Medusa is remembered today as a monster: snake-haired, deadly to look at, beheaded by a hero. But her earliest surviving version tells a simpler story than the one that made her famous — and the version everyone knows was, on inspection, a considerably later addition with a genuinely troubling implication.
In Hesiod's earliest account, Medusa is simply one of three Gorgon sisters — Stheno, Euryale and Medusa — daughters of the primordial sea deities Phorcys and Ceto. Uniquely among the three, Medusa alone was mortal, which is precisely why Perseus's quest to kill her was possible at all; her immortal sisters could never have been beheaded.
The version most people know is a later addition, and it deserves scrutiny. The Roman poet Ovid's Metamorphoses, composed centuries after Hesiod, adds an origin story absent from the earliest sources: Medusa, in this version, was originally a beautiful mortal priestess serving Athena, who was raped by Poseidon inside Athena's own temple. Athena's response, in Ovid's telling, was to punish Medusa — not Poseidon — transforming her hair into snakes and giving her a petrifying gaze. A victim of assault, in this later retelling, becomes the one who is disfigured and ultimately hunted down for it.
Sent by King Polydectes on what was intended as a suicide mission, Perseus assembles help from multiple gods: a polished bronze shield from Athena, winged sandals from Hermes, and Hades' helm of invisibility. Using the shield's reflective surface to view Medusa without meeting her petrifying gaze directly, he beheads her while she sleeps.
Death and birth in the same instant: Medusa was pregnant by Poseidon at the moment of her death — from her severed neck spring both Pegasus, the winged horse, and Chrysaor, a giant warrior. Her head retains its petrifying power even after death; Perseus uses it as a weapon before Athena eventually places it on her own shield as a protective emblem, the Gorgoneion.
Natalie Haynes' 2022 novel Stone Blind retells the myth explicitly from Medusa's perspective, foregrounding exactly the injustice Ovid's version embeds — a woman punished for a crime committed against her — as part of the same broader wave of feminist Greek myth retellings that has also reexamined Circe, Penelope and Atalanta.