Casey is the redheaded core member of the Ladybugs in "Not Particularly Desperate Housewives". The Ladybugs are a group of women "a fast lane lifestyle and slow motion walk" according to Francine. The group seems to be led by Christie White. During Not Particularly Desperate Housewives, Francine tries to join the group but is rebuffed until a misunderstanding causes them to believe Francine is having an affair with the valet. They reveal to Francine the true nature of their organization: they cheat on their husbands. Francine receives a ladybug brooch and tries to maintain the fiction of her affair with the valet.
When we first see Casey walk in with the other core members of the Ladybugs she is wearing the same blue cardigan as in the picture. But when the camera has a close up, Casey is wearing a periwinkle vest, contradicting the earlier apparel. Then after the close up, she is seen, yet again, in the blue cardigan. This same matter happens in "1600 Candles" when Francine pays a visit to the CIA lab for an anti growth serum. Her necklace disappears for several seconds then reappears before she leaves.
Casey also appears in cameo roles in "Stanny Slickers 2: The Legend of Ollie's Gold", "G-String Circus", and "May the Best Stan Win". She also appears in the audience in "Phantom of the Telethon" and cheers on Tank Bates at FedExField in "Daddy Queerest".
She has a crowd scene cameo in "100 A.D." where she dies in the bus crash.
A hologram of Casey dines with Katie when Avery Bullock demonstrates the new CIA hologramdeck in "I Ain’t No Holodeck Boy".
Casey shares a kiss at Nationals Park in "Kiss Kiss, Cam Cam" and attends Meredith Fields charity gala in "The Dentist's Wife".
She can be seen on Roger's final flight in "Whole Slotta Love" and in the Morning Mimosa audience in "Shell Game". She is also seen working at the TV Guide building in "Rabbit Ears".
Casey is voiced by Paget Brewster