Morton

Morton Plays Nick in Animal Run and Animal Run (CartoonNetworkandHasbroFan360 Style)
He is a mouse.

Morton Plays Fagin's Squirrel in Squeaky and Company (Thomas O'Malley's Toon version)
He is a squirrel.

Morton Plays The Easter Bunny in The Nightmare Before Christmas (Thomas O'Malley's Anime version)
He is a cute easter bunny.