Kesshisen 7-nin Rider

Fans the world over have long been enthralled by tales of Kamen Rider, the masked, motorcycle-riding superhero who protects the world from injustice. Kidnapped and experimented upon by the evil terrorist organization known as Shocker, Hongo Takeshi manages to escape their clutches and use his newfound strength to fight against their schemes. These are the first adventures in a legacy that spans dozens of television series and films, drawn and written by series creator and manga superstar Shotaro Ishinomori. (Source: Seven Seas Entertainment)

"Amazons", wild youths in the jungle, are remodeled by the ancient science of Inca. With the "Bracelet of Gigi," the key that opens the door to the hidden treasure, in his arms, he protects the treasured weapons and weaponry, as well as the future of mankind...! The enemy is Gorgoth, a ten-faced demon who plans to conquer the world with the "Bracelet of Gaga," a pair of keys! In addition, there is a storyboard manga "Kamen Rider," an experimental new format of storyboard manga.

It's Kamen Rider Stronger in manga.

Doctor Keitarō Shido, an acclaimed scientist, has been kidnapped by the terrorist organization Neo Shocker in order to exploit his expertise in robotics technology. Desperate to escape, he convinces Neo Shocker command to allow him to operate on an injured camper. Explaining that he can turn the camper, Hiroshi Tsukuba into a powerful Neo Shocker warrior, they allow Doctor Shido to operate. However, he quickly turns the tables on them, transforming Hiroshi not into an evil monster, but into the powerful warrior Skyrider, using his new found abilities to combat the evil Neo Shocker menace.

An omnibus containing all three versions of Kamen Rider ZX.