Medusa received help. He received a mirrored shield from Athena, gold, winged sandals from Hermes, a sword from Hephaestus and Hades's helm of invisibility. Since Medusa was the only one of the three Gorgons who was mortal, Perseus was able to slay her while looking at the reflection from the mirrored shield he received from Athena. During that time, Medusa was pregnant by Poseidon. When Perseus beheaded her, Pegasus, a winged horse, and Chrysaor, a giant wielding a golden sword, sprang from her body. Jane Ellen Harrison argues that "her potency only begins when her head is severed, and that potency
Medusa to have been formed of Medusa's blood spilled onto seaweed when Perseus laid down the petrifying head beside the shore during his short stay in Ethiopia where he saved and wed his future wife, the lovely princess Andromeda. Furthermore, the poisonous vipers of the Sahara, in the "Argonautica" 4.1515, Ovid's "Metamorphoses" 4.770 and Lucan's" Pharsalia" 9.820, were said to have grown from spilt drops of her blood. The blood of Medusa also spawned the Amphisbaena (a horned dragon-like creature with a snake-headed tail). Perseus then flew to Seriphos, where his mother was being forced into marriage with the king, Polydectes,