Pig Pen from the Peanuts cartoon? Now that would be going a bit too far...
I think Struwwelpeter's powers could very well be along those lines, though. Maybe he has the uncanny ability to cause others to become filthy with grime and dust, and for their hair to grow long and shaggy and their nails to grow long and curled, though he doesn't affect anyone unless he wills it himself (or his teammates wouldn't want him around at all). And he must speak with a pseudo German accent for the full effect.
