Snowbell, sometimes called Snow, is the deuteragonist of the Stuart Little franchise. He is the Littles' pet house 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.
Snowbell is very protective of certain family members, mostly Stuart.
Snowbell is seen as a friendly, shy, and lovable coward. He often focuses first and foremost on his own needs and frequently gets in trouble as a result.
In Stuart Little, Snowbell despised Stuart at first and lunged to eat him shortly after he arrived at the Littles' house and looked at the pictures. This prompted Stuart's parents to yell at Snowbell and demand that he spit Stuart back out (to which he does), and Frederick picks Snowbell up and sternly tells him that he shouldn't eat Stuart.
- Snowbell is often thought to be the (former) main antagonist of Stuart Little and the tritagonist of Stuart Little 2.