"The strongest heroes gather! In the face of the evil scientist's plan to exterminate humanity, 6 warriors will stand up and fight."
Kamen Riders Build and Ex-Aid team up with the legendary heroes of the Heisei Generation - OOO, Fourze, Gaim, and Ghost.
Sento Kiryuu / Kamen Rider Build
Emu "M" Houjou / Kamen Rider Ex-Aid
Eiji Hino / Kamen Rider OOO
Gentarou Kisaragi / Kamen Rider Fourze
Kouta Kazuraba / Kamen Rider Gaim
Takeru Tenkuuji / Kamen Rider Ghost
Ryuuga Banjou / Kamen Rider Cross-Z
Misora Isurugi
Hiiro Kagami / Kamen Rider Brave
Taiga Hanaya / Kamen Rider Snipe
Dan Kuroto / Kamen Rider Genm
Asuna Karino / Poppy Pipopapo
Kiriya Kujou / Kamen Rider Lazer
Nico Saiba
Parado
JK
Onari Yamanouchi
Sawa Takigawa
Takumi Katsuragi
Justaway Shiihashi
Ankh
Chuta Ohsugi
Gentoku Himuro
Souichi Isurugi
Kaisei Mogami · Kaiser / Kaisei Mogami · Kaiser Reverse / Bikaiser (voice)
Musashi Ghost (voice) / Nobunaga Ghost (voice) / Grim Ghost (voice)
Kamen Rider Grease (voice)
Build Driver (voice)
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