3rd Grade Female Rabbit (Number 3) is an unnamed Mighty Mountain student who made her debut in the episode "The Pride of Lakewood". It is assumed that she is a third grader because she takes part in third grade competitions with her cheer squad. She has been seen in a cheerleader uniform as part of the Mighty Mountain's squad at track and soccer games, and only speaks to yell cheers with the other girls. Not much is known about her besides this.