Fan Casting Zim!!

Having been sent on a “Mission” to conquer the Earth as part of “Operation: Impending Doom, Part Two”. Zim and his robot minion GIR (Garbage Information Retrieval Unit) plan to take over the earth by disguising themselves as normal earth people and a dog to blend in. Unfortunately, a boy named Dib starts noticing the strange behavioral patterns of Zim and takes it upon himself to hound Zim and prove his identity to the world, even if he does go a little crazy in the process.