Legend states that Medusa was once a beautiful, avowed priestess of Athena who was cursed for breaking her vow of celibacy. She is not considered a goddess or Olympian, but some variations on her legend say she consorted with one. When Medusa had an affair with the sea god Poseidon, Athena punished her. She turned Medusa into a hideous hag, making her hair into writhing snakes and her skin was turned a greenish hue. Anyone who locked gaze with Medusa was turned into stone.