|This article is about a/an rider in Kamen Rider Decade.|
"Amazon" is the original Amazon's incarnation in Kamen Rider Decade.
Daisuke Yamamoto (Kamen Rider Amazon)
He is a man from the Amazon Rainforest who traveled across the world to find a place that he could call home, eventually arriving in Japan where he fights Geddon as Kamen Rider Amazon. Though disillusioned after Masahiko used him to get the GiGi Armlet, Amazon regains his trust in humanity when the boy returns the armlet, finding his place by the Okamura. Afterwards, he aids Decade in battle against Apollo Geist and Llumu Qhimil, forcing Apollo Geist into retreat with his Dai Setsudan and destroying Llumu with his Super Dai Setsudan after Decade equipped him with the GaGa Armlet.
The Original Amazon
- Main article: Daisuke Yamamoto
The World of Amazon two-parter in Decade currently remains the only appearance of the A.R. World Amazon. The Amazon who appears in All Riders vs. Dai-Shocker (which was released around the same time) and post-Decade crossovers is the original Daisuke Yamamoto, now voiced by Tomokazu Seki.
Kamen Rider Amazon
- Eyesight: 100 m. 
- Punching Power: 25 t.
- Kicking Power: 30 t.
- Bite Power: 3 t. 
- Maximum Jump Height: 80 m.
- Maximum Jump Distance: 50 m.
- Maximum Running Speed: 100 m. per 0.9 sec. (one say 8 sec.)
- Amazon Kick: 2 t.
With the GiGi Armlet on his person, Amazon transforms into his Rider form with the cry 'A-MA-ZON!' while pulling his arms inwards and clenching his hands in claws then stretching out and opening his hands. Amazon's human eyes then glow a demonic red as the metamorphosis into Amazon Rider is completed.
- Dai Setsudan (大切断 Big/Great Slice): Amazon's main finishing move. A Rider Chop that cleaves through the flesh of a kaijin with ease. He leaps into the air and comes back down with his claws, slicing into the opponent, normally inflicting grievous, fatal damage to the target.
- Jaguar Shock (ジャガーショック Jagā Shokku): A biting attack.
- Used to destroy Go-Jaraji-Da.
Behind the scenes
- His full name is not given in the television series, but is mentioned in Televi-Kun magazine, which his real name was Daisuke Yamamoto (山本 ダイスケ Yamamoto Daisuke).
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