Kimiko "Kimi" Watanabe-Finster is Chuckie Finster's adorable and tomboyishly beautiful stepsister in Rugrats and its spin-off All Grown Up! She became one of the main characters of Rugrats in its seventh season, after her mother, Kira, married Chuckie's father, Chas, in the series' second theatrical film, Rugrats in Paris. Like Tommy Pickles, Kimi is super adventurous and is always ready with a smile and an encouraging word. She teaches Chuckie what it means to be a true big brother and helps him manage his fears.