Fusion With Rei: https://www.deviantart.com/aniahmator/art/Rei-And-Aries-Fusion-730937489

Aries is one of the spirits that help out Rei as the Zodiac Wielder. She is rather shy and takes a while to warm up to him. Along with the 12 other zodiacs, she aids Rei in fighting the Reverse Zodiac Wielder and the 13 Reverse Zodiacs.