This guy just popped into my head one day. Because his legs are obviously mutalated, he has to fly. He attacks people from behind by ramming those tusk-like fangs into the base of your skull and then brings his sharp upper teeth down into the top of your head. He is immortal but lacks the ability to stay in perfect condition. That is why he is slowly rotting away,and his legs aren't usable. I really like this picture.