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
Cepheus of Ethiopia daughter Andromeda was offered up to the monster. The king chained the princess to a rock by the shore at the insistence of his people to be devoured by Cetus. Andromeda was saved from this fate when Perseus, flying home with his trophy (i.e. head of Medusa), had passed by the kingdom of Cepheus and noticed that a girl of wonderful beauty was chained to a rock by the seashore. Perseus fell in love with her at first sight and undertook to slay the monster if she would promise to marry him; or, in a slightly different version, he approached