Kiki is introduced as an off-screen character in season 5, Korsak's "life coach" who encourages him to both look into retirement and also explore the possibility of becoming a lieutenant, in Doomsday. In Bridge to Tomorrow, Korsak says that he is buying the Dirty Robber as a result of Kiki's coaching. Also in that episode, Jane comments that Kiki must be very special; when Korask notes that Kiki has a strict rule against getting involved with clients, Jane suggests that he fire her.
During In Plain View, Korsak is working to improve his vocabulary at Kiki's suggestion.
Later, she is married to Vince Korsak.