Stheno

Stheno in Greek mythology, was the eldest of the Gorgons, vicious female monsters with brass hands, sharp fangs and "hair" made of living venomous snakes. Her name can be translated as “forceful” or “mighty.” She and her sister Euryale were both immortal, and the third sister, Medusa, was mortal until she was immortalized in her hideousness by Athena.

Of the three Gorgons, she was known to be the most independent and ferocious, having killed more men than both of her sisters combined. In Greek mythology, she was transformed into a Gorgon because of standing with her sister Medusa, who was raped by the sea god Poseidon in the Temple of Athena.

Athena wears the ancient form of the Gorgon head on her aegis, as the huge serpent who guards the golden fleece regurgitates Jason; cup by Douris, Classical Greece, early fifth century BC – Vatican Museum