Avengers: Endgame Movie Poster

Trivia for Avengers: Endgame

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  • This is the first film in the Marvel Cinematic Universe to be split into two parts.
  • It was announced on October 28th, 2014, that the third Avengers film would take part in the Infinity War storyline of the Marvel comics and would be split into two parts. Part II will be released about one year later than Part I.
  • According to Kevin Feige, the Avengers: Infinity War - Parts 1 & 2 are expected to have a superhero shake up in the Avengers team in the two Infinity War films unlike the prior two Avengers films which particularly consist of the same unit of superheroes.
  • This film marked Chapter Ten of Phase Three in the Marvel Cinematic Universe.
  • This was the twenty-second film to be released by Marvel Studios for the Marvel Cinematic Universe.
  • This will be the second time that an Avengers film is not written and directed by Joss Whedon.
  • Avengers: Endgame (2019) and its predecessor, Avengers: Infinity War (2018), were filmed entirely on digital IMAX cameras, making them the first Hollywood films shot entirely on IMAX cameras, in an exclusive open-matte aspect ratio of 1.9:1.
  • This will be the final film in the Marvel Cinematic Universe. However there will be a Phase 4 and most of the actors are extending their contracts.
  • The film was formerly known as "Avengers: Infinity War, Part II."
  • Evangeline Lilly and Paul Rudd were filming Ant-Man and the Wasp (2018) and this film at the same time.
  • Since his introduction in the Marvel Cinematic universe, Chris Evans has appeared as Steve Rogers/Captain America in one film a year, except for 2015, where he appears twice, totaling eleven times. He has starred in Captain America: The First Avenger (2011), The Avengers (2012), an uncredited cameo in Thor: The Dark World (2013) (though here he plays Loki disguised as Captain America), Captain America: The Winter Soldier (2014), Avengers: Age of Ultron (2015), an uncredited cameo in Ant-Man (2015), Captain America: Civil War (2016), a special cameo in Spider-Man: Homecoming (2017), Avengers: Infinity War (2018), an uncredited cameo in Captain Marvel (2019), and Avengers: Endgame (2019). In October 2018, Evans officially announced via Twitter that he expressed great satisfaction in being involved in the franchise for almost a decade.
  • This will mark Robert Downey Jr.'s tenth and possibly final portrayal of Tony Stark/Iron Man after Iron Man (2008), The Incredible Hulk (2008), Iron Man 2 (2010), The Avengers (2012), Iron Man 3 (2013), Avengers: Age of Ultron (2015), Captain America: Civil War (2016), Spider-Man: Homecoming (2017), and Avengers: Infinity War (2018). He now holds the record as the actor who has portrayed the same comic book character the most times on film, beating Hugh Jackman as Logan/Wolverine and fellow co-star Chris Evans as Steve Rogers/Captain America.
  • According to producer and Marvel Studios president Kevin Feige, this film is the finale of all three phases of the Marvel Cinematic Universe.
  • Reportedly, Marvel Studios has twenty more films planned after this film.
  • Rumored to be titled "Avengers: The Conclusion".
  • This film marked composer Alan Silvestri's fourth time composing a movie in the Marvel Cinematic Universe, with his first three being Captain America: The First Avenger (2011), The Avengers (2012), and Avengers: Infinity War (2018).
  • Was filmed back-to-back with Avengers: Infinity War (2018).
  • The subtitle "Endgame" had been speculated due to the phrase "We're in the Endgame now" by Doctor Strange in Avengers: Infinity War (2018). This theory seemed to be confirmed after someone looked up cinematographer Trent Opaloch's profile and noticed "Avengers: Endgame" in his list of projects; however, that was automatically changed and the Russos denied the title. Later on, the first trailer officially confirmed Endgame to be the title.
  • This will be the first time Vin Disel doesn't play the voice of Groot.
  • As Marvel will not officially own any of the film rights to the Fantastic Four and X-Men characters until 2020 after Disney purchased 20th Century Fox, none of those characters will appear in this second film, as both Infinity War films had been in production way before Fox and Disney's deal.
  • Brie Larson (Captain Marvel/Carol Danvers) and Chris Evans (Captain America/Steve Rogers) had previously starred together in Scott Pilgrim vs. the World (2010) before either of their appearances in the Marvel Cinematic Universe. Larson played the rock star Envy Adams (Scott's (Michael Cera's) ex-girlfriend), and Evans played the action movie star Lucas Lee (one of Ramona's (Mary Elizabeth Winstead's) Seven Evil Exes). In addition, that movie was directed and co-written by Edgar Wright, who wrote the original screenplay for Ant-Man (2015) (a character who also appears in this movie), but dropped out as director for that movie due to his creative clashes with Marvel Studios.
  • During an event for Guardians of the Galaxy Vol. 2 (2017) in April 2017, Zoe Saldana revealed the title of the film as "Avengers: Infinity Gauntlet". Following this, James Gunn announced that was not the title.
  • On September 11, 2017, the production of the movie was temporarily shut down because of Hurricane Irma.
  • This film marks the fourth time where Captain America (Chris Evans) wears his light blue outfit from the first Avengers film. The other times are The Avengers (2012), Thor: The Dark World (2013) and Spider-Man: Homecoming (2017).
  • At 3 hours and 1 minute, Avengers: Endgame (2019) is not only the longest Marvel Studios film, but also the longest superhero film released theatrically.
  • This was the first MCU film to feature both the Hulk and Ant-Man. Paul Rudd previously appeared in I Love You, Man (2009), which also featured the original Hulk, Lou Ferrigno. Ant-Man (2015) also featured a cameo by Garrett Morris, who played Ant-Man on a Saturday Night Live (1975) sketch that also featured John Belushi as the Hulk.
  • Marvel Studios President Kevin Feige credited "All Good Things... (1994)", the series finale episode of Star Trek: The Next Generation (1987), as inspiration for this film.
  • In September 2018, the Russo Brothers posted a picture on social media of the film's set, with the caption "Look Hard." This led many to speculate and believe the title of this film was hidden somewhere inside the photo. (In fact, the film's subtitle, "Endgame," can be made out by the shapes and layout of the objects in the image.)
  • It was confirmed in a leaked story that the title of sequel to Avengers: Infinity War was to be titled Avengers: Annihilation.
  • The first trailer was scheduled for December 5th, 2018 but was delayed due to former US president George Herbert Walker Bush's death. The US government declared December 5th to be a nationwide day of mourning for Bush.
  • Title was announced with the first trailer that was released on December 7th, 2018.
  • It is the first Avengers film in the MCU not to release in the same year as a film in Sony Animation's Hotel Transylvania franchise. The Avengers (2012) released in the same year as Hotel Transylvania (2012). Avengers: Age of Ultron (2015) released in the same year as Hotel Transylvania 2 (2015). And Avengers: Infinity War (2018) released in the same year as Hotel Transylvania 3: Summer Vacation (2018).
  • The first official trailer for the film is the first video in YouTube history to reach over 1 million likes in less than 4 hours. It also received over 289 million views in its first 24 hours, breaking the record previously set by the first trailer for Avengers: Infinity War.
  • Marvel Entertainment titled the first trailer as "Marvel Studios' Avengers - Official Trailer," without the film's title in the name of the video, in order to surprise the fans with the title's reveal at the end of the trailer.
  • The North American release date was moved up a week earlier, from May 3rd to April 26, 2019, after the first trailer and title released on December 7, 2018. There was much speculation that Marvel Studios would do this, as they moved Avengers: Infinity War (2018)'s release up a week as well, in order to reduce the possibility of major plot leaks from countries that released the film earlier.
  • Just like Infinity War, this film's release was pushed one week earlier, placing it on April 26th, 2019.
  • The first trailer holds the record for the highest viewed trailer in history. It received approximately 289 million views in only 24 hours.
  • The first official trailer for the movie broke the record for the most views in 24 hours, reaching 289 million views across all sites the trailer is watchable on (YouTube, Twitter, Instagram, etc.) and topped Avengers: Infinity War (2018)'s trailer record of 230 million in 24 hours.
  • The film title was shown as "Marvel Studios' Avengers: Untitled" at D23 2017.
  • The title "Endgame" was not only heard from a comment from Dr. Strange in Avengers: Infinity War but it was also mentioned in Avengers: Age of Ultron. In that movie, Tony Stark says that the alien invasion from the first Avengers movie is the endgame.
  • The trailer got 289 million views worldwide within the first 24 hours.
  • Release Date Change: The original release date was May 3, 2019. However, following the success of the opening of Avengers: Infinity War in the last full week of April, Marvel opted to replicate that move here.
  • This was the fourth Marvel film directed by brothers Anthony Russo and Joe Russo, following Captain America: The Winter Soldier (2014), Captain America: Civil War (2016), and Avengers: Infinity War (2018). The only actors who have appeared in all four movies are Chris Evans (Captain America), Scarlett Johansson (Black Widow), Sebastian Stan (Winter Soldier) and Anthony Mackie (Falcon).
  • It has been said that Avengers: Endgame will be the most intense and emotional entry in the MCU, even more intense and emotional than Avengers: Infinity War.
  • Rumored to be around 185 minutes long, which will make it the longest Marvel film to date
  • Thanks to some toys released to promote the upcoming movie, we get insights into what characters might show up, some new suit designs that could be seen in the film, and Thanos's new weapon of a double-sided/bladed sword. Nothing has been confirmed, though, since these are just toys.
  • All of the footage used in trailers and TV spots are reportedly from the first 15-20 minutes of the film, according to producer Kevin Feige. With two trailers, several short TV spots, a "special look" ticket sales announcement, and a 181 minute runtime, we have seen up to 4% of the final film so far.
  • The first poster released featured Okoye, but did not include Danai Gurira's name among the rest of the cast members' names at the top of the poster. That poster was quickly recalled and replaced with one that did include her name.
  • When the Russo Brothers tweeted out a photo of the re-shoot cast, Yvette Nicole Brown from Community (2009) was in that photo, making her at least the fourth cast member from "Community" to appear in a Russo Bros. MCU film, following Danny Pudi and D.C. Pierson in Captain America: The Winter Soldier (2014) and Jim Rash in Captain America: Civil War (2016). (Fellow "Community" star Ken Jeong also appears in this film, as does Brie Larson, who guest-starred in a few episodes of the show.) Before their work with Marvel Studios, directors Anthony Russo and Joe Russo were known for their work producing and directing TV comedies, including "Community", where they served as executive producers during the first three seasons. (Elsewhere in the MCU, "Community" star Donald Glover appears in the non-Russo Bros. film Spider-Man: Homecoming (2017), as the criminal Spider-Man tries to interrogate.)
  • Mark Ruffalo announced that he's finished playing the Hulk after the film.
  • Avengers: Endgame (2019) became the biggest pre-sale title ever on Fandango and Atom Tickets sites, causing them to crash minutes after the sales were announced. It accomplished this feat in only six hours. Some theaters across the world had so many sold-out showtimes on the opening weekend that Cinemark, Regal, and AMC theaters chose to add new overnight screenings so that they would be working around the clock to accommodate extra shows.
  • Opening night tickets were resold on eBay for thousands of dollars, with a pair of IMAX tickets in New Jersey selling for $15,000.
  • Even though Captain Marvel (2019) was released one month before this film, Brie Larson shot her scenes for this movie first.
  • As they did with the previous film, the Russo Brothers wrote a letter to fans, asking them not to spoil anything about the movie, as part of a viral campaign on the internet. The hashtags were #DontSpoilTheEndgame and #ThanosDemandsYourSilence.
  • The film was shown in theaters with a Family Guy (1999) episode entitled Lottery Fever.
  • Robert Downey Jr. was the only cast member who was entrusted with the entire film's script.
  • Taika Waititi also appeared in another movie based on Marvel Comic: The Wolverine (2013)/
  • Comic writer Jim Starlin, the creator of Thanos, makes a brief cameo in the film as a member of the support group.
  • Joe Russo (Co-Director) makes a cameo in the meeting of those who lost loved ones with Captain America. He is the one talking about his date and how they both cried during dinner.
  • This film earned $60 million in Thursday night previews, breaking the $57 million record held by Star Wars: Episode VII - The Force Awakens (2015).
  • Not counting her cameo in Captain Marvel (2019) or the recycled footage in Thor: Ragnarok (2017), "Endgame" marks the seventh time that Scarlett Johansson plays the character of Natasha Romanoff/Black Widow in the Marvel Cinematic Universe, following Iron Man 2 (2010), The Avengers (2012), Captain America: The Winter Soldier (2014), Avengers: Age of Ultron (2015), Captain America: Civil War (2016), and Avengers: Infinity War (2018).
  • (Director Cameo) Joe Russo: The co-director of Captain America: The Winter Soldier (2014), Captain America: Civil War (2016), Avengers: Infinity War (2018), and this film appears as Grieving Man in the support group scene. Two other directors of MCU films are also in the cast of this film, reprising named roles from MCU films they directed: Taika Waititi (director of Thor: Ragnarok (2017)) as Korg and Jon Favreau (director of Iron Man (2008) and Iron Man 2 (2010)) as Happy Hogan.
  • At the beginning of the film, Natasha gets a report from Okoye about an earthquake under the Atlantic Ocean. In the Marvel comics, the Atlantic is the home of the underwater kingdom of Atlantis, ruled by the Marvel hero Namor the Sub-Mariner.
  • Michael Douglas and Robert Downey Jr. previously appeared together in Wonder Boys (2000), which also featured previous Spider-Man, Tobey Maguire. Douglas also appeared with Don Cheadle in Traffic (2000) (along with fellow MCU veterans Benicio Del Toro and Miguel Ferrer) and Gwyneth Paltrow in A Perfect Murder (1998).
  • The title "Avengers: Endgame" was foreshadowed in Avengers: Age of Ultron (2015) when Tony Stark discussed the wormhole invasion above New York (from The Avengers (2012)) and says, "...up there, that's the endgame."
  • Scott Lang's storage unit number is 616, which is the same number used for the primary continuity (Earth-616) of the Marvel Comics Universe.
  • During his appearance, Red Skull mutters "Oh, Liebchen" - German for "Oh, darling", but outdated, being very appropriate for this character and his origin.
  • Chris Evans, Benedict Wong, & Hiroyuki Sanada previously co starred in Sunshine (2007), as did Michelle Yeoh who stars in Guardians of the Galaxy Volume 2 (2017).
  • Ken Jeong appears as a security guard reading "Terminal Beach", a collection by J.G. Ballard which includes a story titled "Endgame".
  • In a brief scene where the members of the Avengers are flashed on a holographic screen, the headshot used for Scott Lang was pulled straight from Paul Rudd's IMDB profile photo.
  • After the funeral of Tony Stark, Clint Barton/Hawkeye and Wanda Maximoff/Scarlett Witch share a moment together. She would say,"They both do." She was referring to Natasha Romanoff/Black Widow and Vision (who died in Avengers: Infinity War).
  • In New Asgard, Korg is playing Fortnite (2017), by Epic Games. Iron Man 3 (2013) filmed scenes at the Epic Games headquarters building in Raleigh, NC.
  • The scene where captain America enters the elevator to retrieve the briefcase with the sceptre also mirrors a scene in captain America winter soldier when he gets into an elevator with other hydra agents intent on killing him
  • Jeremy Renner and Elizabeth Olsen also starred together in Wind River (2017).
  • As of April 28, 2019, "Avengers: Endgame" had made $1.2 billion worldwide, becoming one of the biggest box office openings, surpassing Avatar (2009), Star Wars: Episode VII - The Force Awakens (2015), and a handful of others at the same stage.
  • In the early Avengers comics, Clint Barton sheds his Hawkeye identity to become the original Goliath. As Goliath, he used Pym Particles to grow in size. In "Endgame", he is the first Avenger to test the Pym Particles - a nod to his comics history. Bill Foster (featured in Ant-Man and the Wasp (2018)) later became the second Goliath.
  • The actor who plays Thanos ( Josh Brolin ) began his acting career as the eldest of "The Goonies".
  • In the scene where Black Widow coordinates the remaining Avengers, her ballerina shoes can be seen on a chair. This is a nod to Natasha's past in the Red Room where she was trained (Avengers: Age of Ultron (2015)).
  • When we see Hank Pym in his lab in the past, we can clearly see a large, rounded, metal helmet with eye holes and antennae. This helmet resembles the Hank Pym Ant-Man's helmet out of the original Ant-Man comics and Avengers comics.
  • When Tony Stark walks to his daughter's playhouse and taps a rhythm before declaring "Chow time!" this is a nod to the beat of "Let's Go" by the Routers, which was also popularly used in Saturday Night Live's "Dog Show" skit.
  • First live-action film appearance of Spider-Man after the deaths of his co-creators Steve Ditko and Stan Lee, and the second overall, after Spider-Man: Into the Spider-Verse (2018). Ditko died in June 2018 and Lee died in November 2018, both coming after Spider-Man's appearance in Avengers: Infinity War (2018) (April 2018), but prior to the release of "Spider-Man: Into the Spider-Verse" (December 2018).
  • Robert Downey Jr. officially surpassed Hugh Jackman's record for most appearances in film as the same superhero, with ten. He set this record in only 11 years, whereas Jackman did it in 17.
  • In Marvel Comics, there was a period of time where Bruce Banner's consciousness embodied the Hulk's physical body. This however, was achieved through a joint effort of Doctor Strange and Bruce's longtime friend, Dr. Leonard Samson (who was also irradiated by gamma rays). The result, however, was different than what's seen in the film. Instead of a balanced Bruce Banner/Hulk as we see in "Endgame", Samson and Strange managed to merge the three consciousnesses of Hulk (Green), Joe Fixit (Grey), and Bruce Banner so that whenever Bruce was in control, the Hulk's body would surface. But if he lost his temper and the Savage Hulk persona came out, he would transform into the diminutive body of Bruce Banner.
  • Athens, Georgia, brewery Creature Comforts is featured in both the trailer and the movie. Thor is seen drinking an Athena Berliner Weisse and later seen drinking a Tropicalia IPA. Joe Russo was paying homage to his favorite local brewery in Georgia (where the movie was filmed) by featuring their beer in the movie.
  • Odin (Anthony Hopkins) and Phil Coulson (Clark Gregg) do not have a scene in the movie.
  • Thor makes a reference to a video game calling rocket, ratchet ratchet is a reference to ratchet and clank, the video game was about a fox and a robot that saves the galaxy from villians, the fox resembles a raccoon who also talks and is wise cracking, they recently had a movie as well as many video games, thanos does rememble villians in the universe of ratchet and clank, endgame was a title of iron man comic of the original, thanos first appearances was in an iron man comic.
  • Even though Captain America returned the infinity stones to the past, there are now two MCU realities. The reality of the Infinity war movies that exists at the conclusion of Endgame(MCU1) and an alternate branch from 2014(MCU2) . Thanos and his army came to the present(MCU1) and were destroyed, therefore everything Thanos did to collect the stones in the past didn't happen(MCU2). The decimation didn't happen in MCU2. It is possible that the new Spiderman movie takes place in this alternate branch of reality. Everything would be the same with a few exceptions. The Guardians would have still been formed but without Gamora. Ragnarok would have happened, but Thanos wouldn't have killed Loki. All the original Avengers would be alive in MCU2.
  • In the opening scene, Clint Barton calls his daughter "Hawkeye," which is the first time that name is said in the MCU films. The closest previous time was in The Avengers (2012), when Selvig called Barton "the hawk."
  • Natalie Portman's appearance in the film was created with leftover footage from Thor: The Dark World (2013), and she also did voice-over work for a scene when she is talking in the distance. Although Portman didn't shoot any new scenes, she attended the film's premiere.
  • This is the fourth time the MCU movies visit Norway, and the third time visiting the Norwegian city of Tønsberg. Tønsberg appears in Thor (2011), and is the place where the Tessaract is found in the beginning of Captain America: The First Avenger (2011). In Avengers: Age of Ultron (2015), Tony Stark visits Oslo, the capital of Norway. Tønsberg is the oldest city in Norway, dating back to 871, and has roots the Norse era.
  • The time travel theory that the team discusses is more in line with the video game The Journeyman Project (1993) and its sequels, because of the null time pocket, a.k.a. the Quantum Realm.
  • In Avengers: Infinity War (2018), Tony Stark said he swore off dairy before Ben & Jerry's made an ice cream flavor out of him, Stark Raving Hazelnuts. One was made for the Hulk as well, Hunka Hulka Burnin' Fudge. Bruce Banner can be seen in this movie eating his own flavor of Ben & Jerry's while the Avengers are discussing time travel.
  • 22 days after half the universe's population vanished, the remaining Avengers plus Carol discuss how to get to Thanos and undo what happened. Thor is the only one not contributing to the conversation; he's quietly sitting and eating bread and drinking beer. Five years later, he's more openly bitter and depressed, having gained weight due to being a shut-in who eats junk food, doesn't do exercise and drinks beer.
  • Scott only has thin stubble exactly the same as his last appearance in Ant-Man and the Wasp despite being supposedly trapped in Quantum Realm for five years without any tool to shave. It turns out he's only trapped there for five hours.
  • When Tony finds Morgan playing with the helmet of the suit he got for Pepper, he complains that Pepper never wears anything he gets her, forshadows the endingduring the battle against Thanos, pepper wears the suit.
  • In 2012, a handcuffed Loki briefly shapeshifts into Captain America to annoy Thor. Some time later, when present-day Steve is about to walk out of the compound with the Mind Stone in the scepter, his 2012 self sees him and immediately thinks he's a disguised Loki.
  • The cast mentions multiple time travel works while planning the "time heist", including Back to the Future (1985), Star Trek (1966), Bill & Ted's Excellent Adventure (1989), The Terminator (1984), Timecop (1994), "A Wrinkle in Time" (specifically the sequel books, but that's not mentioned), Somewhere in Time (1980), Time Bandits (1981), Hot Tub Time Machine (2010), and Die Hard (1988), only for Scott to remember that last one's not actually a time travel movie.
  • Director Joe Russo's daughters Ava Russo and Lia Mariella Russo portrayed, respectively, Hawkeye's daughter (Lila Barton) and one of Professor Hulk's fan wanting autographs and selfies.
  • "Avengers: Endgame" is the first film to reach over a billion dollars during its opening weekend in theaters.
  • During the Marvel Studios opening sequence, all of the characters that were affected by the events of the halving from Avengers: Infinity War (2018) were removed.
  • The name "Endgame" was foreshadowed in Avengers: Infinity War (2018) by Doctor Strange: "We're in the endgame now."
  • The line "Clint, son of Edith" is a Marvel Comics reference. In the comics, Clint Barton and his brother Barney were the sons of Harold and Edith Barton. The boys loved their mother but hated their father, who was a physically and verbally abusive alcoholic. Harold eventually killed both himself and Edith in a DUI car accident, after which Clint and Barney were sent to an orphanage.
  • The 573 area code shown for Laura Barton's phone number suggests that the Barton family farm is located in central/eastern Missouri, as this is the area code for most of the eastern half of the state outside of the St. Louis metro area. This is confirmed when we see a truck at the Barton farm with a Missouri license plate.
  • In the original Iron Man (2008), the soundtrack used a short excerpt from the classic rock song "Iron Man" by Black Sabbath. In this movie, Iron Man fulfills the line of the song, "when he traveled time, for the future of mankind".
  • Michael Douglas and the Russo Brothers previously worked together on You, Me and Dupree (2006).
  • Another nod to the Back to the Future (1985) franchise is the pair of sunglasses Thor wears upon leaving New Asgard: they are the same '50s style that Marty wears in Back to the Future Part II (1989).
  • Each word in the "Endgame" subtitle is a direct contrast to each word of the "Infinity War" subtitle. 'End' is the antonym of 'infinity,' while 'game,' by definition, would be an opposite to 'war.'
  • Thanos uses his discarded armor as a scarecrow, just like at the end of "The Infinity Gauntlet".
  • Rocket wears a new outfit that is very similar to what he wore in the beloved Guardians of the Galaxy run by Dan Abnett and Andy Lanning.
  • Carol's new look after the time skip is inspired by the comics on two counts. Her short hair has been carried over from her modern design, as has the red sash she wears as a belt. Her new red costume with black shoulder-pads is lifted directly from Captain Mar-Vell's, Carol's predecessor. Additionally, it's subtle, but Carol showing concern for Rhodey and telling him to be safe is a reference to their recent romantic relationship in the comics.
  • Banner managing to join his consciousness to the Hulk's bodies has happened multiple times in the comics, most notably with the "Merged/Professor Hulk" incarnation from Peter David's run.
  • Professor Hulk and Rocket strike up a friendship in this film. This is a nod to Rocket's first Marvel Universe appearance being in an issue of Incredible Hulk.
  • Following the Time Skip, Thor has established a "New Asgard" for the surviving Asgardian refugees in Norway. This is similar to the plot of J. Michael Straczynski's Thor run, which saw Thor rebuilding Asgard in Oklahoma after the events of Ragnarok. Thor having become a drunken, disheveled wreck with long, messy hair was inspired by Jason Aaron's Thor (2014) run. In addition, New Asgard is located in Tønsberg, Norway, a location previously seen in the prologue sequences of both Thor (2011) and Captain America: The First Avenger (2011).
  • The suits that the Avengers used to travel through the Quantum Realm are similar in design and color-scheme to the space suits worn by the Avengers from The Avengers: Earth's Mightiest Heroes (2010).
  • Iron Man's Mark 85 armor resembles a somewhat modernized but otherwise completely accurate recreation of his classic Mark 2 Armor (the first red and gold one) in the comics, while Cap's new suit finally incorporates the classic chainmail design of his comics outfit. The Mark 85 armor also has a built-in energy shield that resembles the one Iron Man has in the Marvel vs. Capcom video games.
  • Barton being the first person after Scott to enter the Quantum Realm via shrinking is a nod to his time as the size-changing Goliath.
  • The very premise of the Avengers splitting up into several smaller groups to travel across time and space, seems to have been inspired by Kurt Busiek's "Avengers Forever". The official sampler that Marvel released for new readers who might be interested in getting into comics after seeing "Endgame" even listed "Avengers Forever" alongside other stories that were relevant to the movie, like the original "The Infinity Gauntlet" mini-series.
  • Tony Stark partnering up with Scott Lang during a time-travel incident is a reference to the fact that Scott Lang spent a significant part of his publication history as an Iron Man supporting character and sidekick to Iron Man in the comics.
  • The scene with the Compound collapsing on multiple heroes with Professor Hulk struggling to hold it up is a nod to a similar scene in the "Secret Wars" comics.
  • Thanos being Iron Man's antithesis and personal archenemy for the MCU lies on Thanos's original appearance as an Iron Man villain back in 1973.
  • The team breaks into smaller teams to recover the Infinity Stones through time and space, much like various Marvel teams are deployed to take down the Worthy and their hammers all around the globe in the "Fear Itself" comic storyline.
  • Shot back-to-back with Avengers: Infinity War (2018) over a period of 200 days.
  • Robert Downey Jr. once told Anthony Russo and Joe Russo about how one of his children said "I love you 3000" to him. The directors liked the phrase so much that they decided to include it in the film.
  • Rhodey mentions Star Trek in his list of films about time travel. The Marvel Cinematic Universe has featured several actors from the Star Trek franchise: Damion Poitier, Miguel Ferrer, Chris Hemsworth, Alice Krige, Karl Urban, Benedict Cumberbatch, Idris Elba, and Zoe Saldana.
  • The number 3000 is also a call back to Iron Man 3 (2013): the Mandarin's bombs explode at 3000 degrees.
  • According to criticisms during the first 1970s comic book conventions (a.k.a. comic cons), Thanos, created by Marvel Comics' Jim Starlin in February 1973, appears to be Marvel's copy of Darkseid of Planet Apokolips, created in November 1970 by DC Comics' Jack Kirby.
  • The idea of showing the autographs for the original The Avengers (2012) actors in the end credits came from Star Trek VI: The Undiscovered Country (1991), which was also a finale for its cast.
  • Brie Larson as Carol Danvers/Captain Marvel has less than ten minutes of screen time.
  • Half of the instruments used in the opening title card to Avengers: Infinity War (2018) are not present during the "Endgame" title card.
  • This is the first (and, given his announced "semi-retirement", presumably the only) film where Robert Redford has returned to play a role for a second time. In his 59-year career, Redford has otherwise never played the same role twice in a franchise.
  • "I love you 3,000" is something that Robert Downey, Jr. said his children said to him.
  • Although he is seen during the time heist sequence, Michael Douglas's character does not himself travel through time, although his invention of Pym Particles is what allows it to happen. Douglas has never traveled through time on film, although he acted as a catalyst for another time travel film. He both appeared in and produced Romancing the Stone, which means he also hired the director, Robert Zemeckis. It turned out to be Zemeckis's first successful feature, which allowed to make his own time travel film, Back to the Future.
  • When "Endgame" passed Titanic (1997)'s box office total, James Cameron sent a congratulatory message to Kevin Feige and Marvel on dethroning his film.
  • During the Steve Rogers support group scene, the bald man with glasses and goatee is none other than Jim Starlin, the comics writer and artist who created Thanos.
  • Thanos's Gauntlet bears a striking resemblance to the relic of the hand of St. Teresa de Jesus, one of the most important holy relics in Spain.
  • The arc reactor that says "Proof that Tony Stark has a heart" is the gift Pepper made for Tony in Iron Man (2008) after she removed his old reactor.
  • When Tony calls Rocket a Build-A-Bear, Rocket says, "Maybe I am." Rocket is a raccoon-like mammal that was torn apart and rebuilt...in essence a mad scientist's version of a Build-A-Bear.
  • Whether intentionally or unintentionally, the title "Avengers: Endgame" was first foreshadowed back in [title=tt2395427] when Tony Stark discussed the wormhole invasion above New York (from The Avengers (2012)) and says, "...up there, that's the endgame."
  • Karen Gillan appears in the scene where the characters discuss all the films that have involved time travel. She later said she wished she had thought of making a reference to Doctor Who (2005), on which she had appeared. The "Time Heist" premise is the title of a "Doctor Who" episode, and Bill & Ted travel around in a phone booth, similar to the Doctor's TARDIS.
  • Mark Ruffalo and Scarlett Johansson share a birthday, November 22. That date is also connected to several time travel films: 11.22.63 (2016) involves traveling back in time to prevent the JFK assassination, while the films Back to the Future Part II (1989) and Star Trek: First Contact (1996) were released that day, and it was also the day that Doctor Who (2005) premiered, a show that later would feature Karen Gillan.
  • Scott Lang as an old man is played by Lee Moore. This was his last film, and he died before it was released.
  • James Cameron director of previously 2 of the highest grossing films of all time titanic and avatar congratulates avengers endgame for surpassing titanic at the global box office he quoted "avengers endgame sinks titanic"
  • Korg ('Taika Waititi') is seen wearing the same Hawaiian print shirt that 'Taika Waititi' wore at San Diego Comic Con while promoting _Thor: Ragnarok_.
  • Tilda Swinton had previously collaborated with writers Christopher Markus and Stephen McFeely in the Chronicles of Narnia films - one of those films also featured Peter Dinklage, who also appeared in Avengers: Infinity War (2018) (also written by Markus and McFreely).
  • Brie Larson who plays Captain Marvel/Carol Denvers & Tom Hiddlestone who plays Loki who start in Avengers: Endgame (2019) have previously worked together in Kong: Skull Island (2017).

Spoilers

  • "Endgame" was Robert Downey Jr.'s last contractual obligation to play Tony Stark/Iron Man for Marvel Studios. Downey has stated he plans on being involved with the Marvel Cinematic Universe longer than his current contractual commitments are structured, so many are led to believe he will sign a new deal after his current one has concluded.
  • On October 28th 2014, Kevin Feige confirmed that the only Avenger to appear in both parts 1 and 2 would be Mark Ruffalo as The Hulk.
  • The film will conclude the recurring Thanos and Infinity Stones story arc in the Marvel Cinematic Universe.
  • According to the Russo Brothers, the title of this film will not be announced anytime soon because it would be a spoiler for Avengers: Infinity War (2018).
  • Filming officially began on August 10, 2017. It was shot after a three- to five-week break once Avengers: Infinity War (2018), which started filming on January 23, 2017, wrapped.
  • Clint Barton appears in Japan with the identity of Ronin in this film. This is based on the comics, where, in the aftermath of the "Civil War" event, he took up the Ronin identity during a mission to Japan with the New Avengers to save Echo (Maya Lopez), who had been the previous Ronin. Barton has a tattoo of a ronin on his arm, as a further homage.
  • Set photos leaked showing Robert Downey Jr., Chris Evans, Chris Hemsworth and Tom Hiddleston wearing outfits and costumes from the first Avengers film, as well as the rubble-filled New York set where the final battle of The Avengers (2012) is set. This led many to believe that either a flashback sequence or time travel would play a major role in this film. The fact that Ant-Man was seen among these characters created speculation that he would be the one to travel back in time by means of the Quantum Realm; this theory seemed all the more likely after the mid-credits scene of Ant-Man and the Wasp (2018), where he becomes trapped in the Quantum Realm after receiving the warning to avoid the time vortex. This hypothesis was indeed confirmed to be the case as the Avengers build their own quantum tunnel designed for time travel so that they can retrieve the Infinity stones from the past after Thanos destroyed them in the present.
  • Robert Downey Jr. was spotted wearing a uniform on set bearing the logo of SHIELD, possibly implying the return of the organisation after their fall in Captain America: The Winter Soldier.
  • The name of this movie has not been released because it is likely that the title is a spoiler to the current upcoming Avengers Infinity War. The title is believed to be released at the end of the movie coming April 27.
  • Bucky Barnes, Scarlet Witch, Groot, Star Lord, Drax, Mantis, Black Panther, Doctor Strange, Falcon, Nick Fury, Maria Hill, and Spider-Man all died at the end of Infinity War when Thanos snapped his fingers. Loki, Heimdall, Gamora, and Vision are all confirmed deaths from before Thanos snapped his fingers. It was said by Marvel studios and the Russo brothers that when it came to marketing and trailers for this film, they weren't going to take precautions in trying to hide certain characters who will be resurrected, they will be revealed to be alive but will bring up the question on how they were resurrected for the audience to ponder.
  • Aaron Taylor-Johnson's character, Quicksilver/Pietro Maximoff, was seen in set pics of this film, hinting that he might return or just briefly make an appearance in a flashback scene of Avengers: Age of Ultron (2015). In the final cut of the movie, he is missing.
  • Despite speculation and rumors, the Netflix Marvel characters like Daredevil, Jessica Jones, Luke Cage, Iron Fist, Elektra, and The Punisher do not make an appearance in this film.
  • The film features Drax, both Wasps, Hank Pym, Spider-Man and others who were dusted in the snap.
  • Pepper Potts suits up in her own Iron Man suit (which she briefly did before in Iron Man 3 (2013)), which had the name Rescue in the comic books. In the movie, she doesn't take on a codename.
  • It is rumored that Bruce Banner and the Hulk will merge into one identity that dubs itself the Professor. This is based on the Merged Hulk (Banner and Hulk merged into one body), and is named after the Maestro (another merged form - "maestro" is Italian for "professor", however the Maestro was a villain in the comics, while the Professor is still heroic).
  • The somber ending to Avengers: Infinity War (2018) was going to be this film's beginning; had that been the case, "Infinity War" would have ended with Thanos completing the Infinity Gauntlet, before actually using it in this movie. However, the creative teams working on the two films decided that it best suited the story to have the actual cliffhanger follow the finger snap itself and to show its fallout before, making viewers wait a year to see how the story would be resolved.
  • Evangeline Lilly had said this film heavily reminded her of her career playing Kate Austen on Lost (2004), especially the show's fourth season, which employs "flashforwards" as a central plot device.
  • This movie's storyline is the ultimate payoff to Tony Stark's statement in The Avengers (2012) where he tells Loki "If we can't protect the Earth then you can be damn well sure we'll avenge it". In Avengers: Infinity War (2018), they failed to save the universe, which is why they'll be avenging it in this movie.
  • With this film, along with Captain America: Civil War (2016), Spider-Man: Homecoming (2017), and Avengers: Infinity War (2018), Tom Holland breaks Tobey Maguire's record for playing Spider-Man in live-action movies the most times.
  • Many theories state that Doctor Strange made an illusion to make many believe he is dead after the devastating snap of Thanos, but he is somehow still alive.
  • It is the third Avengers movie to be released in the same year as a Quentin Tarantino movie: The Avengers (2012) and Django Unchained (2012) were both released in 2012, Avengers: Age of Ultron (2015) and The Hateful Eight (2015) were both released in 2015, and "Avengers: Endgame" and Once Upon a Time in... Hollywood (2019) are both being released in 2019. Actor Samuel L. Jackson had a role in at least the first five of these six films (although rumors have circulated that he will also have an appearance in "Once Upon a Time in Hollywood"), being a frequent Tarantino collaborator and playing Nick Fury in the MCU.
  • Toward the end of the second official trailer, the Avengers are all wearing identical white suits as they stride off to supposedly save the day. These suits bear somewhat a resemblance to the Quantum suit worn by Hank Pym in Ant-Man and the Wasp (2018), which further adds on to the theory that the Avengers will use the Quantum Realm to reverse Thanos's actions in the previous movie. Tom Holland had already spoiled by accident in an interview that the Quantum Realm will play a major role in this movie.
  • For the first time in the MCU since The Incredible Hulk (2008), there is no mid- or post-credit scene. The final Marvel logo, however, is paired with the sound of Tony Stark hammering metal in the cave from Iron Man.
  • Despite rampant rumors that it may happen, due to Fox being acquired by Disney, no non-MCU characters appear in the film (X-Men, Deadpool, Fantastic Four, etc.). There is also no indication as to how these characters may be incorporated in the future.
  • Akihiko, the Japanese gangster killed by Clint Barton (Jeremy Renner), is played by Hiroyuki Sanada, who also played Shingen Yashida in The Wolverine (2013). He had previously played a leading role next to Chris Evans in Sunshine (2007).
  • Steve Rogers dupes the Hydra agents into believing he's an undercover Hydra agent himself. This comes from the "Secret Empire" comic storyline, where Rogers is revealed to have been a member of Hydra. (It was later revealed to have been an alternate version of Steve Rogers whose history had been rewritten by the personified Cosmic Cube, Kobik.)
  • Captain America wielding Thor's hammer, Mjolnir, comes from the comics, where Steve Rogers has proven himself worthy by the enchantment cast on the hammer. This also marks the second film where Steve Rogers makes an attempt to wield Mjolnir. The first was in Avengers: Age of Ultron (2015), though in that film he was only able to move the hammer slightly off the table. That subtle movement was noticed by Thor. Director Joss Whedon hinted in an interview that Rogers had been able to lift the hammer the whole time, but didn't, so as to not hurt his friend Thor's feelings.
  • Steve Rogers ends up in an aged form by the end of the film and hands the shield and the Captain America title over to Sam Wilson. This came from the comics, when Steve Rogers was temporarily turned into an old man by having the Super-Soldier serum drained from his body, forcing Sam to become Captain America during the 2014 comic book storyline, "The Tomorrow Soldier". For this film, while he has the serum, it didn't stop his aging. So when he takes the long way back to the present after one-way time-travelling to the '40s, even though he's a very fit 105 years-old, it shows.
  • Steve Rogers's line, "Hail Hydra", is a reference to the 2016 comic book Captain America: Steve Rogers #1. The comic book ended in a massive cliffhanger, with Steve Rogers apparently revealing his allegiance to Hydra, which caused an outrage among fans.
  • Edwin Jarvis, played by James D'Arcy, becomes the first character in the MCU to be introduced in a Marvel TV series and make an appearance in a movie. The character was first introduced in Now Is Not the End (2015) and was a regular cast member on Agent Carter (2015). This also marks the first time the original Jarvis is seen in a film, as he had been replaced by the computer program J.A.R.V.I.S. (voiced by Paul Bettany) in previous films.
  • First appearances of Korg, Meek, and Valkyrie since Thor: Ragnarok (2017), all of them having survived both the attack on their ship by Thanos, and the dusting.
  • Steve Rogers becomes the fifth person in the MCU to wield Mjolnir, after Odin, Vision, Hela, and of course, Thor.
  • During the end credits, when the main cast names are shown, their names are shown alongside their signatures, along with a picture of their character. This is very similar to the end credits to Star Trek VI: The Undiscovered Country (1991), where the actors' signatures appear on screen. That film was also a final outing for the original crew, much like "Avengers: Endgame".
  • When mentioning movies with time travel in them, they mention the comedy movie Hot Tub Time Machine (2010). Sebastian Stan (Bucky Barnes) plays a bully in that movie.
  • "New Asgard" is actually a village in the southern borders region of Scotland, called St Abbs. Thor can be seen drinking Innis and Gunn, a beer brewed in Scotland. Other hints to Scotland in this scene are the bottle of Irn Bru on the windowsill, and the golf club behind Thor's head. (In the comics, after its Ragnarok destruction, Asgard was rebuilt on Earth, outside of Broxton, Oklahoma.)
  • When Scott Lang is proposing the idea of time travel to Tony Stark, he uses the phrase "time heist". "Time Heist" is the title of an episode in the eighth season of Doctor Who (2005), a show about time travel. Karen Gillan, who plays Nebula in this movie, played a major character, Amy Pond, in several seasons of "Doctor Who".
  • When Natasha, Steve, and Scott go to visit Tony to convince him of the time travel plan, Natasha is seen wearing a necklace with an arrow on it. This is a nod to her friendship with Hawkeye, who is still rogue at this point in the film.
  • The two beers Thor is drinking after getting picked up are called Athena (yellow and white can) and Tropicalia (orange and blue can), which are brewed by Creature Comforts in Athens, GA. When this was filmed, the brewery would have only been distributing in Athens and Atlanta, with Atlanta being one of the primary filming locations. The Russo Brothers are big fans of Creature Comforts and have been seen wearing the brewery's shirts at events and panels, such as D23 Expo.
  • The movie cast contains 8 Academy Award winners: Brie Larson, Gwyneth Paltrow, Michael Douglas, William Hurt, Natalie Portman, Robert Redford, Marisa Tomei, and Tilda Swinton.
  • At one point, Tony Stark calls a more "casual" version of Thor "Lebowski". In the first Iron Man (2008) movie, the character of Obadiah Stane, who is Tony Stark/Iron Man's mentor/friend/nemesis, was played by Jeff Bridges, who is very well-known for playing Jeff "The Dude" Lebowski, the main character of the movie The Big Lebowski (1998).
  • In the funeral scene, Morgan asks for a cheeseburger and Happy smirks and says that her father loved cheeseburgers. This is a reference to Tony Stark requesting "an American cheeseburger" upon arrival at the press conference, after escaping from the cave in Iron Man (2008).
  • At the end of the film, while on the Guardians' ship, the Guardians and Thor are discussing different ways for Thor and Quill to determine who's the captain of the ship. When it's Groot's turn to speak, he says "I am Groot" in a sarcastic way. The camera then cuts to Thor and Quill, who exchange a glance and a laugh, implying that Groot suggested a "measuring contest" to determine the captain.
  • At Tony Stark's funeral, a teenage boy is seen standing behind Scarlet Witch and Bucky. This is Harley Keener (Ty Simpkins), the boy from Iron Man 3 (2013) who let Tony use his shed when he needed to repair his Iron Man suit.
  • One of the shapes that Tony Stark tries when he is running simulations of his time travel 'GPS' - and eventually, the successful one - is a Möbius strip. This is a object that it loops back on itself. This is a bit of foreshadowing of his death at the end of the movie, since this part of the MCU began with Iron Man (2008), and it ends with his sacrifice.
  • In a lighthearted scene toward the end of the film, Thor joins Star-Lord and the rest of the Guardians of the Galaxy and calls the team the "Asgardians of the Galaxy". Thor: Ragnarok (2017) was frequently and humorously referred to as "Asgardians of the Galaxy", due to the film's tonal similarities with Guardians of the Galaxy (2014). A Marvel comic titled "Asgardians of the Galaxy" debuted in September 2018, featuring a team of Asgard-related characters including Angela, Valkyrie, Kevin Masterson, Throg, Skurge, and the Destroyer.
  • The mid-credits scene from Captain Marvel (2019), believed to be taken from this film, does not appear in the final cut.
  • In the final battle, Thanos breaks Captain America's shield in half, fulfilling the prophecy in Avengers: Age of Ultron (2015). Also shown in the vision is Hulk injured and unable to fight, similar to Avengers: Infinity War (2018), Black Widow dead in the same position as she dies in "Endgame", and Thor appearing to be dead in the same position as when Thanos wounds him with Stormbreaker in the final battle.
  • Morgan Stark, the daughter of Tony Stark and Pepper Potts, was based off the character Howard Stark III, who was their son from an alternate reality in the comics (from Invincible Iron Man #500 that was published in 2011). This is also the fourth film to have a character portrayed as the opposite gender from their comic book counterpart, which was preceded by the Ancient One from Doctor Strange (2016), Ghost from Ant-Man and the Wasp (2018), and Mar-Vell from Captain Marvel (2019).
  • Tony Stark kicks off the Marvel Cinematic Universe and Infinity Saga with the phrase "I am Iron Man". At the end of the climactic battle, Tony's last words are "I am Iron Man", bringing the Infinity Saga to a close.
  • When Sam Wilson/Falcon calls for Steve Rogers/Captain America on the radio, he says "on your left". This exact phrase was said by Captain America, to Falcon, in the beginning of Captain America: The Winter Soldier (2014).
  • The cast includes 19 Academy Award nominees (for acting and non-acting categories): Angela Bassett, Josh Brolin, Don Cheadle, Bradley Cooper, Benedict Cumberbatch, Michael Douglas, Robert Downey Jr., William Hurt, Samuel L. Jackson, Brie Larson, Gwyneth Paltrow, Michelle Pfeiffer, Natalie Portman, Robert Redford, Jeremy Renner, Mark Ruffalo, Tilda Swinton, and Taika Waititi. Of those nominated, Douglas, Hurt, Larson, Paltrow, Portman, Redford, and Swinton have all won at least one Academy Award. Douglas has two Academy Awards, one for Best Picture for One Flew Over the Cuckoo's Nest (1975) and one for Best Actor for Wall Street (1987).
  • Similar to what was done with Samuel L. Jackson and Clark Gregg in Captain Marvel (2019), digital de-aging was also applied in this film to make Stan Lee look younger for his cameo appearance, which would take place in 1970. Digital de-aging was also applied to Michael Douglas (Hank Pym) for his 1970 appearance, and has been used in several Marvel Studios films to create noticeably younger versions of characters for certain scenes (such as Robert Downey Jr.'s Tony Stark in Captain America: Civil War (2016), Douglas's Pym in Ant-Man (2015) and Ant-Man and the Wasp (2018), and Michelle Pfeiffer's Janet Van Dyne in Ant-Man and the Wasp (2018)).
  • During the planning scene, Hulk/Bruce Banner can be seen eating his own Ben & Jerry's ice cream flavor, Hulka Hulka Burnin' Fudge. This ice cream flavor was mentioned in passing in Avengers: Infinity War (2018).
  • This is the fourth film in the Marvel Cinematic Universe to feature a cameo from an actor on the NBC show Community (2009). "Avengers: Endgame" continues this tradition with Yvette Nicole Brown (Shirley Bennett on "Community") playing a S.H.I.E.L.D. agent from 1970 and Ken Jeong (Ben Chang on "Community") playing the security guard that releases Scott Lang from the storage facility in San Francisco. Ken Jeong playing a security guard may also be a reference to his character's job at Greendale College in "Community" Season 3.
  • In the climactic battle before Tony takes the Infinity Stones into his gauntlet to snap, he looks to Doctor Strange, who holds up one finger. This is an acknowledgment to Tony from their previous conversation before the battle that this is the timeline in which they win.
  • New Asgard, originally the Norwegian city Tønsberg, was also the site of the battle between Asgard and the frost giants of Jotunheim shown in Thor (2011), along with the location that Red Skull stole the Tesseract from in Captain America: The First Avenger (2011).
  • The iconic comic book line "Avengers Assemble!" is finally said on screen by Captain America prior to the final battle. This was teased at the end of Avengers: Age of Ultron (2015), but the film cuts to the credits before the line is fully spoken.
  • Jon Favreau, director of Iron Man (2008) and the person who started the MCU, is seen at Tony's funeral talking to Morgan. (Favreau plays the recurring role of Tony Stark's driver/bodyguard, Happy Hogan.)
  • During the movie, Back to the Future (1985) is mentioned a few times. Alan Silvestri, the composer, scored both this movie and "Back to the Future", among many others.
  • Brie Larson (Carol Danvers/Captain Marvel), Tom Hiddleston (Loki), and Samuel L. Jackson (Nick Fury) previously starred together in Kong: Skull Island (2017), along with fellow MCU veterans John C. Reilly (Rhomann Dey in Guardians of the Galaxy (2014)) and Shea Whigham (Roger Dooley on Agent Carter (2015)).
  • The only character not to make an apperance is Paul Bettany as Vision, however Bettany does voice 1970 Jarvis.
  • In the beginning of the film, Tony Stark and Nebula have been lost in space for 22 days, a nod to "Avengers: Endgame" being the 22nd film of the Marvel Cinematic Universe.
  • The song Steve Rogers and Peggy Carter dance to is the same song that Nick Fury is listening to in Steve Rogers's apartment after he is attacked in Captain America: The Winter Soldier (2014).
  • When Steve Rogers is in Hank Pym's lab looking for Pym Particles, you can see a helmet for the Ant-Man suit identical to the original comic design.
  • The comics have recently ret-conned Captain America to have been working with Hydra since World War II. This film pays homage to that by having him know, and pretend to be a part, of Hydra's takeover of S.H.I.E.L.D.
  • Besides Thor, on the poster the three characters who are the largest in size end up being the three characters whose stories end.
  • (Cameo) Matthew Berry: ESPN's fantasy football expert portrays one of the S.H.I.E.L.D. agents alongside Alexander Pierce (Robert Redford) during the confrontation with Tony Stark in the New York scene.
  • The end of the movie pays homage to the graphic novel "House of M", where the reader gets to see how heroes would have lived out their own opinion of their ideal life. It shows that Steve Rogers wishes he had never been frozen or famous, just returned to Brooklyn after the war to grow old in anonymity. This is exactly what Steve does when he goes back in time and rekindles his life with Peggy.
  • In the 3D version of the film, the funeral scene is presented in 2D, unlike all the rest of the scenes.
  • When Captain America is going to the Quantum Realm to return the Infinity Stones, he asks Bucky not to do anything stupid. Bucky replies by saying, "How can I? You are taking all the stupid with you." This is the exact dialogue between the characters from Captain America: The First Avenger (2011). The only change is that, in that movie, Bucky is going to war and asks Steve not to do anything stupid. Steve gives the same reply.
  • When Sam/Falcon's voice appears during the final battle, he says, "Hey Cap, this is Sam, to your left." This is a reference to the Captain America: The Winter Soldier (2014) beginning, where Steve runs multiple laps and whenever he overtakes Sam, he says, "On your left."
  • Korg, a character voiced by Thor: Ragnarok (2017) director Taika Waititi, is seen wearing a pineapple shirt matching the pineapple romper that Taika wore for much of the promo images and interviews for "Thor: Ragnarok".
  • The first Marvel film to not have a post-credits scene. Many theater goers would stay behind in anticipation of the continued tradition, but instead there is a blank screen and a brief clanging sound. The sound heard is Tony Stark's hammer from the first film (Iron Man (2008)). This is an indicator from Marvel that the events are final and marks the official end of the decade-long Infinity Saga.
  • When the Avengers are arguing the Time Heist plan, the movie Back to the Future (1985) is referenced repeatedly. When Hawkeye does his first trip through time, he arrives in a barn, just like Marty McFly did in "Back to the Future".
  • When Thanos attacks the Avengers HQ and the entire building collapses, the Hulk holds up the rubble, saving War Machine and Rocket Raccoon until Ant-Man comes to the rescue. This is a reference to the comic book miniseries "Secret Wars", in which the Beyonder takes a number of villains and heroes from Earth and puts them on a planet to fight each other. During one of the early battles, Molecule Man drops a 150-billion-ton mountain on the heroes and the Hulk is able to hold up the entire mountain by himself until they figure out how to get out.
  • When Tony arrives at Avengers headquarters to discuss the time travel plan he drives up in an Infinity.
  • Captain America ends this film by dancing with Peggy Carter, keeping the promise he makes right before he puts the Hydra plane into the ocean in Captain America: The First Avenger (2011).
  • Captain Marvel's short haircut is a nod to the character's appearance in the comics.
  • When all the heroes are shown coming back through Doctor Strange's portals, the Wasp is seen coming back. To the right of her, you can see Howard the Duck walking amongst the army.
  • Robert Redford reprises his Captain America: The Winter Soldier (2014) role of Alexander Pierce. Prior to this film, he announced he was retiring from acting; therefore this film is intended to be his final film appearance.
  • In the final battle when all the MCU heroes show up, Ant-Man emerges as Giant-Man and carries the Hulk in his palm. This was a reference to the Super Bowl Coke commercial from 2016, when the two were reversed in size. In the ad, Ant-Man stole a mini Coke can from the Hulk, then had to help him open it.
  • When Tony says "I love you tons," his daughter Morgan says "I love you 3000." One ton equals 2000 pounds, so by this measure she could be saying that she loves him more.
  • The line that Peter Parker said to Tony Stark when Peter was dying in Avengers: Infinity War (2018) is the same as the line he says to Tony Stark when Tony is dying after snapping his fingers in "Endgame". Before Peter turned to dust, his last words to Tony were "I'm sorry". When Tony is dying from the Stones' radiation, Peter's last words to him are also "I'm sorry".
  • During the "Five Years Later" sequence, there is a shot of Citi Field, the stadium of the New York Mets baseball team. Later, the grieving man in Captain America's support group says he misses the Mets. The movie references the Mets because the team did promotional tie-ins with Marvel based on pitcher Noah Syndergaard, who was nicknamed "Thor" for his resemblance to the character. The Mets had done giveaway days of such items as Syndergaard Thor bobblehead dolls and T-shirts.
  • During the first meeting between the Avengers and Captain Marvel in the Avengers' headquarters, holograms are shown of those decimated by Thanos: Jane Foster, Erik Selvig, Shuri, T'Challa, Sam Wilson, Stephen Strange, Peter Quill, Groot, Drax, Mantis, Hank Pym, Janet Van Dyne, Hope Van Dyne, Bucky Barnes, Peter Parker, Wanda Maximoff, Maria Hill, Sharon Carter, and Nick Fury.
  • In Captain America: Civil War (2016), when Hawkeye and Black Panther first meet and fight, Clint pauses and says, "We haven't met yet. I'm Clint," to which T'Challa replies, "I don't care." That is the first and only time they meet before T'Challa disappears at the end of Avengers: Infinity War (2018). The next time they meet is in this movie, during the final battle scene. When Ronin/Clint surfaces with the new Gauntlet, T'Challa comes to his aid and finally calls him by his name, indicating the evolution of their relationship from adversaries to allies.
  • During the climactic battle when Peter Parker (Spider-Man) returns, Tony Stark gives him a hug, to which Peter responds "this feels good". This is a throwback reference to Avengers Infinity War when Peter said "I don't feel so good" as he died in Tony's arms.
  • In The Avengers (2012), Captain America tells Iron Man, "You're not the guy to make the sacrifice play," and Iron Man tells Captain America, "Everything special about you came out of a bottle." In this movie, each proves the other wrong. Iron Man sacrifices himself to defeat Thanos, while Captain America proves himself worthy by being able to wield Thor's hammer, Mjolnir.
  • During the final battle, there is a scene showcasing only the female MCU heroes. This is a reference to the A-Force, a team of all-female Avengers which appeared in Marvel Comics from 2015 to 2016. Some of the characters from the A-Force comics are featured in the scene, including Captain Marvel, Rescue (Pepper Potts), and Scarlet Witch.
  • In the scene in New Asgard based in Scotland, on the table next to Thor are a bottle of Irn Bru and the Scottish "delicacy" the deep-fried Mars Bar, which also features on an advert in Avengers: Infinity War (2018).
  • Howard the Duck, who appears in Guardians of the Galaxy (2014) and Guardians of the Galaxy Vol. 2 (2017), makes his third cameo (a brief one, though) in the MCU, arriving at the final battle with Doctor Strange's reinforcements. (It is unclear whether he had been a victim of Thanos's snap at the end of Avengers: Infinity War (2018).)
  • When the Avengers attack Thanos at his home, Thor immediately chops off Thanos's hand which wears the Infinity Gauntlet. This is a reference to the online videos "How It Should Have Ended," a series of animated comedy shorts which offers alternate endings to popular films. The episode for Avengers: Infinity War (2018) suggested this same idea to defeat Thanos.
  • During the final battle, the Wasp fixes Ant-Man with a challenging stare after she responds to Captain America's orders. This is a callback to Ant-Man and the Wasp (2018), where Hope admits she was angry with Scott for not asking her to help during the events of Captain America: Civil War (2016). Also, she calls him Cap instead of the full "Captain America". In Ant-Man and the Wasp (2018), she had made fun of Scott for doing the same. Back then, he had replied that it's what Cap's friends call him.
  • Right after the Time Skip, Natasha all but says to Steve that she's been married to the job for the past five years because she has nothing else in her life. This foreshadows what happens to her on Vormir with Clint.
  • Steve tells his support group that they need to move on after the Snap, and make something of what they have left. Otherwise, Thanos might as well have killed all of them. When the Avengers demonstrate their complete inability to do just that, Thanos comes to this exact conclusion, changing his plans from "50%" to "100%".
  • In his recorded will to Pepper, Tony cheekily compares Nebula to a "Blue Meanie" from The Beatles' animated movie, Yellow Submarine (1968). In the French version, he calls her the "Smurfette", instead. He also snarkily calls Thor (after five years of letting himself go and drinking like crazy) "Lebowski" and refers to Rocket as "Ratchet".
  • Joss Whedon has stated that in Avengers: Age of Ultron (2015), Captain America could lift Mjolnir, but didn't do it because he didn't want to hurt his friend Thor's feelings.
  • The security guard at the storage facility where Scott Lang returns from the Quantum Realm is seen reading a book named "Terminal Beach", by J.G. Ballard. It was published in 1964 as a compilation of twelve sci-fi short-tales: "Terminal Beach" (hence the name), "A Question of Re-entry", "The Drowned Giant", "The Illuminated Man", "The Reptile Enclosure", "The Delta at Sunset", "Deep End", "The Volcano Dances", "Billennium", "The Gioconda of the Twilight Noon", "The Lost Leonardo", and finally "End-Game".
  • Black Widow sports a new hairstyle after five years: red roots with blonde tips. After the events of the Captain America: Civil War (2016), she dyed her natural red hair blonde to avoid being recognized. Red roots with blonde tips tell us she deemed it unnecessary to keep dying her hair blonde after the events of Avengers: Infinity War (2018), but also didn't dye her blonde hair back to red because she was too busy trying to do her best as the de facto director of the Avengers.
  • When Tony and Cap infiltrate the S.H.I.E.L.D. base, Cap wears an Army uniform with - quite appropriately - captain's bars on his hat.
  • In Spider-Man: Homecoming (2017), Peter mistakes Tony's reaching for the car door as an attempt to hug him. When Peter returns the gesture with a hug, Tony responds, "That's not a hug; I'm just grabbing the door for you. We're not, we're not there yet." In "Endgame" (2019), when Peter and Tony are reunited, Tony immediately pulls him in for a hug.
  • When Captain America goes back in time to return the infinity stones, he and Bucky reverse the same conversation exchange they had in Captain America: the First Avenger (2011) when Bucky was first going off to fight in WWII.
  • At the end of the climactic battle with Thanos, Rhodes is the first one to find Tony dying from his injuries. This pays tribute to Rhodes being the first one to find Tony in the desert and the beginning of him being Iron man. Rhodes is also the first one to find him at the end of him being Iron Man. Also, it reverses Tony being the first to find the severely injured Rhodey after the airport battle in Civil War.
  • Josh Brolin and Elizabeth Olsen worked together in Oldboy (2013). When their characters meet in "Endgame", Thanos tells Scarlet Witch he doesn't know who she is and she replies that he will, which is similar to the unknown familial relationship of their "Oldboy" characters when they meet, and its eventual significant reveal.
  • Between this movie and Avengers: Infinity War (2018), there have been four snaps with the completed Infinity Gauntlet: the first one done by Thanos to wipe out half the universe, the second also done by Thanos to erase the stones from existence, the third by Hulk to undo the first snap, and the fourth by Tony Stark to eliminate Thanos and his army.
  • When Scott Lang is listing movies with a time travel theme, he accidentally says Die Hard (1988). "Die Hard" star Bruce Willis did star in several time travel-themed movies, including The Kid (2000), Twelve Monkeys (1995), and Looper (2012).
  • Bruce Willis is referenced twice in Avengers: Endgame. First, Scott Lang references Bruce Willis as having done a movie with a time travel theme. Bruce Willis is referenced again when the Avengers are walking to the quantum force pad to time jump. Their slow walk and formation scene is similar to another Bruce Willis movie, Armageddon.
  • When Tony hands Steve back his shield, you can hear the opening stanza of Alan Silvestri's "Captain America March" play in the background.
  • The opening scene with Hawkeye was conceived as part of the finale of Avengers: Infinity War (2018). However, because Hawkeye had not been featured throughout that film, the Russo Brothers moved the scene to the beginning of this movie.
  • The writers said they got inspiration for the Avengers' unexpected character development in the "Five Years Later" sequence from Marvel's "What If?" comics.
  • The only time a live-action adaptation of Spider-Man has used an Instant Kill option. It is seen briefly in Spider-Man: Homecoming (2017) when Peter tries out his new suit but instantly undoes the function.
  • As Steve was the one to take the Stones back to their original timelines, he inevitably went to Vormir, where his first nemesis, Red Skull, resides over the Soul Stone's resting place. This is one of the few loose ends that the writers have not addressed.
  • Steve's military uniform in the 1970 New Jersey scene is labeled "Roscoe". It refers to the Marvel Comics character Roscoe Simons, who was another Captain America.
  • When Steve Rogers enters the elevator in 2012 along with the S.T.R.I.K.E. crew, it parallels the events of Captain America: The Winter Soldier (2014). When Rogers salutes HYDRA to Agent Sitwell, it is reminiscent of the 2018 comic arc "Secret Empire", where Steve Rogers's personal history was altered so he was an undercover HYDRA operative all along.
  • Tony's daughter after the time skip is named Morgan. In the comics, Tony has a rarely-appearing (male) cousin named Morgan Stark, who usually brings trouble with him whenever he shows up.
  • Hawkeye has become the darker and edgier vigilante Ronin after losing his family when Thanos wiped out half of the universe's population. This mirrors the events of The Ultimates 3, where Hawkeye donned a new costume and adopted a more violent, suicidal attitude after his family was murdered in The Ultimates 2. It also refers to the 616 version taking on the Ronin identity post "Civil War". As the vigilante Ronin, Clint's take-no-prisoners attitude against criminals after the death of his family makes him similar to the Punisher, another character who frequently partners with Black Widow.
  • Ant-Man being seen interacting with the Avengers during the Battle of New York is a nod to the fact that Ant-Man was one of the original members of the Avengers in the comics, along with the Wasp (although in the comics it's Hank Pym instead of Scott Lang).
  • Captain America says "Hail HYDRA" in the film, a reference to the "Secret Empire" storyline in the comics. The difference here is that he's masquerading as a HYDRA operative to get what he needs, instead of being an actual HYDRA agent like he was in "Secret Empire".
  • The 2012 version of Thor using Mjolnir as a magical defibrillator is straight out of the comics, where he has done this several times in the past, sometimes even summoning entire bolts of lightning for more sturdy patients. Of course, in the comics Thor actually has extensive medical knowledge from his time living as Dr. Donald Blake, so he actually knows what he's doing.
  • Steve fighting with his 2012 self is a direct reference to Captain America #156.
  • Nebula's significant screentime in this movie is true to the comics on how she was instrumental in Thanos's downfall in "Infinity Gauntlet". 2014-Nebula being Thanos's lackey who sets up the final battle is the closest the MCU has to Terraxia, Thanos's Distaff Counterpart created via the Infinity Gauntlet.
  • When Red Skull meets Clint, he calls him "son of Edith", despite having called Thanos, Gamora, and Natasha the child of their respective father. In the comics, Harold Barton was abusive and an alcoholic. Clint and Nat's "fight" for the Soul Stone (requiring the death of someone you love) recalls their turbulent relationship in the comics. Nat sacrificing herself for Clint to obtain the Soul Stone (which eventually revives his family) is the direct opposite of the Ultimates where Black Widow is the one who killed Clint's family.
  • Clint compares himself to Thanos against criminals; he later hands over the Stark Gauntlet unknowingly to 2014-Nebula. In the comics, Nebula steals the Infinity Gauntlet from Thanos's physical body after he has assumed the form of Eternity.
  • The finale has Thor dual-wielding Mjolnir and Stormbreaker, similar to the climax of Jason Aaron's "The God Butcher/Godbomb" story where Thor dual-wields the hammers of his present and future selves at the same time. It also recalls the scene from Jonathan Hickman's Avengers where the Unworthy Thor uses both his axe and an alternate Mjölnir that previously belonged to a Mirror Universe version of Thor during the battle against the Beyonders.
  • Tony and Thanos's final showdown is built up to parallel the fated duel of Thor and Cul Borson/Serpent in the "Fear Itself" comic storyline. Both Thor and Iron Man kill their nemeses, but they also die from mortal injuries.
  • The Stark Gauntlet is analogous to the Odinsword/Odin-weapons as the Avengers' Infinity +1 Sword.
  • Steve finally lifting Mjolnir with the war cry "Avengers Assemble!" is right out of the "Fear Itself" story arc, where he rallies Avengers and civilians in the battle against the Serpent. In the movie, he rallies the resurrected heroes in the final battle against Thanos.
  • While he does not say it, Captain America being the last man standing and being ready to fight Thanos and his army, even though the odds are against him, calls back to the moment in the "Infinity Gauntlet" comic where Cap tells Thanos that as long one man is left standing, he has not won yet. Additionally, Thanos destroys Cap's shield during their battle, which is something that also happens in the original comic. During the final battle, Thanos spins his double-bladed sword in front of him like the rotor blade of a helicopter, referencing his "Thanoscopter" from the comics.
  • Pepper's Rescue armor is purple, which is what it was colored in the Iron Man: Armored Adventures (2008) cartoon rather than the comics. The female heroes joining together to help Captain Marvel get to the quantum tunnel serves as a nod to the comics' A-Force, first introduced in "Secret Wars" (2015).
  • Tony leaving behind an epitaph in the form of a hologram recalls the time Iron Man fell into a coma but his consciousness was preserved as an A.I. techno-ghost.
  • Hulk ends the film with his arm in a sling thanks to his use of the Infinity Gauntlet. At the end of the original "Secret Wars", Hulk also ended up with a broken limb, though in that case it was a leg.
  • When Thor decapitates Thanos at the start of the movie, Rocket asks him what he did. Thor sadly tells him, "I went for the head," to echo Thanos's taunt from the previous movie. It shows how Thor is still reeling from his previous mistake.
  • Joe Russo has confirmed in interviews that elderly Steve found a way to make another time jump from his alternate reality with Peggy towards his original with Sam, which is left to be a mystery for now.
  • Anthony Mackie was surprised to learn about his character's ending as Falcon was and, as if by fate, he learned this info from none other than, Chris Evans himself. He stated in an interview: "We were at his house and Chris goes, 'You excited?' And I go, 'What are you talking about?'" Mackie told IMDB in a recent interview. "He goes, 'You don't know?!' And he jumps up, runs out of the room, and comes back in with the script, We cried. We drank. We laughed," Mackie said. "I am very happy I got that moment with Chris, for him to not only pass me the shield, but to tell me it was happening."
  • Anthony Mackie went on to discuss just how much being the new Captain America means to him, and the general vibe on-set when he shot the scene. "It means a lot to me for my sons to see Captain America as a black dude, and for me to be that dude for my sons," Mackie said. "So that moment was not just, 'Hey, we're acting.' It was more, and then they cut and I cried. And Chris cried. And the Russos cried. And everyone cried. It was an emotional day." So uh, yeah just when I thought I was emotionally stable again after seeing this movie, I'm now sobbing profusely at my work desk. I think I speak for everyone when I say we salute you, Captain America, forever and always.
  • When Clint goes back in time for the test run, he passes by a pickup truck while approaching the house. The license plate has the number 182, which references the length of the movie at 182 minutes.
  • During the final battle scene, Howard the Duck can be seen briefly behind Hope Van Dyne/The Wasp.
  • Towards the end of the movie, at the time of Tony Stark's funeral, Morgan Stark (Tony's and Pepper's daughter) is shown a recorded message from Tony which he had recorded in case of his untimely death in the form of 3D hologram of himself. This is a nod to further development of the BARF (Binarily Augmented Retro-Framing ) technology invented by Tony Stark, introduced in Captain America: Civil War (2016) for therapeutic pursuits.
  • After the whole intense climax and Tony's funeral, Steve Rogers a.k.a. Captain America is shown going through the miniaturized time heist machine to deliver all six Infinity Stones and Mjolnir to their respective locations in the past from where the Avengers borrowed them earlier in the movie. It's interesting to note that the Soul Stone which Clint brought from Vormir, after Natasha sacrificed herself for it, is guarded by Johann Schmidt a.k.a. Red Skull, who is the main nemesis of Captain America from Captain America: The First Avenger (2011). Captain returning in the end, delivering all the Stones to their respective places, indicates that he interacted with Red Skull, which isn't mentioned or shown in the movie.
  • As a nod to the events from the ending of Avengers: Infinity War (2018), only the heroes who weren't caught in the Decimation effect were shown in the Marvel Studios sequence for this film, while the ones who died were removed.
  • In the 1970 sequence, a S.H.I.E.L.D. agent describes Tony Stark as having a "Mungo Jerry" beard. Mungo Jerry were a British skiffle revival band who had a massive international hit in 1970 with "In The Summertime," and whose members indeed sported well-sculpted facial hair. Ironically, lead singer Ray Dorset had what can only be described as the opposite of Tony Stark - the extremely long sideburns not unlike those later made famous by Wolverine from the X-Men.
  • Brie Larson (Carol Danvers/Captain Marvel), Tom Hiddleston (Loki), and Samuel L. Jackson (Nick Fury) previously starred together in Kong: Skull Island (2017), along with fellow MCU veterans John C. Reilly (Rhomann Dey in Guardians of the Galaxy (2014)) and Shea Whigham (Roger Dooley on Agent Carter (2015)).
  • Thor travels back to the events portrayed in Thor: The Dark World (2013). That film also featured Alice Krige, who appeared in the final episode of Star Trek: Voyager (1995) - also called "Endgame (2001)" - as the Borg Queen. The story of that episode is an acknowledged influence on this film, and her own role strongly paralleled that of Thanos.
  • In the scene where Hulk and Rocket visit Thor in New Asgard, Korg from Thor: Ragnarok (2017) is seen playing Fortnite (2017) in the hut. Around the film's release, Epic Games launched a new crossover game mode based on it, similar to the tie-in event with Avengers: Infinity War (2018).
  • At the end of the meeting between Tony Stark (Robert Downey Jr.) and his father Howard Stark (John Slattery) in 1970, Tony says, "No amount of money ever bought a second of time." This is a partial reference and a hidden nod to Edison, the Man (1940), where Thomas Alva Edison (Spencer Tracy) says, "All the money in the world, you can not buy a minute of it." Both Stark and Edison are well-known as genius scientists.
  • Hawkeye is seen wearing an ankle brace in the opening scene. This is the same device that Scott Lang wears in Ant-Man and the Wasp (2018), which means that both he and Hawkeye were under house arrest following the events of Captain America: Civil War (2016).
  • Thanos in both Avengers: Infinity War (2018) and "Endgame" has a left-handed gauntlet that carries the Infinity Stones, whereas Hulk/Bruce Banner and Iron Man/Tony Stark both use a right-handed gauntlet with the Infinity Stones, perhaps symbolizing their different ideologies.
  • The concept of Captain America permanently going back to his time in the 1940s to be with Peggy Carter after the final battle, and his later appearance as an old man in the present, is similar to Bucky Barnes's Ultimate Marvel counterpart. In that version, Bucky survived WWII and married Cap's ex-girlfriend Gail Richards, and later appeared in the present as an old man after Cap was thawed out, as seen in the first issue of the Ultimates (the Ultimate Marvel version of the Avengers) and its later animated film adaption, Ultimate Avengers (2006).
  • During Tony Stark's funeral, a flower wreath is sent across the lake with Tony Stark's original arc reactor chest piece. Previously, during the events of Iron Man (2008), it was placed in a glass case by Pepper Potts and the words "Proof that Tony Stark has a heart" were engraved on it, which is also seen in this film.
  • Thor (Chris Hemsworth) was supposed to confront his 2012 self, but the idea was ultimately scrapped, as revealed by directors Joe Russo and Anthony Russo. While it was Captain America (Chris Evans) who had a direct entanglement with himself from the events of The Avengers (2012)'s Battle of New York from 2012, and Nebula (Karen Gillan) with her evil counterpart from 2014's Guardians of the Galaxy (2014), apparently Thor was supposed to have his own similar moment in "Endgame". Speaking with MTV's podcast, the Russos said that the initial plan was to have a Thor vs. Thor confrontation in Asgard. However, they felt like "it overly complicated [the plot]", adding that they also liked the "Cap vs. Cap better", so they gave up the bit. Instead, they gave Thor a different experience when he went back in time - another chance to talk to his mom and properly say goodbye to her, commenting, "I think there, we also deferred to the storyline between Thor and his mother. [It] was so resonant, that we really wanted to run... That was really more a part of Thor's journey and repair than confronting his former self. So that's really what happened there, why we went with that."
  • Co-director Joe Russo was asked about the injury sustained by the Hulk when using the makeshift Iron Gauntlet to snap everyone back to life, his arm in a sling during Tony Stark's funeral, and it appears this isn't something he'll be able to heal from. Joe Russo explained: "He's lost an arm. He lost Natasha. That's not coming back. He's damaged himself. I don't know. It's interesting. That's permanent damage, the same way that it was permanent damage with Thanos. It's irreversible damage. His arm, if you noticed, is a lot skinnier. It's blackened. So, he loses a lot of strength there."
  • When asked how Cap was worthy to lift Mjolnir, according to Anthony Russo, he's always been worthy, and during that moment in Avengers: Age of Ultron (2015), he stopped himself from lifting the hammer fully out of deference to Thor: "In our heads he was able to wield it, and he didn't know that until that moment in 'Ultron' when he tried to pick it up. But Cap's sense of character and his sense of humility, sort of out of deference to Thor's ego, you know Cap in that moment, realizing he can move the hammer, decides not to."
  • Thanos's Infinity Gauntlet was worn on the left hand. When Tony Stark creates a new gauntlet, it is worn on the right hand. Swapping hands symbolizes the reversal of Thanos's snap, for which the new gauntlet was created.
  • Immediately after Nebula burns her outer skin retrieving the power stone orb, she holds her cybernetic arm up towards Rhodey/War Machine. Given the look of her internal robotics, this is very reminiscent of Terminator 2: Judgement Day and the scene where the Terminator peels back his forearm skin to reveal his metallic skeleton to Miles Dyson played by none other than Don Cheadle. Both of the films also revolve around the central theme of time travel in order to prevent an apocalyptic event.
  • In the film's epilogue, Ned is shown wearing a t-shirt featuring the titular character from The Iron Giant (1999). That film was very loosely based on Ted Hughes' 1968 novel coincidentally entitled "The Iron Man". The film features a giant metallic man who ultimately sacrifices himself to save the world, vaguely referencing Iron Man's ultimate fate here. Vin Diesel (Groot) provided the voice of the Iron Giant.
  • Natalie Portman's brief cameo as Jane Foster was unused footage from Thor: The Dark World (2013). Portman however did reprise her role in some small capacity: she recorded a new voiceover for when her character is seen in the distance talking to Frigga.
  • The name tag on the storage unit containing Scott Lang's van has "LANG 616" written on it. This is a reference to Earth 616, the primary continuity in which most Marvel Comics titles take place.
  • Several elements are adapted from the comics for what happens to Captain America at the end of the film in regards to his decision to return to the 1940s and later appearance as an old man where he passes his shield and title to Sam Wilson. -"Ultimates" (2002): Adapts several elements of Bucky's Ultimate Marvel counterpart of living over several decades after World War II and later appearing in the present as an old man. -"House of M" (2005): Steve Rogers living the quiet life with Peggy Carter rather than being a superhero. -"The Tomorrow Soldier" (2014): After Steve Rogers becomes an old man, he passes on his shield and title as Captain America to Sam Wilson (Falcon).
  • General Ross attends Tony Stark's funeral and is the first time since 2008 that both Ross and Banner are in the same scene/area.
  • The characters that relay the Gauntlet from Clint to Tony are Black Panther, Spider-Man, and Captain Marvel, all of whom will be part of the upcoming Phase 4 of the Marvel Cinematic Universe. Thus the passing of the Gauntlet is a metaphor for the first generation of MCU characters passing the franchise to the next generation.
  • After Tony snaps his fingers at the end, a scene was filmed with him having a vision of his daughter Morgan, now grown up, played by 13 Reasons Why (2017) star Katherine Langford. Much like Thanos's conversation with a young Gamora in Avengers: Infinity War (2018), Tony and Morgan would discuss what he'd just done and she'd forgive him, putting him at peace. The scene was ultimately scrapped because there wasn't the emotional connection with an adult version of his daughter, and the Russos dismissed it as "too many ideas in an overly complicated movie."
  • During the funeral scene, Tom Holland, who plays Spider-Man, was told they were filming a wedding.
  • Don Cheadle's Rhodey worries about booby traps on Morag - in Ocean's Eleven (2001), his character Basher specialized in setting them.
  • Even though this is the fourth Avengers film, this is the first film that contains all members of the original lineup that appeared in Avengers #1 (1963). Iron Man, Thor, Hulk, Giant-Man/Ant-Man, and the Wasp were the founding members. Hank Pym and Janet Van Dyne were Ant-Man & Wasp in the comic at the time, not Scott Lang and Hope Van Dyne. Hank and Janet do appear, though, in this film. Loki was the main antagonist in the first issue, and also makes an appearance in the film. Captain America didn't join the team until Issue 4; however, he was later given founding member status.
  • In The Avengers (2012), Tony tells Bruce Banner that the exposure to gamma radiation should have killed him if it wasn't for the other guy (Hulk). When Bruce asked Tony for what purpose the Hulk would have saved him, Tony said they will find out. "Endgame" gives the answer to the question, as Bruce (now fused with the Hulk) is the only one capable of using the Gauntlet to bring everyone back. He even says he was always meant for this purpose before snapping his fingers.
  • In a post-credits scene of The Avengers (2012) following the Battle of New York, The Other talks to Thanos saying humans are unruly and not the cowering wretches they expected; in this film when Thanos of 2014 views Nebula's memory drive he immediately recognizes the Avengers and refers to them as unloyal wretches.
  • Akihiko, the Japanese gangster killed by Clint Barton (Jeremy Renner) as the rogue avenger Ronin, is played by Hiroyuki Sanada, who also played a Japanese Ronin in the film 47 Ronin (2013).
  • Vin Diesel says I am groot only once in this film in the scene when Thor and Starlord fight over who should lead the guardians the rest of the guardians suggested a knife fight groot's 1 line translated to "I like knives"
  • In the final battle, Howard the Duck appears briefly amongst the Ravagers from _Guardians of the Galaxy 2_. Despite only being visible for 18 frames (less than 1 second), the 3D model was fully rigged and included detailed animations for the feathers.
  • During the climactic battle when Peter Parker (spider man) returns, Tony Stark gives him a hug, to which Peter responds "this feels good". This is a throwback reference to Avengers Infinity War when Peter said "I don't feel so good" as he died in Tony's arms.
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