Originally, Kira served as an assistant to Coco LaBouche, the evil woman in power in the theme park EuroReptar. Throughout the entire film, she was forced by Coco to do her bidding until she stood up to her in the end and saved Chaz.
She is Kimi's mother and Chuckie's step-mother. Married Chaz in Rugrats in Paris: The Movie. Operates the Java Lava Coffee House with her husband. She somewhat plays the straight woman to the rest of the adults' wackiness, but she enjoys showcasing and trying new things, as opposed to a lot of the rest of them. Kira is also Japanese and has similar qualities to Miss Honey from Matilda.