Katie is the Asian core member of the Ladybugs in "Not Particularly Desperate Housewives". The Ladybugs are a group of women with "a fast lane lifestyle and slow motion walk" according to Francine. The group seems to be led by Christie White. 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.
Katie is always followed by an Asian musical cue, even when she farts in the episode.
Katie's character design is used as a CIA agent in "Stan Smith as Keanu Reeves as Stanny Utah in Point Breakers" & "Gift Me Liberty", as well as a student in this episode, shares a kiss at Nationals Park in "Kiss Kiss, Cam Cam" and is seen at the mall in "The Devil Wears a Lapel Pin".
She attends the CIA Awards in "Casino Normale" and joins the striking CIA office workers in "(You Gotta) Strike For Your Right". She is also present during the CIA briefing on Tommie Tokes contest in "Jeff and the Dank Ass Weed Factory".
She can also be seen walking the pier in "Lost Boys", at the beach in "Shark?!", observing the Overwatch tournament with Avery Bullock and other agents in "Brave N00b World" and attends Bullock's meeting in "Game Night".
Katie is voiced by Sandra Oh.