Renn Kiriyama as Shotaro Hidari / Kamen Rider W / Kamen Rider Joker

Masaki Suda as Philip / Kamen Rider W / Young Katsumi Daido

Mitsuru Matsuoka as Katsumi Daido / Kamen Rider Eternal

Minehiro Kinomoto as Ryu Terui / Kamen Rider Accel

Shu Watanabe as Eiji Hino / Kamen Rider OOO

Masayuki Deai as Ken Ashihara / Trigger Dopant

Hikaru Yamamoto as Akiko Narumi

Takeshi Nadagi as Mikio Jinno

Shingo Nakagawa as Shun Makura

Nasubi as Watcherman

Zennosuke Fukkin as Santa-chan

Tomomi Itano as Queen

Tomomi Kasai as Elizabeth

Minori Terada as Ryubee Sonozaki

Ami Namai as Saeko Sonozaki

Rin Asuka as Wakana Sonozaki

Aya Sugimoto as Maria S. Cranberry

Genki Sudo as Kyosui Izumi

Minase Yashiro as Reika Hanehara

Mika Kurosawa as Kurumi Suzumiya

Shion Sato as Eita

Yuki Ono as Eita's Mum

Fumihiko Tachiki as Narration, Gaia Memory Voice, T2 Gaia Memory Voice

Tsunekichi Ōmori as Tabata

Koji Nakamura as Gozo Domoto

Akira Kushida as O Scanner (voice)