Prometheus and Io - Io was a priestess seduced by Zeus, who turned her into a cow to hide her from his wife Hera. She wandered in torment until reaching Egypt, where she was restored to human form. Europa - Zeus fell in love with Europa and tricked her in the form of a bull. He carried her across the sea to Crete, where he revealed himself and they had two sons. Odysseus and the Cyclops - When Odysseus' crew landed on the shore of the Cyclops Polyphemus, he trapped them in his cave. Odysseus blinded Polyphemus with a wooden stake, allowing them to escape.