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Gai Amatsu (天津 垓, Amatsu Gai) is the former overarching antagonist of Kamen Rider Zero-One. He is the former CEO of ZAIA Enterprise Japan who transforms into Kamen Rider Thouser (仮面ライダーサウザー, Kamen Raidā Sauzā).
Kamen Rider Thouser
Arsinoitherium
for Arsinoitherium in Prehistoric Museum
Suggested by satsuinohadouken5100
All the fictional characters you can find at the Museum
