Jun Mizunoe

During a motocross practice, Keisuke Jin is ambushed by two Myth Cyborgs created by a secret organization that's attempting to control Japan, G.O.D. (Government of Darkness). He transforms into Kamen Rider X, but little does he know that his battle is recorded and analyzed by King Dark, G.O.D.'s commander, to create a super cyborg. Other G.O.D. cyborgs are attacking all over Tokyo and in the middle of the crisis, the original four Riders return to Japan from different countries around the world. The five Riders unite to lead a counter attack against G.O.D.

Professor Gill has created a machine that lets him restore destroyed robots. This machine is used to recreate all of the destructroids that had been destroyed by Kikaider. Kikaider is forced to destroy them all once again, and a new Destructoid Multi-Colored Sand Lizard.