Boo is one of the most loved characters from Monsters, Inc., and her charm feels so real because it actually is! Pixar turned a toddler’s natural giggles and random chatter into movie magic, giving Boo her unforgettable personality. Boo was played by Mary Gibbs, who was only two years old at the time of voicing her character counterpart for Monster’s Inc. Daughter of one of Pixar’s very own, animator and director Rob Gibbs, Mary functioned alongside her father as essential figures in the creatio