During the film Movie War Core, the character Nobunaga (portrayed by Kengo Ohkuchi) transforms into Kamen Rider Birth in one scene of the movie. Eiji Hino also temporarily uses the Birth system in Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals. Erika Satonaka uses the Birth system for a short while in the Kamen Rider OOO Allstars: Th...