What greek hero killed the menatoar?

The Greek hero who killed the Minotaur was Theseus. He journeyed to Crete to confront the creature, which was half-man and half-bull, and used a ball of thread given to him by Ariadne to navigate the labyrinth where the Minotaur resided. After slaying the beast, Theseus successfully escaped the labyrinth and returned home, becoming a celebrated hero in Greek mythology.