Kamen Rider Black RX: Run All Over The World

The film involves a team-up between Kotaro Minami's four Kamen Rider alter-egos (Black, RX, Robo Rider, and Bio Rider) to fight against the Crisis Empire. Tetsuo Kurata plays Minami Kohtaro and voices all four of his Kamen Rider alter-egos. General Jark, the four commanders of Crisis, and three high priests of Gorgom also appear in the movie. (Source: kamenrider.wikia)