Katherine Parker is the stern president of Pan-Hellenic and a sister at Gamma Psi. Despite the rivalry between ZBZ and Gamma Psi, Katherine remains impartial in her duties. She initially clashes with Casey but she sees a lot of potential in her. Katherine and Rusty hit it off so well that Katherine wanted Rusty to take her virginity. Ultimately, Rusty declines her offer. Later she joins Casey and Evan at CRU Law, and hooks up with Beaver.