In Greek legend, a sorceress, the daughter of the sun god Helios and the ocean nymph Perse. By means of drugs and incantations she turned humans into lions, wolves, or swine. Odysseus visited her on his return from the Trojan War, and she changed his companions into swine. Odysseus himself was protected by an herb given him by Hermes, and he compelled the sorceress to restore his companions. He and Circe became lovers, but after a yearlong stay he resumed his journey homeward.