Five Riders vs. King Dark is the original movie for Kamen Rider X. It unites the first Kamen Riders, the Double Riders 1 and 2, V3 and Riderman, and X himself.
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. 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.
Footage from the movie was later edited into the unauthorized Thai adaptation Hanuman And The 5 Riders.
This movie contains examples of the following tropes:
- Crossover: Crosses X with the previous Kamen Riders.
- Fake Shemp: Riderman is played by a suit actor, stock footage from the TV show and an uncredited voice actor.
- Non-Serial Movie: This movie is supposedly in continuity due to bringing back Riderman, but can't fit well into the series at any point. X-Rider still hasn't been upgraded in the movie, but already knows the Riders, while in the TV show he only meets Rider 2 for the first time after getting his upgrade.
