No main cast listed for this episode.
Kamen Rider — S21E1
Episode: Medal, Underwear, Mysterious Arm
Air Date: 2010-09-05
Runtime: 25 min
Overview
A mysterious arm reawakens the Greeed from their slumber and decides to use Eiji Hino, a cheerful wanderer, as his means of getting back what he desires as Kamen Rider OOO.