You should ask at your library for the book The Greek Myths by Robert Graves.
It's a myth!!
Theseus and the minotaur.
Theseus kills a few creatures in Greek myth, but the most famous is the Minotaur.
Minotaur
It is just a famous myth that most people know.
When Percy, like Theseus, fights the Minotaur on pages 53/54/55.
The Greek Myth, Theseus and the Minotaur.
Most likely the Athenians, as Theseus was their hero/king.
The story of Theseus and the Minotaur is considered a myth. Myths typically involve gods and supernatural beings, while legends focus on historical events and figures.
The Minotaur was killed by Theseus, the prince of Athens. He kept a sword hidden from the guards and used it to slay the Minotaur. There are many edition to this myth, and this is one of them.
When he was a young man. If you mean "what year?", you understand, of course, that this is a myth, and that while there was likely a Theseus, there never was a Minotaur. This is mythology, not history.
Theseus was the person that killed the Minotaur!