Freddy Kruger (Stripy top, fedora hat...very smart)
Michael Myers (Classic evil mask & boiler suit combo)
Ghostface from Scream (The tongue-in-cheek super smiley mask)
Hannibal Lecter (Standard pysc-ward getup)
Leatherface (Masks made from the flesh of his victims)
Other... (add to the wall or our discussion board!)