Snowbell is the antagonist of the book Stuart Little, an anti-hero and a (former) antagonist, later the deuteragonist of Stuart Little, the deuteragonist of Stuart Little 2, the tritagonist of Stuart Little: The Animated Series and the tritagonist of Stuart Little 3. He is the Littles' pet house Kilala-like cat and Stuart's best friend. Even though he initially hated having "a mouse for a master" in the first film, Stuart eventually grows on him to the point where they repeatedly risk their lives for each other. He is the former main henchman of Smokey and Frederick's advisor.