List of Monsters vs. Aliens characters  This is a list of characters from the movie "Monsters vs. Aliens" and other spin-off related. Each of the main five characters are modeled after classic movie monsters. Susan Murphy, also called "Ginormica", (voiced by Reese Witherspoon in films, Riki Lindhome in the TV series) is a normal woman who is hit by a radioactive meteorite on her wedding day, causing her to mutate and grow to a height of . In addition to her size, she is amazingly strong and has a resistance to energy attacks. She serves as the film's central character. She appears in the Halloween special . She makes a cameo in a cliffhanger at the beginning of "Night of the Living Carrots". She is based on the protagonist from Attack of the 50 Foot Woman. B.O.B. (Benzoate Ostylezene Bicarbonate) (voiced by Seth Rogen in the film and specials, Dave B. Mitchell in "Madagascar Kartz", Eric Edelstein in the TV series) is an indestructible gelatinous mass created when a genetically-altered tomato was injected with a chemically-altered ranch dessert topping, the resulting goo gaining some form of consciousness. His greatest strength lies in his ability to digest any substance and being indestructible. His one weakness is that his mutation did not give him a brain. In the video game, B.O.B. has no arms. It is revealed in "Night of the Living Carrots" that he had a fear of carrots due to being force-fed carrot puree in his youth and at the end of the short was turned into a giant, zombie carrot. He is based on The Blob. Cockroach Ph.D (voiced by Hugh Laurie in the film, "B.O.B.'s Big Break" and "", James Horan in "Night of the Living Carrots" and video game, Chris O'Dowd in the TV series) is a brilliant but mad scientist who built a pod-like invention to give humans the survival abilities of a cockroach, experimenting on himself, and now has a giant cockroach's head, the ability to climb up walls, and high resistance to physical damage. He has a tendency to eat garbage and laugh maniacally. He is based on The Fly. The Missing Link (voiced by Will Arnett in the film, video game, "B.O.B.'s Big Break", and "Mutant Pumpkins from Outer Space", David Kaye in "Night of the Living Carrots", Diedrich Bader in the TV series) is a 20,000-year-old fish-ape hybrid who was found frozen and thawed out, only to escape and wreak havoc at his old lagoon habitat.