Snubbull first appeared in Snubbull Snobbery in the possession of a rich woman named Madame Muchmoney, engaged to another Snubbull named Winthrop. She was not happy with her life of luxury, and preferred playing to pampering and Brock's rice balls to gourmet food. Ash and his friends helped Madame Muchmoney to realize this, and so she started making changes just for the sake of Snubbull's happiness.
However, Snubbull still felt something missing from her life, specifically Meowth's tail which she loves to bite down on. Thus, Snubbull ran away from home to follow Team Rocket. After this, she appeared in Grin to Win, Tricks of the Trade, and Tunnel Vision.
Her final appearance was in The Trouble With Snubbull, where she evolved into Granbull and returned to her owner, who had been searching for her since she first left.
