For the Masked Rider that shares his name, see Masked Rider X. For the lookalike in Masked Rider, see V3 (Masked Rider). Keisuke Jin (神 敬介, Jin Keisuke) is the main protagonist of Kamen Rider X. He was remodeled by his father, Keitaro Jin, into a Kaizorg (カイゾーグ, Kaizōgu), a cyborg built for undersea exploration, becoming X-Rider (Xライダー, Ekkusu Raidā). He is also otherwise referred to by the title Kamen Rider X (仮面ライダーＸ（エックス）, Kamen Raidā Ekkusu, Masked Rider X). Keisuke was the son of Robotics s