Unnamed narrator
The unnamed narrator is not specified by gender. Only the arms of the narrator are revealed in the story as they use their hands to point out instructions to Marvin K. Mooney. The narrator is urging Marvin to leave in various ways, such “on skates, on skis”, just as long as he leaves.
Marvin K. Mooney
He is a typical Seussian cartoon character, with a dog-like appearance. He is urged to leave by the narrator and the story depicts him leaving in various ridiculous ways, such as by a Crunk-car or on skis. In the ends, he leaves the normal way, by walking, and with a big smile on his face.