Liza is first seen during the Whole Foods montage in the episode "The City Part of Town".
In "You're Not Yelping", Liza is new at South Park Elementary, and is shown around by Wendy Testaburger. Wendy helps her get acquainted with the school, it's facilities, and it's students. In the cafeteria, Wendy introduces her to the other girls.
Liza wears a black skirt, a green long-sleeve shirt, and black shoes. She has black hair that is tied in a ponytail.