John Goodman as James P. "Sulley" Sullivan, a large furry blue monster with horns and purple spots. Even though he excels at scaring children, he is kind-hearted and thoughtful by nature.
Billy Crystal as Michael "Mike" Wazowski, a green creature with a ball-shaped body, a single large eyeball, and skinny arms and legs. He runs Sully's station on the scare floor, and they are close friends. Mike has an outgoing personality and is dating Celia Mae. He makes cameo appearances in Finding Nemo, Cars, WALL-E and Toy Story 3.
Mary Gibbs as "Boo", a 2-year-old human girl. She is unafraid of any monster except Randall, who regularly scared her from her closet. She has overcome her fear of Randall by the end of the movie. The book based on the film gives Boo's "real" name as Mary Gibbs, the name of her voice actress. In the film, Boo shows Sulley a drawing of Randall with her name "Mary" in a corner.
Steve Buscemi as Randall Boggs, a multi-legged lizard-shaped monster with a chameleon-like ability to change skin color and become invisible. He is Sulley's rival in scream collection.
James Coburn as Henry J. Waternoose III, a crab-like monster with many eyes. At the start of the film, he is CEO of Monsters, Inc, the job having been in his blue-blood family for generations. This was James Coburn's last role in an animated work.
Jennifer Tilly as Celia Mae, a Medusa-like monster with snakes for hair. She is Mike's girlfriend and the receptionist for Monsters, Inc..
Bob Peterson as Roz, a slug-like monster whose voice sounds like Selma Diamond. She is the administrative clerk for Scare floor F. At the end of the film she turns out to be the Child Detection Agency's (CDA) "Number One", working undercover for years to reveal the child kidnap plot.
John Ratzenberger as the Abominable Snowman, a yeti banished to the Himalayas.
Frank Oz as the three-eyed Fungus, Randal's assistant and reluctant participant in the plot.
Dan Gerson as Needleman and Smitty, two goofy monsters with cracking voices who work as janitors and operate the door shredder when required.
Bonnie Hunt as Ms. Flint, a snake-like monster who trains new monsters to scare children.
If I know my stuff (and believe me I'm monsters Inc's #1 fan), then yes .
There is no lion in Monsters, Inc.
KIDS can kill monsters!
John Goodman did the voice of Sulley in Monsters, Inc.
They are making a monsters inc 2 right now, it is supposed to be coming out November 2, 2012.
There will not be a Monsters Inc. 2. However, there is a Monsters Inc. prequel entitled "Monsters University".
If I know my stuff (and believe me I'm monsters Inc's #1 fan), then yes .
There is no lion in Monsters, Inc.
Shouldn't there be a Monsters Inc. II first?
There will be a Monsters Inc 2, it is supposed to be coming out June 21st, 2013, the movie will not be called Monsters Inc 2, it will be called Monsters University.
KIDS can kill monsters!
Monsters Inc came out in the theatres in 2001
the monsters inc. is on big nate island to the left
John Goodman did the voice of Sulley in Monsters, Inc.
They are making a monsters inc 2 right now, it is supposed to be coming out November 2, 2012.
There will be a Monsters Inc 2, it is supposed to be coming out on November 2, 2012
Frank Oz did the voice of Fungus in Monsters, Inc.