This is Medusa and her sister Stheno and Euryale.Medusa was a priestess in the temple of Athena before she got .... by Poseidon in Athena temple because she didn't had any interest in him.She wants to become a high priestess of Athena temple a.k.a being a virgin for life.As punishment Athena turn her in a gorgon. And everyone who look in her eyes turn in stone. Until Perseus cut her head off.After her dead Chrysaor(stout-hearted warrior) and pegasus (winged horse) were born from her blood#medusa