The Reiji Oyama Ohendan, also known as the "Japanese Cheering Party" in Power Instinct, are a group of male cheerleaders who cheer Reiji onward to victory and sing his theme song "Otoko no Karatemichi" in Power Instinct 2, the original Japanese version of Power Instinct Legends, and Goketsuji Ichizoku Matsuri Senzo Kuyou. It is said that Reiji tends to do his best when he is cheered on by them. In Power Instinct 2 and Power Instinct Legends they were voiced by all the male members of the development team.
- Power Instinct
- Power Instinct 2
- Power Instinct Legends
- Goketsuji Ichizoku Matsuri Senzo Kuyou