Quick answer — Yuuji Kameyama voices Kuma Kaijin in Acro Trip, Mosuke in Sword of the Demon Hunter: Kijin Gentosho, Tetsuro Iwai in A3! Season Spring & Summer and 4 more characters.
Yuuji Kameyama voices Kuma Kaijin (Acro Trip), Mosuke (Sword of the Demon Hunter: Kijin Gentosho), Tetsuro Iwai (A3! Season Spring & Summer), Tobias (Saving 80,000 Gold in Another World for My Retirement), Rhode (A Journey Through Another World: Raising Kids While Adventuring), Ishimaru (Sakuna: Of Rice and Ruin), Male Employee (Shachibato! President, It's Time for Battle!).
Kuma Kaijin is voiced in Japanese by Yuuji Kameyama.
