Yuichi Nakamura

as Kochiro Mizuchi

as Gaia Todoroki / Universe Gao Red (2 episodes), as Gaia Todoroki / Universe GaoRed (1 episode)

as Mr. Tanouchi (5 episodes)

as Koshiro Mizuchi / Kiyomaru

as Yuto Sakurai / Kamen Rider Zein / Kamen Rider Zeronos (3 episodes), as Yuto Sakurai / Kamen Rider Zein / Kamen Rider Zeronos (voice) (1 episode), as Yuto Sakurai / Kamen Rider Zeronos (voice) (1 episode)

as Shun

as von Reuenthal, Oskar

as Ogawa Masahiko (8 episodes)

as Ryuichi Tokioka

as Self

as Amagase Shou

as Ikkon Shirakura (11 episodes)

as Byakuya Togami

as Ayumi Okazaki

as 이가라시 카이리 (12 episodes)

as Yasuyuki Shimada

as Byakuya Togami

as Eiji Ishizaki