The year is 2021 and the world is in a state of chaos and fear. The ancient king OOO has come back to life after 800 years of dormancy. As the Kougami Foundation mounts a human resistance, Eiji Hino returns to Japan, believing he has at last found the means to revive the Greeed Ankh...
as Eiji Hino / Kamen Rider OOO
as Ankh / Shingo Izumi
as Hina Izumi
as Dr. Akira Date / Kamen Rider Birth
as Shintaro Gotou / Kamen Rider Proto Birth
as Erika Satonaka
as Chiyoko Shiraishi
as Kousei Kougami
as Uva
as Kazari
as Gamel
as Mezool
as Mezool (voice)
as Ancient OOO (voice)
as Goda (voice)
