Gina's first appearance is in "Let's Go to the Hop", when Meg finds her doing "Toad" behind the school with Connie and others. She is seen later in the episode bullying Meg for not doing Toad.
She is seen again in "And the Wiener is..." as a cheerleader, when she, Connie, and others taunt Meg. She is seen later in the episode at Connie's birthday party. In "A Fish out of Water", she is seen at Spring Break with Connie and their friends. Gina is also seen many times in other episodes, mostly likely with Connie when she's humiliating Meg. She is also in other episodes in the background such as "Barely Legal" and "Peter's Daughter". It's revealed in "McStroke" that she has a MySpace page.
In "Stew-Roids", where she is called Gina for the first time, she is seen wearing a different outfit rather than the usual tanktop and striped pants.