A new Monsters Inc fan theory could change everything you thought you knew about the Pixar film's ending... A new theory about what happened to Boo in Monsters Inc is doing the rounds, and it actually ...

Let’s get the big, blue, furry monster in the room out of the way first: Boo from Monster’s Inc. is a cartoon. So there is no “grown up” version of Boo -- at least not until Monster’s Inc. 4 ...