Circe

Circe (Κίρκη in Ancient Greek) is a minor goddess of magic (or sometimes a nymph, witch, enchantress or Sorceress) living on the island of Aeaea.

History
Circe's parents were eitherHelios, the former deity of the sun and Perseis, one of the Oceanids or Hecate, the goddess of magic and Aeëtes. In case of the former pairing Aeëtes is seen as her brother and she is also the sister of Perses and Pasiphae, the mother of the Minotaur and wife of king Minos. Circe transformed her enemies, or those who offended her, into animals through the use of magical potions. She was renowned for her knowledge of drugs and herbs. That Circe also purified the Argonauts for the death of Apsyrtus, as related in Argonautica may reflect early tradition. In Homer's Odyssey, banished by the gods, Circe is described as living in a mansion that stands in the middle of a clearing in a dense wood. Around the house prowled strangely docile lions and wolves, the drugged victims of her magic; they were not dangerous, and fawned on all newcomers. Circe worked at a huge loom. She invited Odysseus' crew to a feast of familiar food, a pottage of cheese and meal, sweetened with honey and laced with wine, but also laced with one of her magical potions, and she turned them all into pigs with a wand after they gorged themselves on it. Only Eurylochus, suspecting treachery from the outset, escaped to warn Odysseus and the others who had stayed behind at the ships. Odysseus set out to rescue his men, but was intercepted by Hermes, who gave him the holy herb moly to protect himself from Circe's potion and, having resisted it, he told him to draw his sword and act as if he were to attack Circe. From there, Circe would ask him to bed, but Hermes advised caution, for even there the goddess would be treacherous. She would take his manhood unless he had her swear by the names of the gods that she would not.

The Sea of Monsters
Circe ran a magical beauty salon on an island in the Sea of Monsters. She was extremely glamorous, and sometimes went by the alias of C.C. Although she treated females to a spa treatment, she turned all males into guinea pigs. She formerly turned them into actual pigs, but found them too hard to manage. She had captured Blackbeard and his crewmates and kept the ships in harbor. When Percy and Annabeth came, she turned Percy into a guinea pig by tricking him into drinking a magic potion. When Annabeth found out, she used Hermes' multivitamins to become immune to Circe's sorcery and free Percy from his curse and make their escape on the Queen Anne's Revenge. When trying to save Percy, she couldn't tell which guinea pig was Percy, so she put all of the multivitamins in the cage, freeing all of the other pirates that were also captured.

The Battle of the Labyrinth
Annabeth and Percy reminisce about their previous encounter with Circe, with Annabeth saying to Percy that he made a "cute guinea pig" much to his chagrin. She then gives him a hint that she likes him, which Percy does not understand.

The Lost Hero
Medea mentions her that Circe is her aunt, and that she taught Medea to charmspeak.

Appearance
Circe is described as a beautiful woman with piercing green eyes and long dark hair which was braided with threads of gold. She wore a silky black dress which had shapes that moved with the fabric, like animal shadows.

Powers
Sorcery: Circe is a goddess-level sorceress. She has nearly limitless magical power.
 * Alter Minds: She can alter minds.
 * Energy Blasts: Fire destructive magical energy blasts.
 * Illusion Casting: Create illusions.
 * Matter Transmogrification: Transform objects and beings.
 * Projective Animal Metamorphing: Her "signature move" is transforming men into various animals.
 * Teleportation: She can teleport from one place to another.
 * Telekinesis : She has the ability to move objects.
 * Agility: She moves with a prodigious agility that resembles a snake.
 * Charmspeak: She can convince people what to do even if they don't want to. Taught it to her niece, Medea.