Fusion With Rei: https://www.deviantart.com/aniahmator/art/Rei-And-Leo-Fusion-735233147

Leo is one of the spirits that help out Rei as the Zodiac Wielder. He warms up to Rei immediately, and his optimism tends to annoy the Zodiacs (excluding Scorpio), even Gem. He is also a terrible cook, but he does try his best. Along with the 12 other zodiacs, he aids Rei in fighting the Reverse Zodiac Wielder and the 13 Reverse Zodiacs.