Perseus Full Sleeve in progress ! Perseus, in Greek mythology, the slayer of the Gorgon Medusa and the rescuer of Andromeda from a sea monster. Perseus was the son of Zeus and Danaë, the daughter of Acrisius of Argos. As an infant he was cast into the sea in a chest with his mother by Acrisius, to whom it had been prophesied that he would be killed by his grandson. After Perseus had grown up on the island of Seriphus, where the chest had grounded, King Polydectes of Seriphus, who desired Danaë,