Medusa

In Greek mythology Medusa (Greek: Μέδουσα (Médousa), "guardian, protectress") was a monster, a Gorgon, generally described as having the face of a hideous human female with living venomous snakes in place of hair. Gazing directly upon her would turn onlookers to stone. Most sources describe her as the daughter of Phorcys and Ceto, though the author Hyginus (Fabulae, 151) interposes a generation and gives Medusa another chthonic pair as parents.