A dude that has been banned from all music festivals in Sweden and many others in neighbouring countries because he covers himself with shit and bathes in urinals. He has also smeared shit all over the walls in multiple places, including one of the ferries here. I worked at an underground club for a few years around 2005 and he "painted" the walls of one of our toilets one time.
He never drinks or does drugs apparently, he's just fucked up. Been well-known since the 90s..