
"In Winter 2011, Movie War Will Evolve"
Movie War Mega Max featured the first seven Kamen Riders (Kamen Rider 1, 2, V3, Riderman, X, Amazon, and Stronger) to commemorate the franchise's 40th anniversary. Trailers for the film shown during airings of Fourze also showed the return of Kamen Rider Double as well as a new form for Kamen Rider OOO. Unlike previous Movie War films, where they were divided into 3 segments, Movie War Mega Max is divided into 5 parts. Like previous Movie War films the secondary Kamen Rider of Kamen Rider Fourze, Kamen Rider Meteor, made his debut in the film.
Eiji Hino / Kamen Rider OOO

Ankh

Gentaro Kisaragi / Kamen Rider Fourze

Nadeshiko Misaki / Kamen Rider Nadeshiko

Shotaro Hidari / Kamen Rider Joker

Kamen Rider 1 (voice)

Kamen Rider 2 (voice)

Kamen Rider V3 (voice)

Riderman (voice)

Kamen Rider X (voice)

Kamen Rider Amazon (voice)
Kamen Rider Stronger (voice)

Hina Izumi

Chiyoko Shiraishi
Erika Satonaka

Akira Date / Kamen Rider Proto-Birth

Shintaro Goto / Kamen Rider Birth

Birth Driver (voice) / Birth Buster (voice)

O Scanner (voice) / Poseidon Driver (voice) / GingaOh Driver (voice)

Kamen Rider Poseidon (voice)

Miharu Minato / Kamen Rider Aqua

Kōsei Kōgami

Philip / Kamen Rider Double

Gaia Memory (voice)

Katal
Solaris

Chancellor Kiima
Lem Kannagi

Kengo Utahoshi

Yūki Jōjima

Shun Daimonji

Miu Kazashiro

Tomoko Nozama

JK

Chūta Ōsugi

Mitsuaki Gamō

Virgo Zodiarts (voice)

Mysterious student
