is a Japanese tokusatsu superhero television series. It was broadcast in 1974 on the Mainichi Broadcasting System and NET, now known as TV Asahi. It is the third entry in the Kamen Rider Series of tokusatsu shows. It starred Ryo Hayami in the title role. Plot summary Robotics scientist Keitaro Jin and his son Keisuke become caught up in a campaign of terror by an evil organization known as "G.O.D.". They are attacked and the professor's technology gets stolen, but before Keitaro dies, he performs surgery on his son, using the last of his robotics technology to transform Keisuke into the “X-Rider.” To avenge his father's death and ensure the safety of the entire world, Keisuke uses this technology as he battles the monstrous minions of G.O.D.’s Japan branch. Characters : The son of Keitaro Jin, Keisuke suffered mortal injuries inflicted by G.O.D when they attacked the Jins. As a result, with his father's final breath, Keisuke was made into an advanced cyborg developed for marine exploration called a named Kamen Rider X. Driven to avenge his father's death and save the world, X battles G.O.D.. : The mentor of the previous Kamen Riders. : Keisuke's fiancée, Keitaro's assistant, and a G.O.D. member. She and her twin sister Kiriko are Interpol agents investigating G.O.D., Ryoko joining the organization to spy on it while allowing herself to be turned into a cyborg. But Ryoko is forced to expose herself while protecting a child from Strong Arms Atlas and is destroyed by the G.O.D. General soon after. : Ryoko's twin sister who is an Interpol investigator. She died protecting Keisuke from Strong Arms Atlas' arrow. : A student of Johoku University and Tobei's coffee shop worker. : Chiko's friend and Tobei's coffee shop worker. : Keisuke's father, a robotics genius who trained his son with the two having a strained relationship. Refusing to join G.O.D when his technology attracted their attention, Keitaro is fatally wounded and turned his dying son into a cyborg to save his life. Prior to his death, Keitaro copied his mind into a super computer within the Jin Station which he intended to help Keisuke through. But the Jin Station acted on Keitaro’s thought process to self destruct to keep Keisuke from being overly dependent on it. G.O.D. The , short for the , is the evil organization supported by foreign nations. : A mystery man who commands