Mary Gibbs is an American former child actress and voice actress who is best known for voicing Boo in the 2001 Disney / Pixar film, Monsters, Inc.. She also voiced Sha-Ron in Mulan II (2004). She is an actress, known for Monsters, Inc. (2001), Inside Out (2015) and …

Take a visual walk through her career and see 8 images of the characters she's voiced. Mary Gibbs (born in Pasadena, California in October 5th, 1996) is an American former child actress who performed the voice of Boo in Monsters, Inc.. She is also the daughter of Rob Gibbs, a story artist for Pixar. Mary Gibbs was born on October 5, 1996 in Pasadena, California, USA as Mary Jessica Gibbs. She is the daughter of storyboard artist Rob Gibbs. As of 2015, Monsters, Inc. is her only film voiceover, although outtakes of her … Mary Gibbs is a voice actress known for voicing Boo, and Kiara (Baby).