Boo

"Mike Wazowski!!! Busy! Busy!"

 is a character released with, and is a part of the Monsters, Inc. character collection.

About
Mary Gibbs, better known as , is the tritagonist in Disney/Pixar's 2001 animated film, Monsters, Inc.

is a three-year-old girl who is curious and naive. Most of her speech consists of babbling and one word utterances. The only actual words she says in the film are "!", "Kitty!" and "Mike Wazowski!". is unafraid of any monster except Randall, the scarer assigned to her door. She believes Sulley is a large cat and refers to him as "Kitty".

The book based on the film gives 's "real" name as Mary Gibbs, the name of her voice actress. In the film, one of 's drawings is covered with the name "Mary".

Boo is also a smart and intelligent little girl