Fusion With Rei: https://www.deviantart.com/aniahmator/art/Rei-And-Capricorn-Fusion-741022181

Capricorn is one of the spirits that help out Rei as the Zodiac Wielder. He appears to be quite calm, but he is actually quite lively and childish. Along with the 12 other zodiacs, he aids Rei in fighting the Reverse Zodiac Wielder and the 13 Reverse Zodiacs.