A young man from a dystopic future in the year 2068, Geiz is part of a resistance force that fought Oma Zi-O. He time travels to 2018 to erase Tokiwa Sougo before the latter will become Oma Zi-O in 50 years from the present time.
Geiz uses a Jikuu Driver to transform into Kamen Rider Geiz, the secondary Rider and rival to Zi-O.
Using Ridewatches with the Jikuu Driver, Geiz has access to armored forms themed after Legend Riders called Ride Armors,
which possess the powers of a Legend Rider respective to the Ridewatch used with the driver.