Kamen Rider 1 (仮面ライダー1号, Kamen Raidā Ichi-Gō, Masked Rider No.1), or simply Kamen Rider (仮面ライダー, Kamen Raidā, Masked Rider) is the main protagonist in the original Kamen Rider, Kamen Rider The First, Kamen Rider The Next, and the movie Kamen Rider 1.