is a Kamen Rider Series Japanese TV special that aired on January 3, 1984. It is a special meant to celebrate the birth of Kamen Rider ZX, the 10th person to don the Kamen Rider title. Prior to the special, ZX appeared in a manga from 1982 to 1983. Plot summary Ryo Murasame is an aircraft pilot. One day he is taking his sister out on a ride along the Amazon when they are shot down by a UFO. They survive only to be captured by the Badan Empire. His sister is killed, while Ryo becomes the Combat Roid known as ZX. His memory is erased by the Badan Empire, and he works as their agent of evil. This doesn't last long; an accident occurs which causes Ryo to regain his memory and escape Badan. A year later, Ryo begins his attack on Badan as they finish the preparations for their doomsday weapon: the Space Break System. A coordinated attack by all of the Kamen Riders disables the Badancium 84 supplies needed for the Space Break System to work. When Ryo arrives, he Believes Kamen Riders V3, Riderman and Super-1 are enemies. The other Riders get him to listen to them and only one truck full of Badancium 84 makes it to Badan's base run by Ambassador Darkness. After being shown a video detailing the history of Kamen Riders 1 to Super-1, Ryo is amazed that there are others like him. He then joins the Kamen Riders in raiding the base. However, during the raid, he encounters his former comrade, Mikage, who forces him to fight as Tigeroid. After being forced to kill his friend, ZX joins the other 9 Kamen Riders as they battle Ambassador Darkness, Monster Roids, and the Combat Roids. When Ambassador Darkness uses the Space Break System on the Kamen Riders, they synch their powers with ZX, using his ZX Kick to kill Ambassador Darkness and destroy Badan's base even as its Great Leader appears and bids the Riders farewell. Soon after, ZX joins the ranks of the Kamen Riders as their 10th member. Characters : Ryo is an aircraft pilot, he lives with his sister and it's presumed he lived with his parents. He is impulsive and hesitates to trust the veteran Riders when he first encounters them. He has the most cybernetic body out of any Kamen Rider created thus far. His body has