Monsters vs. Aliens Movie Poster

Trivia for Monsters vs. Aliens

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  • The synthesizer that President Hathaway (Stephen Colbert) uses to communicate with the giant robot is a Yamaha DX7.
  • The fighter jets are F-14 Tomcats and the helicopters are AH-64 Apaches.
  • While the President bears a slight resemblance to Stephen Colbert, the character's look had been finalized some time before Colbert had even been cast for the part.
  • The large aircraft used to transport the monsters to San Francisco is based on an actual Guppy aircraft. The first Guppy was built in 1962 for N.A.S.A. by Aero Spacelines of California to transport spacecraft components.
  • The first computer animated movie to be directly produced in a stereoscopic 3-D format, instead of being converted into 3-D after completion.
  • A code title used during production was "Showdown".
  • When the government agents arrive at the church to investigate the crash site, when the camera pans to the back of their van, when the door closes, you can see a camera crew visible in the reflection of the door.
  • The multi-colored pads on which Dr. Cockroach Ph.D. (Hugh Laurie) dances use the same sound effects as the light-up memorization game "Simon". The dancing in sync with the lighted pads is a reference to the arcade game Dance Dance Revolution (1998), in which you do the same thing, only in sync with the on-screen prompts.
  • The San Francisco streetcar that Dr. Cockroach modifies with rocket engines is an Italian-made vintage Peter Witt streetcar in the 1928 white-and-yellow color scheme. The streetcar in the movie has number #2930 (as of release, not an assigned number).
  • This movie is set in Modesto, California, the birthplace of George Lucas.
  • For the scenes of Ginormica wandering the streets of San Francisco, a replica of the set was built, and supervising animator Line Korsgaard Andersen was videotaped walking around it as reference for the animators.
  • The two technicians who first discover Gallaxhar's ship are named Ben and Jerry, like the ice cream brand.
  • In one of the cities where Gallaxhar's message is being shown, there are blinking neon letters on one of the skyscrapers. These letters are Japanese katakana, and they spell "ka-ra-o-ke".
  • The license plate of the yellow cars Susan uses as a roller skate reads "XQZMEEEE" or "excuse me", which she later says as she is skating through traffic on her way to the Golden Gate Bridge.
  • After Susan saves B.O.B., Link, and Dr. Cockroach, Ph.D. from being crushed on Gallaxhar's ship, after becoming Ginormica again, Dr. Cockroach, Ph.D. says "By Hawking's chair." This is a reference to Stephen Hawking, a renowned academic, who was bound to a motorized wheelchair, due to amyotrophic lateral sclerosis, also known as Lou Gehrig's disease, or A.L.S.
  • The famous sound effect, the "Wilhelm Scream", is featured in this film. The scream was originally done in the 1950s by Sheb Wooley, who sung Flying Purple People Eater (1958), which was used in the closing credits.
  • The two technicians who first discover the incoming meteor call the control center and issue a "Code Nimoy" alert, an homage to Leonard Nimoy.
  • When Gallaxhar says "UUUH! Fire phasoid cannon!" you can see the contrail left behind by the flying tennis rackets going past his eyes. The filmmakers also confirmed that.
  • The screen on the machine, that Dr. Cockroach, Ph.D. (Hugh Laurie) uses to try to get Susan (Reese Witherspoon) back to normal size, shows the two pictures of Susan in 8-bit form, which was the style used a lot in arcade games.
  • The film has a localized version in Australia, where the News Reporter is not voiced by Ed Helms, but instead voiced by David Koch, a co-presenter of the morning show "Sunrise", seen on Channel 7 across Australia.
  • When Gallaxhar (Rainn Wilson) is talking to Earth about what he is about to do, in the scene when Gallaxhar is talking in Tokyo, Japan, on the top right corner, a scene from Madagascar (2005) can be seen of Marty talking to Alex.
  • The President's code name is "Papa Bear", which is what Stephen Colbert calls Bill O'Reilly on The Colbert Report (2005).
  • The monsters shown in the movie are all references to original monsters in movies. Ginormica (Reese Witherspoon) is a reference to Attack of the 50 Foot Woman (1958), B.O.B. (Seth Rogen) is a reference to The Blob (1958), The Missing Link (Will Arnett) is a reference to Creature from the Black Lagoon (1954), Dr. Cockroach Ph.D. (Hugh Laurie) is a reference to The Fly (1958), and finally Insectosaurus is a reference to Mothra from Mosura (1961).
  • Each Monster on the team is virtually immortal.
  • The first full length trailer for the movie appeared during Super Bowl XLIII in 3-D. Prior to the game, various displays were set up throughout the U.S., giving away free 3-D glasses.
  • Rainn Wilson, John Krasinski, Ed Helms, and Will Arnett appeared on The Office (2005).
  • Early in the movie, B.O.B is bouncing a ball off the wall of his cell. This could be a reference to Hilts, the Cooler King (Steve McQueen) from The Great Escape (1963). McQueen played Steve Andrews in The Blob (1958) (B.O.B is a parody of the Blob).
  • The song that the President plays on the synthesizer is "Axel F" by Harold Faltermeyer, which was featured in Beverly Hills Cop (1984) and Beverly Hills Cop II (1987).
  • Final DreamWorks Animation film to have the 2004-styled DreamWorks Animation SKG logo, where the fisher boy uses balloons to get up to the moon.
  • Seth Rogen's third DreamWorks Animation film, after Shrek the Third (2007) and Kung Fu Panda (2008).
  • General W.R. Monger's (Kiefer Sutherland) insignia, on his right chest, is a combination of clouds and the title character of Shrek (2001)'s face, a nod to another DreamWorks Animation "monster".
  • In just the beginning, the tech guy says "Supernova, this is Red Dwarf". Red Dwarf (1988) is a British comedy of science fiction set in space. Supernova and Red Dwarf are also stages in the life of a star.
  • Insectosaurus is a combination of Godzilla, Mothra (of Godzilla's movies fame) and the Tyrannosaurus Rex from the Jurassic Park film franchise.
  • The President's playing the five-note tune on the keyboard, before he plays "Axel F", was from Close Encounters of the Third Kind (1977).
  • This is the second DreamWorks Animation movie to have a female protagonist, after Chicken Run (2000).
  • Kiefer Sutherland and Reese Witherspoon appeared in Freeway (1996).
  • DreamWorks Animation's eighteenth feature film, and last film of the 2000s.
  • Hugh Laurie's second DreamWorks film, after Steampuff (2006).
  • The large room, in which members of the U.S. Government meet up to use monsters as a form of defense against the aliens bears a striking resemblance to the war room from Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb (1964). The character of General Monger even resembles and sounds like General Turgidson (George C. Scott) from that Kubrick film.
  • When the Monsters are fighting the alien robot on the Golden Gate bridge, it shows a solid middle divider between north and south lanes. The bridge actually uses yellow removable pylons, so the amount of lanes on a given side can be adjusted for commute hours.
  • The city of Modesto, California, is depicted as a small, rural farm town in this film, when in reality, it is a bustling city, complete with a shopping mall right off the California 99 freeway, that flows through the city.
  • Seth Rogen and Will Arnett's second animated film together, after Horton Hears a Who! (2008) which also featured Amy Poehler.
  • Susan resembles her voice actress Reese Witherspoon (at least after she becomes Ginormica, and her hair changes to white).
  • One of the missiles fired from the Apache helicopters at the alien robot says "E.T. Go Home!" and when it's seen on-screen, the iconic theme to E.T. the Extra-Terrestrial (1982) can be heard.
  • "Planet Claire" from the B-52's is playing as President Hathaway climbs the stairs before addressing the alien robot.
  • Renée Zellweger's third DreamWorks Animation film, after Shark Tale (2004) and Bee Movie (2007). All those times had her voicing a love interest, but instead of being one to the main character, she voices the lady of the couple that first encounter Galaxhar's giant robot once it arrives on Earth.
  • DreamWorks Animation's second biggest opening for a non-sequel, opening to 59.3 million dollars. It's only behind Kung Fu Panda (2008), which opened to 60.2 million dollars.
  • After being nominated without winning ten times in the past, DreamWorks Animation finally won their first Saturn Award for Best Animated Film with this one. They'd get nominated seven more times in the future, but only one of those seven nominations, Puss in Boots (2011), won.
  • Seth Rogen's (B.O.B.'s) second collaboration with Amy Poehler and John Krasinski, after Shrek the Third (2007), another film by DreamWorks Animation.
  • With a budget of $175 million, this is the most expensive animated film not produced by Disney or Pixar.
  • Before turning into Ginormica, Susan Murphy (Reese Witherspoon) has brown hair. This makes it the second time Witherspoon played a brunette. The first being Walk the Line (2005).
  • The third highest grossing animated film of 2009, after Ice Age: Dawn of the Dinosaurs (2009) and Up (2009).
  • Though some say this film barely made back its $175 million budget, its final worldwide gross was $381,509,870, more than twice the amount.
  • Reese Witherspoon has denied appearing in any further sequels beyond her first sequel Legally Blonde 2: Red, White & Blonde (2003), after having had an unpleasant time being a part of it. This was the only sequel film she appeared in up until Sing 2 (2021), which is a likely reason as to why this movie never became a franchise.
  • Third theatrically released animated film for Kiefer Sutherland, after The Nutcracker Prince (1990) and The Wild (2006).
  • The first DreamWorks Animation film composed by Henry Jackman, who also composed Puss in Boots (2011) and Turbo (2013).
  • Amy Poehler and Will Arnett were a real-life married couple at the time of this film's release, and voiced enemies to each other in this film. They also appeared together in fellow animated film Horton Hears a Who! (2008), but through the opposite sorts of roles that they have in this movie.
  • The third DreamWorks Animation film to be released in a 2:35:1 aspect ratio, after Spirit: Stallion of the Cimarron (2002) and Kung Fu Panda (2008) both of which jointly had Hans Zimmer and John Powell compose the score.
  • Throughout the scene where Susan turned into Ginormica, and the rest of the movie, no one points out that her hair turned white.
  • Seth Rogen's fourth animated film after Shrek the Third (2007), Horton Hears a Who (2008), and Kung Fu Panda (2008).
  • Will Arnett's fourth animated film after Ice Age: The Meltdown (2006), Ratatouille (2007), and Horton Hears a Who (2008).
  • This is the tenth movie in which the Golden Gate Bridge has been destroyed, after San Francisco (1936), It Came from Beneath the Sea (1955), Invasion of the Body Snatchers (1978), Superman (1978), A View to a Kill (1986), The Rock (1996), The Core (2003), X-Men: The Last Stand (2006), and Mega Shark vs. Giant Octopus (2009). But the bridge was not destroyed in the movie San Francisco, because that movie was about the earthquake of 1906, and the bridge did not start construction until 1933.
  • Susan is exactly 49 feet 11 inches (15.21 meters) tall, making her almost the same height with Nancy Archer from Attack of the 50 Foot Woman (1958). The creators did this so that people won't get confused.
  • Dr. Cockroach is the smartest monster in the group, and second being Susan (Ginormica).
  • The scene with the three monsters looking down at the marching clones while plotting to save Susan is similar to the scene from The Wizard of Oz (1939), where Scarecrow, Cowardly Lion, and Tin Man are looking down on the wicked witch's soldiers. The dumb member of each group (Scarecrow and B.O.B. respectively) comes up with the same plan: disguising themselves to blend in.
  • The hand sign that the President does when meeting the Robot Probe is the Vulcan hand sign from the TV series, Star Trek (1966).
  • As the President is walking up the platform to communicate with the robot probe, one of the secret service agents references him as code name: "Papa Bear". Stephen Colbert calls his 'idol' Bill O'Reilly "Papa Bear" on The Colbert Report (2005).
  • In earlier drafts of the film, Susan was supposed to be called the '50,000 pound woman'.
  • Even though this film doesn't have a sequel yet, it is still a franchise. It has one video game, one short film: B.O.B.'s Big Break (2009), two TV specials: Monsters vs. Aliens: Mutant Pumpkins from Outer Space (2009) and Night of the Living Carrots (2011), and one TV series with the same name which aired from 2013 till 2014.
  • The song that Dr. Cockroach dances to in Gallaxhar's ship is "Roses Are Red" by Aqua.
  • In the beginning, Susan wakes up and gets scared in the same way a child gets frightened by a monster in the Pixar film, Monsters Inc. (2001), another movie about monsters.
  • Susan's (Ginormica's) space suit in this film resembles Jennifer Lopez's red bodysuit in The Cell (2000).
  • Invisible Man is dead in this film, but he appears in the short film, B.O.B.'s Big Break (2009), as that film took place way before this movie.
  • The movie takes place through a course of three weeks. In the film, when Susan reunites with Derek, she says "You wouldn't believe my last three weeks".
  • When Susan is being chased around San Francisco by the Robot Probe, she accidentally slips off a roof and hangs on to the rain gutter. This is a reference to the opening scene of Vertigo (1958).
  • Dr. Cockroach completing the color code system to initiate self destruction mode is similar to the way David Levinson uploads a computer virus into the Mothership in Independence Day (1996).
  • When the military shoots missiles to the Robot Probe, the missiles get deflected. This is similar to War of the Worlds (2005) and Independence Day (1996), where the military shoots missiles but they get deflected by the aliens' shields.
  • Susan is able to survive extremely heavy and atomic forces, making her virtually indestructible. This is because of her power, which comes from the 'Quantonium' substance.
  • Gallaxhar (Rainn Wilson) says "Extract the Quantonium with extreme prejudice", a reference to the quote "Terminate with extreme prejudice" from Apocalypse Now (1979).
  • The scene where The Missing Link is found frozen in an iceberg but thaws and escapes is similar to the discovery of the creature found frozen in The Thing (1982).
  • This film and Megamind (2010) have many similarities. First, they are parodies of other Pop culture icons: Monsters vs. Aliens is inspired by monsters from the 50's and 60's, while Megamind is inspired by superheroes and villains like Superman, Batman, and Lex Luthor. Second, they talk about empowerment: Susan feels proud to be a monster while Megamind accepts his role as a hero. Third, they both have aliens: Monsters vs. Aliens has Gallaxhar and Megamind has the titular character. And fourth, they both grossed over 300 million in the world-wide box office: Monsters vs. Aliens earned $381 million while Megamind earned $321 million.
  • Despite having G rating, the movie actually has a lot of violent scenes for an animated film.
  • In the scene where Insectosaurus meets the Robot Probe in the Golden Gate Bridge, fans would make remarks to Pacific Rim (2013), a movie about man-made robots who fight giant monsters.
  • In the original concept arts of the film, The Missing Link has more chest hair than what was displayed in the film. The creators decided to reduce the amount of hair he has to make him look more like a "macho jock".
  • B.O.B. is colored blue, while his inspiration, The Blob monster from The Blob (1958), is colored red.
  • What makes Insectosaurus similar to Godzilla is his size and ability to shoot silk, but Godzilla shoots his "Atomic" Breath.
  • It is mentioned by General Monger that Insectosaurus is 350 feet (106.7 meters) tall, which makes him 20 feet taller than Godzilla from Godzilla: Final Wars (2004), who stands 330 feet (100 meters).
  • Insectosaurus is seven times as tall as Susan (Ginormica).
  • The film started as an adaptation of a horror comic book, Rex Havoc, in which a monster hunter Rex and his team of experts called "Ass-Kickers of the Fantastic" fight against ghouls, ghosts and other creatures. The earliest development goes back to 2002, when DreamWorks first filed for a Rex Havoc trademark. In a plot synopsis revealed in 2005, Rex was to assemble a team of monsters, including Ick!, Dr. Cockroach, the 50,000 Pound Woman and Insectosaurus, to fight aliens for disrupting cable TV service. In the following years, the film's story diverged away from the original Rex Havoc, with directors Conrad Vernon and Rob Letterman finally creating the storyline from scratch.
  • Ever since the film was made, all feature films released by DreamWorks Animation were produced in a stereoscopic 3-D format, using Intel's InTru3D technology. IMAX 3D, RealD and 2D versions were released as well.
  • To promote the 3-D technology that is used in the film, DreamWorks ran a 3-D trailer before halftime in the U.S. broadcast of Super Bowl XLIII on February 1, 2009. Due to the limitations of current television technology, ColorCode 3D glasses were distributed at SoBe stands at major national grocers. The Monsters, except Susan and Insectosaurus, also appeared in a 3-D SoBe commercial airing after the trailer.
  • In July 2014, the film's distribution rights were purchased by DreamWorks Animation from Paramount Pictures and transferred to 20th Century Fox; the rights are now owned by Universal Pictures.
  • In 2009, the film was nominated for four Annie Awards, including Voice Acting in a Feature Production for Hugh Laurie. Reese Witherspoon and Seth Rogen were both nominated for best voice actor and actress at the 2010 Kids' Choice Awards for voicing Susan and B.O.B, but lost to Jim Carrey for Disney's A Christmas Carol (2009). the film was also nominated for Best Animated film but lost to Up (2009). On June 24, 2009, the film won the Saturn Award for Best Animated Film.
  • In the "first look" photo of the film's characters, Susan wears a red jumpsuit instead of the dark grey one shown in the movie. Although in the video game, she wears the red uniform when fighting the Robot Probe.
  • Years the monsters were captured: Susan / Ginormica: 2008, Dr. Cockroach: 1961, B.O.B.: 1958, The Missing Link: 1962, and Insectosaurus: 1969.
  • The McDonald's Happy Meal toy figure of Susan shows her sporting blonde hair, and wearing a red jumpsuit with blue and green cars for her feet. This is a completely inaccurate representation of her compared to what was shown in the movie; she has platinum-white hair, wears a dark grey / orange jumpsuit, and is seen with red and yellow cars for her feet when skating.
  • Although Ginormica's prison uniform is numbered 00005, she clearly arrived after Dr. Cockroach, B.O.B., Link, Insectosaurus, and the Invisible Man (R.I.P.). This means that she should wear number 00006, but since Invisible Man is dead, it makes sense to let her wear 00005.
  • When Susan first transforms into Ginormica, her hair turns white as a side effect. However, when she gets back to her normal size by Gallaxhar, her hair remains white instead of being brown again. Some people pointed out that this is because of her stress levels, which causes her hair to permanently remain white.
  • The Robot Probe is somewhat similar to space probes sent by NASA to discover Mars by snatching photos of the planet, while the Robot Probe instead monitors activity and destroys everything.
  • The president playing the synthesizer to communicate with the Robot Probe has become one of the most popular internet "memes" of the 2010s.
  • At one point, Gallaxhar curses "Oh Spaceballs!", a reference to the movie Spaceballs (1987).
  • When Susan meets General Monger for the first time, she asks him: "You are a real person right? And not one of those half person half machine, you know what you call those things?". General Monger then replies: "A Cyborg?", which is a reference to The Terminator (1984).
  • Reese Witherspoon's first animated movie since The Trumpet of the Swan (2001). This is also her first 3D animated movie from Dreamworks Animation.
  • The movie takes place in Modesto & San Francisco, California, and somewhere in Las Vegas, Nevada (Area 5? base).
  • The ending of the movie could be forshadowing a sequel, but it was never made. Even though Dreamworks Animation could possibly helm the sequel, it would probably release sometime in the near future.
  • According to the Monsters vs. Aliens wikia page, the Robot Probe is 360 feet (109 meters) tall. Sometimes even regarded as "roughly the same size as Insectosaurus, but slightly taller". This is inaccurate compared to what was shown in the Golden Gate Bridge fight, as the Robot is clearly way taller than Insectosaurus (who is 350 feet). From what was displayed in the movie, the Robot could be anywhere around 390 - 400 feet.
  • B.O.B. (Seth Rogen) was originally called "Ick!" in earlier drafts of the film's production.
  • Production designer David James stated that the film is "a return to what made us nerds in the first place," getting classic movie monsters and relaunching them in a contemporary setting. Director Conrad Vernon added that he found it would be a great idea to take hideous monsters and giving them personalities and satirizing the archetypes.
  • Ed Leonard, CTO of DreamWorks Animation, says it took approximately 45.6 million computing hours to make the film, more than eight times as many as the original Shrek.
  • Several hundred Hewlett-Packard xw8600 workstations were used, along with a 'render farm' of HP ProLiant blade servers with over 9,000 server processor cores, to process the animation sequences. Animators used 120 terabytes of data to complete the film. They even used 6 TB for an explosion scene.
  • Based on 213 reviews collected by Rotten Tomatoes, the film has an overall approval rating from critics of 72% and an average score of 6.5/10. The website's critical consensus reads: "Though it doesn't approach the depth of the best animated films, Monsters Vs. Aliens has enough humor and special effects to entertain moviegoers of all ages".
  • Director Conrad Vernon provides creature vocal effects for Insectosaurus.
  • The movie actually made back its $175 million budget by earning a total of $381 million worldwide, which is more than twice the amount, and enough to produce a sequel.
  • Many fans have been demanding a sequel for the past decade. Ever since Dreamworks Animation was bought by Comcast in 2016, the company has been restructuring the movies' slates throughout the years. Some sequels were either cancelled, pushed, or put on a temporary hiatus (ex. Madagascar 4, Shrek 5). The Croods 2 (2020) for example, was cancelled on November 2016, but a year later, Dreamworks puts it back on production with a new 2020 release date. Pixar's Incredibles 2 (2018) was released fourteen years after it's predecessor. This would mean that there might be a chance that the film will eventually get a sequel in the future.
  • B.O.B. appears in the video game, DreamWorks Super Star Kartz (2011), as a playable character and is voiced by Dave B. Mitchell.
  • There are a few scenes that were not featured in the film, but are storyboarded as deleted scenes in film's DVD releases. Some of these scenes include: Dr. Cockroach, The Missing Link, B.O.B., and General Monger plotting to fight off Gallaxhar's clones to reach a Robot Probe to fly it back to Gallaxhar's ship and rescue Susan. Another scene is in the Situation Room where the President and his advisors call General Monger and convince him to return the monsters to the base due to the trail of destruction left in San Francisco.
  • B.O.B. has 12,000 bubbles inside him.
  • Hugh Laurie was chosen as the voice for Dr. Cockroach Ph.D. when Dave Burgess animated a test of him accepting his Emmy award.
  • Originally, Gallaxhar was called Galacticon and was to be a woman. It was changed to a male after learning that Madagascar: Escape 2 Africa (2008) (released 6 months earlier) had a female villain as well and production didn't want to be redundant.
  • Originally, Susan finished the movie back at normal size. It was decided after a screening that it was more fun and satisfying to keep Susan with her super powers and part of the monster team.
  • If the film was rendered on one computer, it would have taken 4,071 years to render.
  • Including voice actors, 601 (580 crew, 9 post, 12 cast) different people put over 20,466 manweeks into the film. That's 102,330 mandays or 920,970 manhours.
  • It took a total of 500 artists to create the film (the total crew number minus production staff and voice talent). The film was in production for approximately 4.3 years (from January 2005 to Spring 2009).
  • The movie was originally titled "Rex Havoc", after a lead character that was ultimately cut from the film. After that, "Creature Feature" was the working title before finally landing on "Monsters vs. Aliens."
  • The first 2 completed scenes in story were FIRST CONTACT and WAR ROOM. These scenes changed very little from the first pitch to the final version. The fight in the end of the movie evolved the most during the course of production.
  • The crew used 4 different types of 3D glasses throughout the production.
  • Director Conrad Vernon voices Mason the chimp in the "Madagascar" films and the Gingerbread Man in the "Shrek" films.
  • Global stereoscopic supervisor Phil McNally is often referred to as 'Captain 3D.'
  • Gallaxhar's facial features were modeled after Dreamworks Animation's CEO, Jeffrey Katzenberg.
  • In the opening scene with the two technicians discovering the meteorite, one of them (Technician Ben) plays with a paddle ball, a nod to the gimmick in House of Wax (1953).
  • When Gallaxhar is sending his message all over the world, at one point he says "You should in no way take any of this personally, it's just business", a reference to The Godfather (1972).
  • Dr. Cockroach dancing in sync with the lighted pads is a reference to the arcade game, Dance Dance Revolution (1998), in which you do the same thing, only in sync with the on-screen prompts.
  • When the monsters land on San Francisco, Link refers to the warm weather as "a convenient truth", a reference to An Inconvenient Truth (2006).
  • Gallaxhar refers to Earth as a 'mudball', the same saying used by Krang in the episode "Hot-Rodding Teenagers from Dimension X" from the TV series, Teenage Mutant Ninja Turtles (1987).
  • At 350 feet, Insectosaurus is 20 feet taller than Godzilla in Godzilla: Final Wars (2004), but is 5 feet shorter than Legendary Studios' version from Godzilla (2014), who stands 355 feet (108 meters) tall and is known to be the largest american incarnation of the monster in history.
  • The song that plays when The Missing Link turns on the radio is 'Wooly Bully' by Sam the Sham and the Pharoahs. The song is also featured in the short film, B.O.B.'s Big Break (2009).
  • Susan (Ginormica) and B.O.B. are considered as the most popular and lovable characters in the film.
  • The army commander who screams to his soldiers to destroy the Robot Probe by order of the President is voiced by Chris Miller, who also voiced the penguin Kowalski in the Madagascar franchise.
  • Gallaxhar's computer is voiced by Amy Phoeler, who is the wife of Will Arnett, who voices The Missing Link.
  • Susan aka Ginormica and Dr. Cockroach Ph.D. highly resemble their respective voice actors, Reese Witherspoon and Hugh Laurie.
  • This is Reese Witherpsoon's and Paul Rudd's first collaboration together. They worked together again in How Do You Know (2010), in which they also play a couple.
  • Although not mentioned in the film, Dr. Cockroach has a four digit IQ.
  • Derek is Susan's fiance, who turned into a giant. His voice actor, Paul Rudd, plays the superhero Ant-Man aka Giant Man in the Marvel Cinematic Universe.
  • Throughout the whole movie, Susan never throws a single punch to her enemies, but at random objects.
  • At the beginning of the movie, Derek mentions that he is auditioning for an anchor role for the Fresno market, and is excited to be going to a top 50 market. At the time of the movie's release, Modesto was part of the Sacramento-Stockton-Modesto DMA, which is a #20 DMA, while Fresno is a #55 DMA. So, Derek would have been auditioning for a role in a smaller market.
  • The list of songs in the closing credits includes, "Here Comes the Bride - Traditional". In fact, the title is "Bridal Chorus", and was written by composer Richard Wagner for the opera "Lohengrin".
  • Gallaxhar resembles the aliens in Independence Day (1996), in which they have a big oblong-shaped head, with over a dozen tentacles in their backs, but Gallaxhar has tentacles for legs.
  • Gallaxhar's mothership contains over three hundred Robot Probes (one hundred in each bay).
  • Kaitlin Olson were considered for the role of Susan Murphy/Ginormica.
  • Lewis Black were considered for the role of B.O.B.
  • Jason Segel were considered for the role of Dr. Cockroach PhD.
  • Donal Logue were considered for the role of The Missing Link.
  • Ciar?n Hinds were considered for the role of Gallaxhar.
  • Kevin Spacey were considered for the role of President Hathaway.
  • Jimmy Fallon were considered for the role of Derek Diet.
  • David Koechner were considered for the role of Carl Murphy.
  • Constance Marie were considered for the role of Wendy Murphy.
  • Jon Heder were considered for the role of B.O.B.
  • George Lopez were considered for the role of The Missing Link.
  • Peter Bartlett were considered for the role of Gallaxhar.
  • Jeff Garlin was considered for the role of B.O.B.
  • Diedrich Bader was considered the role of The Missing Link. He would later voice the character in the 2013 Nickelodeon TV series.
  • Reese Witherspoon says that she would love to reprise her role as Susan Murphy aka Ginormica for a sequel, unless Dreamworks Animation agrees to helm it.
  • B.O.B. was captured in the year 1958. This is a reference to the year his inspiration, The Blob (1958), was released.
  • The song 'Purple People Eater' by Sheb Wooley could be referencing the Robot Probe (horned, one eyed, and purple in color, but it actually never eats people).
  • Susan (Ginormica) weighs 50,000 pounds (25 tons), a reference to her original alias in the film's early stages of production.
  • Despite being a giant, Susan's hands and feet are proportionally smaller than an average man.
  • When the President plays the Close Encounters of the Third Kind (1977) motif on the synth, he's playing in the key of C, but the music heard is in the key of F. This is a unsynchronized audio error.
  • The original reason for Gallaxhar's invasion of Earth was to take all of the oil and natural resources.
  • There are 30 sequences in the movie.
  • Character designer Devin Crane, who designed Susan, says "Susan was meant to look like a 1940's scarlet with those big Bette Davis eyes. Her features are extreme, but she is still pretty."
  • When creating B.O.B., art director Scott Willis mentions that "B.O.B. is a gelatinous mass, but he is a very real gelatinous mass. You can see through him; you can see his interior bubbles. We wanted him to be as convincing as possible."
  • The film was originally scheduled to be released on May 15th, 2009, but soon it was pushed up to March 27th.
  • When B.O.B. was born, he is already in his adult size, but in the short film, Night of the Living Carrots (2011), he is seen as an infant in a flashback.
  • Reese Witherspoon's second highest grossing film, after Sing (2016).
  • The alien saucer in the Dreamworks intro is from Earth vs. the Flying Saucers (1956).
  • Director Conrad Vernon voices a total of five characters in the film (six if you include his vocalizations for Insectosaurus).
  • The base (Area 5?) is actually located somewhere in Las Vegas, Nevada, which is the same location where Area 51 is. Some fans even call the base 'Area 52' as a working name.
  • There are two women (Susan and Insectosaurus) and three men (The Missing Link, Dr. Cockroach Ph.D., and B.O.B.) in the team.
  • The TV special, Monsters vs Aliens: Mutant Pumpkins from Outer Space (2009), is the closest to having a sequel for this film.
  • Seth Rogen's friends, Michael Cera and Jonah Hill, were considered to voice B.O.B.
  • With an opening weekend earning of $59.3 million, and a domestic gross of $192 million, this is the eleventh highest grossing 'alien invasion' film.
  • Director Conrad Vernon, Tom McGrath, Chris Miller, Mike Mitchell and Stephen Kearin have all appeared in the Shrek and Madagascar franchises.
  • In the beginning, Susan gets shot with a sedative, just like how Lt. Col. Glenn Manning was injected with a giant syringe in The Amazing Colossal Man (1957).
  • B.O.B. says 'no way she's a boy, look at his boobies' when he sees Susan, reversing the accusation 'she isn't a boy, look at her boobies' from Shakespeare in Love (1998).
  • The film was a subject of a $2,000 question in Who Wants to Be a Millionaire? (2002).
  • Video clips of the film were shown in 'The Greatest 3D Moments' (2009).
  • This is director Rob Letterman's second Dreamworks Animation movie, after Shark Tale (2004).
  • The train that Dr. Cockroach, The Missing Link, and B.O.B. ride on in San Francisco is called "Castro".
  • Susan bears a strong resemblance to Reese Witherspoon at the age of 20.
  • Ginormica obviously comes from the word ginormous.
  • Originally, there was another heroic character in the film called "Rex", a super android who joins the monsters and battle the aliens to save the world. However, he was ultimately cut from the film when the writers decided to make the "50,000 pound Woman" the new main protagonist, in which they renamed her as Ginormica (Susan).
  • In the original Rex Havoc novel, The Missing Link was never a part of the team, because he didn't even exist.
  • Dr. Cockroach and Insectosaurus are the only characters from the Rex Havoc novel to keep their original names. Susan (Ginormica) was supposed to be called the "50,000 pound Woman" and B.O.B. was supposed to called "Ick!".
  • The film has been in development since 2002, when Dreamworks Animation acquired the rights to the Rex Havoc novel. About three years later, Conrad Vernon and Rob Letterman were hired to create and start the story from Scratch. The film was then finished during early 2009, which would mean that it took almost five years to create the movie, from pre-production to post.
  • Fans nowadays would often compare Gallaxhar to the villain-turned-superhero alien, Megamind, from Megamind (2010), another Dreamworks movie, due to their similar colour schemes. They would also declare both of them as "distant relatives" or "cousins".
  • Jacqueline Bracamontes supplied the voice of Susan in the Spanish language version.
  • The last DreamWorks Animation's original full-length feature film of the 2000s.

Spoilers

  • WILHELM SCREAM: When B.O.B. (Seth Rogen) throws the last Gallaxhar clone to the floor far down below when he meets up with the other main monsters during the spacecraft invasion.
  • In the scene during the closing credits, the President asks the audience if anyone wants to freeze his head. Stephen Colbert, who provided the voice of the President, gives detailed outlines on how to unfreeze his head in an apocalyptic future in his book, "I Am America and So Can You".
  • LOGO GIMMICK: The "DreamWorks Animation SKG" logo is in black and white, and the fisher boy gets sucked up by a U.F.O., and the screen vibrates after that, and the screen rips off to the galaxy.
  • After Insectasaurus becomes a butterfly, and is getting ready to fly to Paris, it is wearing lipstick, hinting that it is female.
  • In the film, old footage of Insectosaurus shows him attacking Tokyo. This is similar to what Godzilla did in the original 1954 film.
  • Susan is the strongest monster in the group, as she is seen holding off the Robot Probe's giant hand, and singlehandedly pulling down the Robot with the cables of the Golden Gate Bridge.
  • During the fight in the Golden Gate Bridge, Insectosaurus and the Robot Probe didn't throw a single punch to each other. Instead, both of them fight by hitting each other's eyes: Insectosaurus blinds the Robot with his silk, and later on the Robot shines it's light to Insectosaurus' eyes to hypnotize him, although it was unintentional.
  • The base in which the monsters stay in hasn't had it's name revealed yet, or sometimes called "Area Fifty-Something". In the large situation room, an advisor was shot with a sedative to stop him from mentioning the name.
  • Susan falls down five times in the movie: First, in her wedding when she gets shot with the sedative. Second, when she turns to the right side of her bed, thinking there was an alarm clock; third, when she steps on B.O.B.; fourth, when she starts to run away from the Robot Probe; and fifth, when she trips over a car.
  • At one point, Dr. Cockroach asks Susan if she has any "Uranium" in her. Uranium is a radioactive element used by the military to create and power up nuclear missiles and atomic bombs.
  • A soundtrack from Clash of the Titans (1981) can be heard when Susan pulls the cables of the Golden Gate Bridge.
  • When Susan chases Gallaxhar through the ship, doors start to close as she runs and breaks through them, a reference to Alien (1979).
  • When Insectosaurus looks at bright lights, his pupils enlarge and follows the direction of that light, similar to how the T-Rex follows the flares held by Dr. Alan Grant and Ian Malcolm in Jurassic Park (1993).
  • Gallaxhar's ship explodes in a similar way to how the mothership exploded in Independence Day (1996). Although, Gallaxhar's ship exploded via self destruction mode, while the mothership exploded from a nuclear missile.
  • Susan uses cars as skating shoes when escaping the Robot Probe. This is a reference to Transformers (2007), when Bonecrusher, a decepticon who has wheels for feet, skates through the highway.
  • Insectosaurus is the only monster who can't speak; he only growls and roars.
  • When Susan grows into a giant, her wedding dress starts to tear, exposing bare arms and legs, making her resemble Nancy Archer in the poster of Attack of the 50 Foot Woman (1958).
  • The food served in Susan's table is oatmeal.
  • The film has several plot points similar to that of Rise of the Guardians (2012). The protagonist becomes different through no means of his or her own and their hair turns white as a side effect. What caused them to be different was presumably painful. (Jack fell into an ice cold lake and Susan was hit by a meteorite containing quantonium). After becoming different, they have no means of communication with the outside world. (No one believes in Jack Frost and Susan is locked away in a top secret facility). They must fight alongside other different individuals to defeat a deranged antagonist that wants things to go his way (Gallaxhar and Pitch Black). It is implied that a member of the team dies, (Insectosaurus and Sand Man) but they come back in the end proven alive.
  • The Missing Link (Will Arnett) is the only monster who can understand what Insectosaurus is saying.
  • B.O.B. says "I haven't been outside for 50 years", this would mean that he, Dr. Cockroach, The Missing Link, and Insectosaurus have been in the base for that long.
  • Near the ending, although Link says "You're a butterfly!" to Insectosaurus (renamed Butterflyosaurus), she actually resembles a moth, which has feathery antennae, rather than a butterfly which has straight ones with knobbed ends.
  • At one point, Gallaxhar yells out "Destroy all monsters!" to his clones when he sees Susan, Dr. Cockroach, The Missing Link, and B.O.B., a reference to Kaijû sôshingeki (Destroy All Monsters) (1968).
  • When the monsters leave the main power core chamber, B.O.B. forms a 'water' tentacle abyss style to let them slide down. This is a reference to The Abyss (1989).
  • Dr. Cockroach says that Invisible Man died of a heart attack 25 years ago. The movie takes place in 2008, meaning that he died in 1983.
  • When Gallaxhar's computer is panning the location of Earth, it shows the Milky Way, and zooms near the center; actually, the solar system is a lot farther from the center, nearing the edge.
  • At one point, there is a cyclops vs. cyclops moment between B.O.B. and the Robot Probe, although B.O.B. doesn't really fight as the Robot stomps on him.
  • In the beginning, when the president is walking up the stairs to the robot, a camera view shows that no one is on the stairs with him. When the president gets toward the top a man gives him a cup of water. A second later he is gone.
  • When human-height Susan is skiing up the hallway through the holes she made in the doors as Ginormica, she is more than half the height of the holes instead of roughly 1/10 as was established in the church scene. This is a common sizing alteration called 'mass shifting' where giant characters vary in size in some scenes of a certain film.
  • Gallaxhar says 'aliens... destroy the monsters'. Well he called his minions 'clones' , and although the 'monsters' might be monsters to both the earthlings and Gallaxhar's guys, he wouldn't call his own clones 'aliens'.....the monsters were the aliens to him.
  • After the President watches Gallaxhar's message, he says "set the terror level at code brown, 'cause I need to change my pants", indicating that he pooped himself.
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