If you're aware of JtHM, then you're aware of Nny. Here's Invader Nny. He has no place set in mind to conquer...he just knows that a lot of blood will be shed.
Nny looks almost identical to Zim when in Irken form.
Nny was first spotted in his human form by a human boy named Squee. Squee doesn't know that Nny is an alien.
Nny is considered insane, and he doesn't mind the fact. In fact, he doesn't deny it, either!