In the Greek world, a Gorgon is a being that refers to any of the three sisters who had hair made of live and poisonous snakes, and a body with snake features, and petrifying eyes, daughters of Phorcys and Ceto.
The Gorgons were Stheno, Euryale and Medusa killed by the demigod and the hero Perseus.
Reference[]
Secrets of the Ancient World the guide used by game masters of the Hercules & Xena Roleplaying Game by West End Games.