Kamen Rider Amazon has to be one of the oddest Kamen Riders I've seen - but he also seems like a fun character, if not a bit different. Orphaned in the Amazon, Daisuke Yamamoto is raised by a peaceful tribe, until they are attacked by Gorgos. Before dying the elder transforms Daisuke into Kamen Rider Amazon.
This series only last 24 episodes - the shortest run ever for a Kamen Rider series. No Belt was used for transformation, and I can't imagine the forest being a great location for a motorcycling hero. I can't be sure, but the series not have been received as well as other more traditional Kamen Rider series. (Though, don't let a short production run be Amazon's deciding factor, as Decade is only running 30 episodes, and it seemed fairly popular)
Either way, it turns out Amazon is getting somewhat of a revival in Decade episodes. Amazon's World seems to be Decade's last stop before his series ends. Although Amazon is different from the other Riders, I'm glad I got to see what the character is like in action. He seemed like a charming enough character, and his animal like personality makes a nice change of pace when compared to the other Riders.
Here are some images of Kamen Rider Amazon