Aquarius (アクエリアス Akueriasu), The Water Bearer (宝瓶宮 Hōheikyū), is a Celestial Spirit that is one of the 12 Golden Zodiac Keys. She is Scorpio's girlfriend. Her key was owned by Lucy Heartfilia until she sacrificed it in order to summon the Celestial Spirit King.[1] Nevertheless, Lucy still owns a part of her original key.[2] Later on, Lucy regained possession of her key again after finding it in Guiltina.[3]

Aquarius resembles a royal blue mermaid. She has a long, blue fish-tail, light blue hair that reaches up to her waist, and a large bust. She has blue eyes that seem to have no pupils. Aquarius wears a revealing dark blue bikini top and on each arm, she has a golden armlet and bracelet. Aquarius also has a circlet, three piercings on her tail, and a golden belt at her waist and light blue crystal earrings. A dark blue tattoo resembling the Aquarius zodiac symbol rests right under her collarbone. Aquarius also wields an urn that acts as the basis of the Water Magic she employs in battle. This design reflects her respective zodiac sign; Aquarius is often depicted as a merman or mermaid carrying a vessel from which a pouring stream of water emerges. As a swimming instructor, she takes a complete human form.