In Greek mythology, Medusa, the gorgon, was a monstrous female character, whose gaze could turn onlookers to stone. Medusa was featured in the story of "Perseus and the Gorgon". Medusa was an ugly creature with sharp fangs and lolling tongues, bronze wings, and hair of living, venomous snakes. She lived with two other gorgons who were her sisters, and they had three other sisters, the Graeae.
She was originally an attractive young woman with lustrous hair, until Poseidon, the ocean god, fell in love with her and the two had sex in the temple of Athena, goddess of wisdom. Although Athena was furious, she refused to punish Poseidon for his crime, and turned her anger on Medusa, turning her and her sisters into Gorgons and spiriting them off to an island.
Medusa was decapitated by Perseus.