Theseus was a famous Greek hero and son of Aegeus, king of Athens. He went on many adventures as a young man, defeating dangerous monsters and villains. This established his reputation as a great warrior. One of his most famous feats was slaying the Minotaur in the Labyrinth of Crete and escaping with the help of Ariadne's string. His bravery ended the cruel tradition of Athens sending young people to be killed by the Minotaur.