Kamen Rider × Kamen Rider OOO & Double Featuring Skull: MOVIE War CORE (仮面ライダー×仮面ライダー オーズ＆ダブルfeat.スカル MOVIE大戦COREコア, Kamen Raidā × Kamen Raidā Ōzu ando Daburu Fīcharingu Sukaru: Mūbī Taisen Koa) is a Japanese superhero Tokusatsu crossover Winter Film between Kamen Rider W and Kamen Rider OOO and is the second Movie War. The film also debuts the character Shintaro Goto, a future user of Kamen Rider Birth ahead of his in-series debut.