Mary Gibbs as Boo - Monsters Inc (1991) Fan Cast | myCast.io
Mary Gibbs
Age: 29
female
Mary Morgan Gibbs (born October 5, 1996) is an American voice actress. She is known for voicing the human toddler Boo in the Pixar animated film Monsters, Inc..
In order to power the city, monsters have to scare children so that they scream. However, the children are toxic to the monsters, and after a child gets through, two monsters realize things may not be what they think.
