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", shares a kiss at Nationals Park in "Kiss Kiss, Cam Cam" and is seen at the mall in "The Devil Wears a Lapel Pin".
Katie is voiced by Sandra Oh.