Freddie Femur's wife, Casey, is an aerobics instructor with a "perfect tan and tennis ball boobs", according to Francine. Outwardly, she's perky and cute, quite the cheerleader, but it's clear this is only because it's what she thinks men want. She's lately infatuated with David, who is the nice guy she once thought was a creature of myth.

Like all SiP characters, she's very human, with as many imperfections as any other human.