The Misadventures Of Ryou Onuki/Merchandise

Plushies
Ryou Plushie

Yuri Plushie

Action Figure
Ryou (Normal, Flash and a toy shotgun that comes with pellet shot, and charge shots)

Video Games
The Misadventures Of Ryou Onuki (Game) - October 2009

The Misadventures Of Ryou Onuki 2 (Game) - August 2011

Trivia

 * Ryou's plushie is noticably larger than Ami's