OOO, Den-O, All Riders: Let's Go Kamen Riders (オーズ・電王・オールライダー レッツゴー仮面ライダー Ōzu Den'ō Ōru Raidā: Rettsu Gō Kamen Raidā) is a film released on April 1, 2011, to commemorate the 40th anniversary of the Kamen Rider Series. The catchphrase for the movie is "The world, these are Japan's heroes!!" (世界よ、これが日本のヒーローだ!! Sekai yo, kore ga nihon no hīrō da!!). While the film features all of the franchise's protagonists, the main heroes of the original Kamen Rider, Kamen Rider Den-O, and Kamen Rider OOO are the central characters. The film's subtitle "Let's Go Kamen Riders" is an homage to the theme song of the original series, "Let's Go!! Rider Kick" (レッツゴー！！ライダーキック Rettsu Gō!! Raidā Kikku). The film also marks the 60th Anniversary of the Toei Company and to commemorate it, the film features characters