The first of the Kamen Riders that wasn't based on a bug Amazon was actually based on a Komodo lizard. and until Kamen Rider Shin came in 1992 he was also the most violent
Kamen Rider Amazon
It is 1974 in the largely unknown Amazon rainforest here a young Japanese man going by the name of Daisuke lived with a native tribe. A few years back when he was young the plane of his parents crashed for some unknown reason, leaving him orphaned so the Inca tribe took him in. Now in the present day of October the 19th of 1974 his village was attacked by an mysterious evil organisation called Geddon led by the powerful 10-Faced Demon. Daisuke now mortally wounded is taken inside the elder's hut. Where the Elder Bago on his last breath tries his best to use ancient Inca technology and magic to revive Daisuke. After he added the final ingredient, the powerful magic Gi-Gi Armlet which is the reason Geddon was attacking the village in the first place. Now complete Daisuke awoken to hear Bago's last words ''Go to Japan! See Kousaka!......Go to Japan!!..'' after Bago died Daisuke now runs trough the Rain Forest without knowing his true mission, he runs like he`s in a trance avoiding the Spider beastman before being attacked by the 10-Faced Demon. Now having found the edge of the forest he jumps in the ocean and swims for Japan. As soon as the now super powered Daisuke finally arrives in Japan with the help of a lorry boat he secretly hitched a ride on. But he faces trouble the Spider Beastman has been transferred to Japan by Gedon Where he kills allot of people with the help of the Gedon henchwomen. As soon as Amazon gets of the boat they begin to fight like animals. Gaining the temporary upper hand Daisuke flees for an storage place where he finally meets Kousaka and his student Matsuyama, Kousaka gains his trust by showing him the sign that his Amazonian tribe used as a sign of friendship. The short break however was put to a halt when the Spider Beastman came running in. The tree ran in to a storage room where they are instantly greeted by a bundle of glowing purple webs. Amazon tells the two to back off so he can take care of the problem. But as he smashes the webs away it turns out it held a few of minor spider mutants who crawl away. Matsuyama sees a web lowering above their heads and drags the professor away. Amazon regroups with the two and instructs that they should move on. Matsuyama who was going in front was sadly hit by a bundle of killer webs and dies from the affects of them. Amazon and Kousaka run away from a ambush by the Spider Beastman. Sadly when they reach the outside Kousaka is attacked and injured badly by the beastman. Amazon is capable of beating it away and Kousaka was sent to the hospital.