Yamaguchi Kappei roles (games)
Kappei has done the following roles in games.
| Breath of Fire III | Rei |
| Der Langrisser [PC FX] | Hein |
| Friends Seishun no Kagayaki [Sega Saturn] | Kurakake Fujio |
| Grandia [Sega Saturn] | Rap |
| Harukaze Sentai V Force [Playstation] | Ikuto |
| Houma Hunter Lime Perfect Collection [Sega Saturn] | Birth |
| Kidou Senshi Gundam Climax U.C. [PlayStation 2] | Tobia |
| Langrisser I and II [Playstation] | Hein |
| Misa no Mahou Monogatari [Playstation] | Firim |
| Persona 4 [PlayStation 2] | Kuma |
| Ranma 1/2 [PC Engine] | Saotome Ranma |
| Ranma 1/2 Battle Renaissance [Playstation] | Saotome Ranma |
| Ranma 1/2 Byakuran Aika [MegaCD] | Saotome Ranma |
| Ranma 1/2 Datou, Ganso Musabetsu Kakutouryuu! [PC Engine] | Saotome Ranma |
| Ranma 1/2 Torawareno Hanayome [PC Engine] | Saotome Ranma |
| Real Bout Garou Densetsu [Arcade, Neo Geo] | Jin Chonrei |
| SF Androgal [Windows] | Ringo |
| Shin Fortune Quest [Playstation] | Trap |
| Super Robot Taisen Original Generations [PlayStation 2] | Task |
| Tengai Makyou Shinden/Kabuki Klash [Arcade, Neo Geo] | Kabuki Danjuro |
| Triangle Again [PlayStation 2, Xbox] | ? |