Purely History on Instagram: "The voice of Boo in Monsters, Inc. (2001) was performed by Mary Gibbs, who was only around 2 years old during recording. Since she was too young to read or follow a script, the Pixar team recorded her natural reactions while she played around the studio. They captured her laughter, babbling, and spontaneous chatter instead of formal dialogue. Editors then carefully stitched those moments together to create Boo’s lines, resulting in one of the most genuine child perf

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couples! 💫 on Instagram: "MY HEART 🥺 Disney offered a heartwarming look behind the scenes of how Boo’s voice was brought to life in Monsters, Inc., revealing that while the character originally had scripted lines, the team quickly realized Mary Gibbs was too young to sit still long enough to record them. Instead, Pixar followed her around with a microphone, capturing her spontaneous laughter and reactions — moments that ultimately defined Boo’s innocence and made her one of the most endearing