Medusa

Originally Medusa was a beguiling beauty. But after Pallas Athene surprised her while she had an affair with Poseidon in her temple, she was so angry that she turned the her into a winged monster with snakes instead of hair, scaly armor, glowing eyes and a tongue hanging out, like the Gorgons. The sight made any man to stone.

http://kaaaay.deviantart.com/art/Medusa-344425887