Foster’s Home for Imaginary Friends Season 4 Episode 1
When a large and dangerous imaginary friend is destroying the city, Imaginary Man comes and saves the day, and now, Mac is a fan. But once Mac is his sidekick, Bloo is jealous and joins forces with Nemesis, Imaginary Man’s mortal enemy. Will justice or evil win in the battle of the superfriends?
Episode Title: Challenge of the Superfriends
Air Date: 2006-04-28