Gamedeus

Gemdeus (ゲムデウズ) is the thirteenth and final boss Bugster of Kamen Rider Chronicle, which will be supposedly be faced by the Ride-Player once they defeat all twelve Bugsters before it, claiming their Gashatrophies as proof. Not much is known about it at this time.

Foreshadowing
Overheard by Emu Hojo, the presence of a final boss in Kamen Rider Chronicle was revealed by Poppy Pipopapo while she acted as navigator to the human Ride-Players, promoting it as the last opponent to be faced once the twelve familiar Bugsters are all defeated.

Appearances

 * Icon-exaid.png Kamen Rider Ex-Aid
 * Episode 25: Start the New Game!