Confronting a mysterious enemy, the Pteranodon Yummy, Kamen Rider W receives aid from Ryu, who has infuriated Akiko by being too busy to attend her wedding! Akiko demands to know why he even became a Kamen Rider in the first place and the Pteranodon Yummy as it uses the Memory Memory on her to give her the answer to her question. Meanwhile, at the Kougami Foundation, Kousei Kougami talks of the most avaricious man in Japan, Oda Nobunaga, whose final resting place was found. With Doctor Maki overseeing the process, Kougami commissions the creation of a Cell Medal homunculus based on Nobunaga himself. Later, Kamen Rider Core begins to destroy the area as Kamen Riders OOO and W team up to fight the enemy. However, Kamen Rider Core proves too powerful and the two go underground to destroy the Gaia Memory’s source of power to even the odds.
as Shotaro Hidari / Kamen Rider W
as Philip / Kamen Rider W
as Ryu Terui / Kamen Rider Accel
as Sokichi Narumi / Kamen Rider Skull
as Gaia Memory / Kamen Rider Core (voice)
as Eiji Hino / Kamen Rider OOO
as Shun Makura
as Akiko Narumi
as Mikio Jinno
as Watcherman
as Santa-chan
as Queen
as Elizabeth
as Sam / Isamu Bito
as Stone
as Ankh
as Hina Izumi
as Nobunaga
as Kousei Kougami
as Shintaro Goto / Kamen Rider Birth
as Erika Satonaka
as Kiyoto Maki
as Chiyoko Shiraishi
as Uva (voice)
as Kazari (voice)
as Gamel (voice)
as Mezool (voice)
as Yoshino Akechi
as Male Pteranodon Yummy
as Female Pteranodon Yummy
as Armored Warrior Inhumanoid (voice)
as Giru / Kyoryu Greeed (voice)
as O Scanner (voice)
as Birth Driver (voice)
as President of Future Soft
as Employee of Future Soft
as Gen-san
as Naomi
as Commercial Director
as Shroud (voice)
as Seiichiro "Matsu" Matsui / Spider Dopant
as Eren Komori / Bat Dopant
as Kozo Yaguchi
as Kozo Yaguchi's wife
as Young Akiko Narumi
as Young Shotaro Hidari
as Young Marina Tsumura
