humans and feed off of their desires, the disembodied arm of the Greeed named Ankh gives Eiji a belt and three Medals to fight the other Greeed as Kamen Rider OOO. The mysterious Kougami Foundation approaches Eiji and begins assisting him in his fight against the Greeed, though their true motives are not clear. As Eiji fights the Greeed and their Yummy monsters, learning more about the Greeed and Ankh, he starts to find a purpose beyond his journey. Episodes Each episode title of Kamen Rider OOO consists of three objects featured in the episode. Films The character of Eiji Hino (portrayed by Watanabe) and Kamen Rider OOO made their debut in Kamen Rider Ws second film Kamen Rider W Forever: A to Z/The Gaia Memories of Fate. Movie War Core After the end credits of W Forever, a short teaser featuring Kamen Rider Double and Kamen Rider OOO stated that there would be a crossover film featuring both series' characters, much like Kamen Rider × Kamen Rider W & Decade: Movie War 2010. It is titled . As part of it, OOOs film opened in Japanese theaters on December 18, 2010. The event of the movie took place between episode 12 and 13. Let's Go Kamen Riders , released on April 1, 2011, commemorates the 40th anniversary of the Kamen Rider Series featuring the cast and characters of Kamen Rider Den-O, Kamen Rider OOO, and other characters from the past franchise series. The event of the movie took place between episode 26 and 27. The Shogun and the 21 Core Medals is the main theatrical release for Kamen Rider OOO, released on August 6, 2011, alongside the film for Kaizoku Sentai Gokaiger. It also features the first on-screen appearance of the 13th Heisei Kamen Rider: Kamen Rider Fourze. The event of the movie took place between episode 36 and 37. Movie War Mega Max A crossover film between Kamen Rider OOO and Kamen Rider Fourze in the same vein as the Movie War 2010 and Movie War Core films, titled , was released on December 10, 2011, in Japan. Super Hero Taisen is a film which features a crossover between the characters of the Kamen Rider and Super Sentai Series. The protagonists of Kamen Rider Decade and Kaizoku Sentai Gokaiger were featured, but the casts of Kamen Rider Fourze, Kamen Rider OOO, and Tokumei Sentai Go-Busters also participated. Shu