Marvin is a dancing brown horse with a black mane and tail who performs in Fast-Talking Jack's carnival. He used to be in movies and on Broadway; his first big break was in the musical movie 43rd Street (a takeoff of 42nd Street), although he's not proud of his performance in it. His hooves are tuxedo-themed and they make the tapping noises. He also wears a red bowtie around his neck. In the beginning of one of the episodes, it is taken off.