Theodore, an alternative identity of Theodore Seville, is the main protagonist in The Chipmunks Go to the Movies episode Bigger!
Appearance[]
He wears a green shirt that says "Fur Balls", exposing a tiny bit of midriff, blue pants, and white shoes.
Personality[]
At the beginning, he doesn't believe really Alvin grew up, this until he finds out after Alvin proved his identity. He doesn't like how Alvin slowly changes to an egoistic adult, but eventually, he forgives him.