In the odyssey circe restores the men to their human state by

In the Odyssey, Circe, daughter of Helios, is a witch who transforms the main character's crew into pigs when they eat a feast. One of them, a cautious man, sees what happens to the others and warns Odysseus about it.

On his way to Circe's, Odysseus is met by the god Hermes, who gives him a magic herb called moly. By eating it, Odysseus won't turn into a pig. He is also instructed to overpower Circe when she draws her sword and to make her swear not to harm him. After giving Odysseus her word, Circe agrees to restore his men to their human state and invites them to stay with her. They stay for a year and Odysseus and Circe become lovers. She ends up becoming a valuable character, for she predicts much of what will happen to Odysseus and instructs him about it.

caliban is prospero's slave in the shakespear's play "the tempest"