Katie also known as Chinna Papa (portrayed by Rivkah Reyes) is one of the students at Horace Green Prep School which Dewey Finn temporary teaches at during the film. Katie becomes a member of the band during the film where she plays bass guitar. She was originally a cellist. She is portrayed as a quiet, polite girl, but eagerly takes an interest in rock music. She was originally meant to have a solo scene during the credits, however jack black forgot his line to give her the cue.