"I'm an ___! You know, 'Grab your torch and pitchforks!' Doesn't that bother you?" ("Shrek" quote) (4)
I believe the answer is:
ogre
(Other definitions for ogre that I've seen before include "Man-eating monster of fairy tales" , "Terrifying giant" , "terrible person" , "'Demon, fiend (4)'" , "man-eater" .)