Man, the Four Horsemen really know how to sculpt 'em.  The 200x MotU Trap Jaw is a really nasty piece of work: he's scarred, the skin on his skull is tightening to the point he really looks dead.  So, I imagine him as Skeletor's seed of chaos, an undead monster that will think nothing of devouring the people of Eternia to feed his own morbid and insatiable need.