Each of the main five characters are modeled after classic movie monsters.[1]
Susan Murphy (voiced byReese Witherspoon in the film and special, andRiki Lindhome in theTV series), also known in the movie by her monster nameGinormica was once a normal woman. She was later hit by a radioactive meteorite on her wedding day, causing her to grow into a 49 foot 11 inch tall white-hairedGiantess. In addition to her size, she is particularly strong, physically impervious, and has a resistance to energy attacks. She serves as the film's central character and appears in the Halloween specialMonsters vs. Aliens: Mutant Pumpkins from Outer Space. She makes a cameo in a cliffhanger at the beginning ofNight of the Living Carrots. She is inspired by the protagonist ofAttack of the 50-Foot Woman.[1] In the television series, she gained the ability to switch between her giant and normal sizes by growing and shrinking similar toUltraman in theUltra Series.
B.O.B. (Benzoate Ostylezene Bicarbonate) (voiced bySeth Rogen in the film,Chip 'n Dale: Rescue Rangers and specials,Dave B. Mitchell inMadagascar Kartz andEric Edelstein in the TV series) is an indestructible gelatinous mass. He was created when a genetically altered tomato was injected with a chemically altered ranch dessert topping, the resulting goo gained some form of consciousness. Despite being sentient, he literally and figuratively lacks a brain, and is the main comic relief character. His greatest strength lies in his ability to digest any substance. In the video game, B.O.B.'s gameplay does not require his arms, and so he lacks them altogether. It is revealed in "Night of the Living Carrots" that he had a fear of carrots due to being force-fed carrot purée in his youth, and at the end of the short was turned into a giant, zombie carrot. He is inspired byThe Blob andThe Crawling Eye.[1]
The Missing Link (voiced byWill Arnett in the film, video game,B.O.B.'s Big Break, andMutant Pumpkins from Outer Space,David Kaye inNight of the Living Carrots andDiedrich Bader in the TV series) is a 20,000-year-oldfish-ape hybrid who was found frozen and thawed out, only to escape and wreak havoc at his old lagoon habitat. He behaves as amachojock most of the time, but is out of shape. He is an expert martial-artist and leads the team in attacks. According to director Conrad Vernon, although Link bears an obvious resemblance toCreature from the Black Lagoon, “Link really just represents anything prehistoric that comes back to life and terrorizes people".[1]
Insectosaurus (often referred to as "Insecto") is a 1 inch (25 mm)grub that was transformed by nuclear radiation into a 350 foot (106.7 m) tall insectoidkaiju with the ability to shoot silk out of her nose. She is a giant monstersilkworm who cannot speak clearly, and is mesmerized by bright lights (usually used to lead her to other locations). For the longest time, Link thought Insectosaurus was a male, but after her emergence from a cocoon, it was discovered she was actually a female. Link can clearly understand what Insectosaurus is saying. As Butterflyosaurus, she has wings, can fly, and becomes the Monsters' mode of transportation. Her characteristics are similar to the giant creature inThe Angry Red Planet, andMothra.
The aliens and alien robots from the movie and TV show are listed here.
Gallaxhar (voiced byRainn Wilson) is an evil alien overlord who hopes to take over Earth.
Gallaxhar's Computer (voiced byAmy Poehler) is a user-friendly computer that follows his orders.[citation needed]
Artificially intelligent robots onboard Gallaxhar's ship sent to Earth after the quantoinum was detected.[citation needed]
TheMutant Pumpkins are the antagonists ofMutant Pumpkins from Outer Space. They were created by an unknown alien that saturated Farmer Jeb's pumpkin patch with a green mutagenic substance.[citation needed]
TheZombie Carrots are the antagonists ofNight of the Living Carrots. Created when Link absentmindedly scares a surviving pumpkin that was standing over a carrot patch in the garden of Ginormica's parents' home, causing a carrot to absorb the same green goo that mutated the pumpkins and turn into a zombie carrot.[citation needed]
Sqweep's Teacher is a minor character seen on a few episodes.[citation needed]
Pip is Sqweep's financial planner, working for Epsilon-11 Allowance Management. He is the same species as Sqweep in dark blue. He came to Earth to collect payment after the monsters and Coverton spent a large amount of money from Sqweep's piggy bank account.[citation needed]
Cuddle Bear is an aggressive plushy that appears in "The Toy from Another World".[citation needed]
Leprechaun is a small luck granting indestructible alien known as a Leprechonian that has anger-management issues. It was originally believed by Monger, Coverton, and the other monsters to be classified as a monster which Link uses to gain good luck.[citation needed]
Coverton (voiced byJeff Bennett) is a psychokinetic alien who is the main antagonist of the TV series that uses a floating chair for transportation. He is the team leader of Team Alien.[citation needed]
Coverlord (orGrand Coverlord) is the true main antagonist of the television series, who wishes to take over Earth. He sends Coverton to Earth. Coverlord is seen as a mute, faceless, green cloud.[citation needed]
Sqweep (voiced byHaley Tju) is an adorable, intelligent alien child who has come to Earth to write a report on Earth's dominant species for school.[citation needed]
Sta'abi (voiced byGillian Jacobs) is a hotheaded female alien from a warrior/hunting culture and Link's love interest. Highly aggressive and quick to take matters into her own hands, she is offended by apologies and answers best to aggression.[citation needed] She also fails to understand certain Earth customs, such as emotions.[citation needed]
A rambunctious semi-sentient alien,Vornicarn hatched on Earth and briefly incubated inside Link's nose before emerging, rampaging around Area Fifty-Something until Sta'abi captured and tamed him to be her loyal hunting companion.[citation needed]
When the monsters are watching a horror film calledAttack of the Zombie Moon Ape, Sqweep watches it in secret to gain extra credit. Becoming sleep-deprived because of it, Sqweep invents a memory extractor to extract the memory of theMoon Ape, which escapes into reality where it terrorizes Area fifty-Something.[citation needed]
General Warren R. Monger (voiced byKiefer Sutherland in the film,Fred Tatasciore in the video game andKevin Michael Richardson in the TV series) is a military leader who runs a top secret facility where monsters are kept. He plans to fight the invading aliens with the imprisoned monsters.[citation needed]
Derek Dietl (voiced byPaul Rudd in the film andNolan North in the TV series) is a localweatherman and Susan's ex-fiancé. He jumps at whatever opportunity he has to boost his career.[citation needed]
Carl Murphy (voiced byJeffrey Tambor) is Susan's father.
Wendy Murphy (voiced byJulie White) is Susan's mother.
