This article is about a/an ally in Kamen Rider Amazon.
For his A.R. World counterpart seen in Kamen Rider Decade, see Masahiko Okamura (A.R. World).

Masahiko Okamura (岡村 まさひこ Okamura Masahiko): The nephew of professor Kōsaka and Daisuke's first friend in Japan, helping him in anyway he can. In Episode 13, it is shown that Masahiko teaches Amazon to speak coherent Japanese. Masahiko attends Jonan Elementary School.

In Shin Kamen Rider Spirits, Masahiko reappears to support the Riders, who is now a teenager and enjoys cycling.
Masahiko Okamura (Spirits)

Teen Masahiko

Behind the scenes


Masahiko Okamura was portrayed by Yōji Matsuda (松田 洋治 Matsuda Yōji). Coincidentally, Kamen Rider Amazon premiered on his seventh birthday.


Kamen Rider
Daisuke Yamamoto
GiGi Armlet - Condorer - Jungler - GaGa Armlet
Tōbei Tachibana - Masahiko Okamura - Ritsuko Okamura - Mole Beastman - Elder Bago - Professor Taro Kosaka
Ten-Faced Demon Gorgos - Red Followers
Spider Beastman - Vampire Bat Beastman - Mantis Beastman - Large Centipede Beastman - Mole Beastman - Porcupine Beastman - Snake Beastman - Crocodile Beastman - Crab Beastman - Black Cat Beastman - Snail Beastman - Ant Beastman - Dobsonfly Beastman
Garanda Empire
Zero the Great - Ruler - Black Followers
Bee Beastman - Diving Beetle Beastman - Toad Beastman - Tiger Beetle Beastman - Owl Beastman - Mushroom Beastman - Sea Anemone Beastman - Japanese Dwarf Flying Squirrel Beastman - Salamander Beastman
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