The Powerpuff Girls - THis guy, THIS GUY RUINED IT

So this isn't someone's self insert fic, it's someone's RL person/fictional character ship?

I don't think that makes it any better.

Actually, that's been disproven. They confirmed the character was not created by him, the animators just chose to base his appearance off of him. A lot of animators sneak caricatures of the production staff into their shows for fun. The whole thing was just a coincidence.