Masahiko Okamura

is the nephew of professor Kōsaka and Amazon'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 Johnan Elementary School.
In Shin Kamen Rider Spirits, Masahiko reappears to support the Riders, who is now a teenager and enjoys cycling.
==Behind the scenes==
===Portrayal===
Masahiko Okamura was portrayed by . Coincidentally, Kamen Rider Amazon premiered on his seventh birthday.
==Appearances==
Category:Kamen Rider Amazon
Category:Allies
Category:Civilian
Category:Amazon Characters