Geiz Myoukouin

Geiz Myoukouin is Kamen Rider Geiz the secondary rider and deuteragonist of Kamen Rider Zi-O. He is a Rider who comes from the year 2068 when the world was devastated by the tyrannical rule of Oma Zi-O. He travels to the year 2018 to kill Oma Zi-O past teenager self, Sougo Tokiwa, and prevent the ruined future, but slowly begins to befriend him instead.

It is later revealed by White Woz that in an alternate timeline Geiz defeated Oma Zi-O on the Day of Oma when he was supposed to have arisen in his new form Geiz Revive.