Akira Yamaguchi

Unable to sleep, Bob and Charlotte, two Americans in Tokyo, cross paths one night in the luxury hotel bar. This chance meeting soon becomes a surprising friendship. Charlotte and Bob venture through Tokyo, having often hilarious encounters with its citizens, and ultimately discover a new belief in life's possibilities.

Ryo Murasame is an aircraft pilot, one day he was taking his sister out on a ride along the Amazon when they were shot down by an UFO. They survived, captured by the Badan Empire with his sister killed while Ryo became the Combat Roid known as ZX. His memory is erased by the Badan Empire and worked as their agent of evil. This does not last long as an accident occurs which causes Ryo to regain his memory and escapes Badan. (Wikipedia)

When a new threat from outer space called Galaxy King arrives on Earth seeking an equation for a new type of energy, Skyrider, and the other seven Kamen Riders join forces to fight off the new foe and the armies of Neo-Shocker.

The Dogma Kingdom attacks the Matagi (mountain tribe) village of Yamabiko to steal the sacred Flying Dragon Fortress and wreak havoc all over Japan. Six children from the fallen village take refuge in a nearby town, keeping their identities as Matagi citizens a secret. Kamen Rider Super-1 must protect these children from the Dogma Kingdom, as they hold the secret to the Flying Dragon Fortress' weakness.

King Dark, leader of G.O.D (Government of Darkness) has his scientists create a new monster, Frankenbat. Frankenbat, who was kidnapping females for their blood to survive, tries to kill X Rider. Kamen Rider 1, 2, V3, and Riderman come to help X Rider battle Frankenbat and the forces of G.O.D.

Tachibana Tōbei takes some children to a Kamen Rider roadshow. Just as he's reminiscing about all the heroic modified humans he's lived alongside- Ichigō, Nigō, V3, Riderman, X, Amazon, Stronger and Tackle- the first seven Riders gradually show up to greet him in their human guises, unrecognised by the crowds. When it's revealed that the kaijin onstage are 'real', not actors, the Riders transform to save the crowd and Rider actors, uniting their power to defeat the Delzer Army's true leader...