Karen McCormick

Karen McCmormick is the youngest of the family and is Kenny's younger sister and has only appeared as a background character in one episode, "Best Friends Forever". The only information we know about her is that she is called Karen by Matt Stone.

Appearance
She looks very similar to Heidi Turner hair and clothes wise. She has brown hair and wears a green jacket with a red collar. She also wears purple mittens. As in the scene where the McCormick family are at the fair, she appears to have either dirt or a bruise on both her cheeks and above her left eye.