Perseus

Also Known As: Greek Περσεύς, Perseus; son of Danaë and Zeus; founder of Mycenae and ancestor of the Perseid line
Region/Culture: Southern Europe
Mythos: Greek Mythology
Primary Type/Nature: Heroes and Mortals
Mythical Attributes: A mortal hero equipped by the gods with winged sandals, an invisibility helm, an adamantine blade and a silver bag, whose signature weapon is the severed Gorgon head that petrifies anyone who meets its gaze.
Role in Mythos: Perseus is the Argive hero who kills Medusa, rescues Andromeda from a sea monster, fulfils the prophecy that he would kill his grandfather, and founds Mycenae and the dynasty that rules it.
Relation to Humans: He is himself human, born to a mortal princess and raised by a fisherman, and his story turns on ordinary human pressures rather than divine ones: a jealous king, a rash boast, a family that tries to outrun an oracle. His victories protect people, but the head he carries kills indiscriminately, and by the end of his story he has used it on a royal court and killed a member of his own family by accident.

The chest came ashore on Seriphos with the tide, its seams stuffed with weed, its timbers still sweating brine, and when Dictys the fisherman levered the lid off there was a young woman inside and a baby who had gone past crying. That is the beginning of Perseus. Not a birth in a palace but a salvage, hauled up the shingle by a man who worked nets for a living.

His grandfather had put him in the water. Acrisius, king of Argos, went to an oracle wanting a son and was told instead that his daughter’s boy would kill him, so he did what men in these stories always do and built a prison out of the problem: a bronze chamber sunk into the ground with Danaë locked inside it. Zeus came in through the roof as a shower of gold. Apollodorus, who preserves the fullest account, notes without much ceremony that some told it otherwise and named the seducer as Acrisius’s own brother Proetus, which explains the long feud between the brothers just as neatly and involves no gold at all. Either way a child arrived, Acrisius refused to believe a god had been in his cellar, and mother and son went into the sea in a box.

Seriphos was a small island with a king named Polydectes, who wanted Danaë and could not get near her while her son was in the house. So he announced a banquet at which every guest would bring a horse, knowing the boy had none, and let Perseus talk himself into an alternative. Perseus offered the head of the Gorgon instead. He was young enough to think that was a good line.

Finding the Gorgons meant first finding someone who knew the way, and the only ones who did were the Graeae, three grey sisters who had been old since birth and shared one eye and one tooth between the three of them. He waited in the dark for the handover, the moment when the eye was out of one socket and not yet in the next, and took it out of the air. They gave him directions to get it back.

The rest of his equipment came from nymphs: sandals that flew, a helm of Hades that pulled its wearer down into a gloom like night, and the kibisis, a silver bag hung with gold tassels and built to carry a thing nobody should look at. Hermes handed him a curved adamantine blade. Athena gave him the instruction that mattered more than any of the gear, which was not to look.

High over the water he went invisible, the sandals beating at his ankles, the empty bag knocking against his spine on every downstroke, the sea below him flattened by distance into hammered metal. Beneath the helm the world dimmed and coarsened, as though seen through smoke.

He found the three Gorgons asleep. Two of them, Stheno and Euryale, could not be killed at all; only Medusa was mortal, and even she could not be faced. So he worked backwards, watching her reflection in the polished bronze while Athena guided his hand, and cut. From the open neck came Chrysaor with his golden sword and the winged horse Pegasus, both of them full-grown and both of them a surprise. The surviving sisters woke. Hesiod’s picture of the chase is all sound: the two of them unspeakable and unapproachable, snakes hanging from their belts with heads turned forward and tongues going, their feet coming down on pale adamant so that the whole shield rang. Perseus is shown at full stretch, hurrying, shuddering with horror. He had the head. It did not make him brave.

Flying home across Libya, blood dripping from the bag bred the desert’s serpents out of the sand. Ovid sends him past Atlas, who refuses him hospitality and is shown the head for it, and turns into the mountain that carries the sky. Then, over the coast that later writers place at Joppa, he saw a woman chained to a sea cliff and at first took her for a statue, because she was not moving and the wind was not touching her hair. Andromeda was there because her mother Cassiopeia had boasted about her own beauty and Poseidon had sent Cetus to eat the coastline until the girl was staked out for it. Perseus struck a bargain with her father for her hand, dropped onto the monster’s back and drove his blade in below the shoulder while the thing rolled and sounded in the shallows. At the wedding her previously uninterested betrothed, Phineus, arrived with armed men to reclaim her, and the fight ended the way fights ended near Perseus: he told his own side to look away, and lifted the head.

He came back to Seriphos to find his mother hiding in a temple from Polydectes. He walked into the king’s hall, where the court was at dinner, and did it again. Dictys, who had opened the chest, was made king in the dead man’s place. The sandals, the helm and the bag went back to Hermes for return to the nymphs, and the head went to Athena, who set it on her aegis, where it remained the single most recognisable object in Greek art.

The prophecy was still outstanding. Perseus went north to Larissa for funeral games and threw a discus, and it went into the crowd, and it killed an old man who had come to watch. He killed his grandfather by accident. Ashamed to take Argos by inheritance from a man he had killed, he traded kingdoms with his cousin Megapenthes and took Tiryns instead, and there he founded Mycenae and the fortifications that Greeks of later centuries were still pointing at. His descendants held Mycenae, Elis, Sparta and Messenia, and Herodotus records the Persians tracing their own name back to his son Perses, which is a considerable afterlife for a baby who came ashore in a box.

Almost nothing he could do was his. The flight, the invisibility, the blade that would not blunt, the bag that could hold the head safely: all of it was lent to him by gods and all of it went back. What remained his own was nerve and a good arm, and a weapon that worked on anything with eyes, including allies, including men who had merely been rude to him. The limits are built into the same gift. The head must never be looked at by its bearer, so its every use requires him to turn away at the moment of the killing and to trust that everyone he cares about has done the same. Stripped of the borrowed equipment he is an unusually determined young man with a sword. And the oracle that started the whole thing was never once outrun: not by the bronze chamber, not by the sea chest, not by Acrisius fleeing to another city entirely, and not by a grandson who by then had killed a Gorgon and a sea monster and had no intention of harming him at all.

Frequently Asked Questions

Who was Perseus in Greek mythology?

Perseus was an Argive hero, the son of the mortal princess Danaë and Zeus, who beheaded the Gorgon Medusa and rescued Andromeda from the sea monster Cetus. He was set adrift as an infant with his mother and raised on the island of Seriphos by a fisherman named Dictys. He later founded Mycenae and became the ancestor of the Perseid dynasty.

How did Perseus kill Medusa?

Perseus killed Medusa by never looking directly at her. Guided by Athena, he watched her reflection in a polished bronze surface while she slept and cut off her head with an adamantine blade given to him by Hermes. He carried the head away in the kibisis, a silver bag made to contain it, wearing the cap of Hades so the surviving Gorgons could not see him.

What weapons and equipment did Perseus use?

Perseus used four borrowed items plus a blade: winged sandals for flight, the cap of Hades for invisibility, the silver kibisis to carry the Gorgon head, and a curved adamantine sword from Hermes. All of the equipment was returned after the quest, and the head itself went to Athena, who fixed it to her aegis.

Why did Perseus rescue Andromeda?

Andromeda had been chained to a sea cliff as a sacrifice to Cetus, a monster sent by Poseidon after her mother Cassiopeia boasted about her own beauty. Perseus agreed to kill the creature in exchange for Andromeda’s hand in marriage, then attacked it in the shallows and stabbed it below the shoulder. At the wedding he used Medusa’s head against Phineus, the rival who came armed to claim her.

How did Perseus fulfil the prophecy about his grandfather?

Perseus killed Acrisius by accident with a thrown discus during funeral games at Larissa, exactly as the oracle had said he would. Acrisius had tried to prevent it by imprisoning Danaë and later by leaving Argos altogether. Perseus refused to inherit the kingdom of a man he had killed and exchanged it with his cousin Megapenthes, taking Tiryns and founding Mycenae instead.