Aries the "Ram" is a timid young woman with sheep horns who wears a wool coat. She attacks her opponents with wool clouds that subdue her opponents. Years before the series' present, Aries is owned by Karen Lilica, who abuses her by having her entertain the men Karen picks up and using her as a shield against magical attacks. However, when Karen threatens to keep her in the physical world as a form of punishment, Loke summons himself in place of Aries to protect her. Her Gatekey is stolen by Angel, who later uses her to fight Loke. After Angel is defeated and arrested, Aries makes a contract with Lucy as one of her Gatekeys.