Many of the monsters Kamen Rider X faced were based on Greek mythology and later on various animals and historic figures. Kamen Rider Amazon ( 仮面ライダーアマゾン Kamen Raidā Amazon ) This series aired from 1974 to 1975 and ran with just 24 episodes - making it the shortest Kamen Rider series to date. Daisuke Yamamoto, an orphan lost in the Amazon has grown up with an Amazon tribe and lead a peaceful life until his tribe was attacked by Gorgos. Before dying, his tribe elder turned Daisuke into Kamen Rider Amazon. This was the first Kamen Rider not to use a belt to transform. This was also the first series not to have any previous Kamen Riders appear, although Amazon meets his seniors in the next series. Kamen Rider Stronger ( 仮面ライダーストロンガー Kamen Raidā Sutorongā ) This series aired in 1975 and ran for 39 episodes.

This was intended to be the final Kamen Rider series. Shigeru Jou joins Black Satan after the murder of his best friend and mentor. Knowing the organization to be the culprits, he allows himself to undergo an operation that changes him into Kamen Rider Stronger. Later on, Black Satan is defeated and a new group known as Delza becomes the series enemy. Stronger is later joined by Electro Wave Human Tackle, a female warrior who later sacrifices herself to save Stronger from a powerful opponent. This was also the first series to have a temporary power up for the main character. Kamen Rider (Skyrider) ( 仮面ライダー（スカイライダー） Kamen Raidā (Sukairaidā ) This series aired from 1979 to 1980 and ran for 54 episodes. Hiroshi Tsukaba is kidnapped and transformed into Kamen Rider as a means to help Doctor Shiro escape Neoshocker.

During the course of the series, former Kamen Riders appear and Kamen Rider is dubbed Skyrider by Kamen Rider Stronger to differentiate him from the original Kamen Riders.

Kamen rider amazon flash belt