The Upside-Down Girl is a background character in the Recess series. The Upside-Down Girl has no defined personality. However, it has been confirmed that she has become impervious to nausea from the many times she hung from her bar. It is possible that she is violent when angry as seen when she warned T.J. that he'd be sorry if she got off her bar. She is almost always seen hanging upside down, the only time she is seen right side up is in "The Game" where said game manages to enamour her to that point.
As a result of always hanging upside down, her blond pigtails always stick up, even on the rare occasion that she is right side up. She wears a one piece white outer-garment with short sleeves and pant legs, and a pink dress over it with the skirt always stuck up. Her real name was Katie Gunderson.
Father: Eric Gunderson
Mother: Laura Gunderson
Friends: TJ Detweiler, Vince LaSSao, Ashley Spinelli, Gretchen Grundler, Mikey Blumberg, Gus Griswald, Randall Weems, Menlo, Miss Finster, Principal Prickly, Miss Grotke, the Ashleys, Scribe Kid, Jordan and Jerome, King Bob and other good Third Street School students
Enemies: Earwin Lawson, Gelman, Conrad Mundy, Greg Skeens, Sue Bob Murphy, Lazy Kid, Chucko Kowalski, Jocko, Buster, Cheay, Koreo and Kurst the Worst
Likes: Hanging upside-down and keeping her money and other stuff in her socks so they don't fall off.
Dislikes: Getting bothered while hanging upside-down, troublemakers causing trouble (mainly Lawson) and being framed by troublemakers