Zim: The Hideous New Boy

In this AU Zim and Tak swap places, Zim comes down to earth to claim Tak's mission which he sees as rightfully his, but her and her awful friends get in the way.
There is no way he can return to Irk after losing to a defective so he's forced to stay on Earth and at least try to get along.

Keep in mind that this story has very short chapters, that's just how my writing style is so you'll probably want to read multiple chapters in one go