Theagenes of Thasos
That one guy.
Live in 480 BCE
He became famous in Greece when he stole a bronze statue he liked. The statue was really big and heavy and he was just a wee little boy. He competed in boxing pankratius, and running. He got crowned in 1300 events. He started competing at the age of nine. He won two crowns for boxing and one for pankratius.
Other Victories
In addition to his two Olympic victories, one in boxing and one in the pankration, Theagenes won a lot of victories in other games.