Nancy is a one time character in the animated series South Park and appeared in the Season 8 episode, "Up the Down Steroid" as Jimmy Valmer's new girlfriend.
Appearance
Nancy had short black hair, held back with a teal headband, and dressed in a more 'mature' manner than the other girls, wearing makeup and a navel ring, (unusual for her young age), as well as a midriff-baring black shirt with yellow stripes running down the sleeves, and a pair of teal pants (also with yellow stripes).
Relationships
Jimmy
Nancy was Jimmy's girlfriend in "Up the Down Steroid", they met in a free period at school, and they got on quite well as boyfriend/girlfriend even after Jimmy beat her up. Despite this she still rooted for Jimmy at the games.
To date she has only made one appearance in "Up the Down Steroid".