Balloon Girl

Balloon Girl is a student at Jerome Horwitz Elementary School. She only appears in Captain Underpants: The First Epic Movie.

Captain Underpants: The First Epic Movie
When Captain Underpants dresses up as Benjamin Krupp and builds a carnival, Balloon Girl buys a balloon from him. Once she holds the balloon, she floats away to the sky. She soon reappears, crying for help when Captain Underpants turns back into Mr. Krupp and yells at George Beard and Harold Hutchins.