Diaper Dog (formerly known as "Danger Dog") is Super Diaper Baby's sidekick. He defeated Deputy Doo-Doo and Rip Van Tinkle with him. Diaper Dog is Super Diaper Baby's best friend and pet who shares the same powers as him. His heroic, helpful, clever and obedient personality is a big help to Him and Billy Hoskins when they're fighting crime and the forces of evil.