Possible Clues:

• Monster, half bull and half man, slain by Theseus in Cretan labyrinth
• Monster foreign tea said to be eaten by youngster
• In Greek myth, the bull-man monster slain by Theseus in the labyrinth in Crete
• Bullheaded type?
• Bully-boy who grew fed up with people
• Creature, half-man and half-bull, slain by Theseus in the Cretan maze
• Bull-headed Cretan monster
• Mythical beast of Crete
• Youngster holding a certain Greek character to be a awful beast
• Niven produced a loyal one