Minotaur

Asterius, "called the Minotaur", the bull-headed son of Pasiphae and the bull Poseidon sent to Minos; shut by Minos in the Labyrinth of Daedalus and fed on Athenian youths and maidens until Theseus killed him with his fists and found the way out by Ariadne's clue. Not to be confused with the Cretan bull of Heracles's labour.