Minotaur 

A creature of Greek myth, the Minotaur had the head of a bull atop the body of a man.  He was the result of a dalliance between the wife of King Minos of Crete and a sacred bull. The Minotaur was carnivorous, and generally not a nice chap, so he was imprisoned inside a vast labyrinth.  Every year, King Minos would demand a certain number of Greek youths and women, and feed them to the Minotaur.  Eventually a young Greek hero named Theseus volunteered to be among the Minotaur's luncheon, and, with the help of Minos' daughter Medea, killed the Minotaur.