Mean Bob is the superhero in Nickelodeon's animated TV series, CatDog. He is Dog's ultimate hero, who is having watched Mean Bob movies, playing the video games and with the toys, Cat is quite an expert on Mean Bob and how to do certain things like dodge meteors, fly and shoot at enemy ships, and battle "Salivians". Mean Bob has made appearances as an action figure, or actor,
He is voiced by Billy West.
- In Spaced Out, he appears as the main protagonist in Mean Bob in Space, Part 12. But he then falls to the sun when Cat accidentally ejects him. He presumably have a love interest named Princess Kitaen.
- In Dog Show, he appears as a contestant judge for the Dog Show.