Pheles(フィレスFiresu) is a Crimson Lord who fell in love with a human named Johann and, with his help, created the powerful Treasure Tool Reiji Maigo in order to stay with him forever. Her true name is "Colorful Wave"(彩飄Saihyō) and with "Eternal Lover" Johann, they are referred to as "Engaged Link"(約束の二人（エンゲージリンク）Yakusoku no Futari (Engējirinku), lit., "The Promised Two").