Medusa, one of the three monstrous Gorgons, was a snake-haired female who turned anybody who looked upon her to stone. She was finally killed by the hero Perseus, who used her severed head as a weapon against his enemies.

Medusa – Mythopedia

Medusa: The Ancient Greek Myth of the Snake-Haired Gorgon, gorgons and goddesses

Medusa and Her Sisters: The Gorgons – Women in Antiquity, gorgons and goddesses

Perseus – Mythopedia

Perseus showing the Gorgons head, illustration for The Greek, gorgons

Perseus – Mythopedia

Perseus – Mythopedia

Ancient Greek Scene: Two Men Fighting

Cross Edition Dungeons and Dragons — Today's DnD Creature, The Medusa

My take on Medusa, the Libyan snake-haired Gorgon from Greek mythology : r/SnakeHair, gorgons and goddesses