
Quick answer — Minoru Inaba voices Sentarou Maeno in Cross Game, Charlie in Mobile Suit Gundam 0080: War in the Pocket, Sakata in Touch and 18 more characters.
Minoru Inaba voices Sentarou Maeno (Cross Game), Charlie (Mobile Suit Gundam 0080: War in the Pocket), Sakata (Touch), Neptune (One Piece Log: Fish-Man Island Saga), Chinan Shishoo (Gundam Build Fighters), Fuji (Pokémon Origins), Don Paolo (Professor Layton and the Eternal Diva), Grandfather Sawatari (Tamayura: Hitotose) and 13 more.
Sentarou Maeno is voiced in Japanese by Minoru Inaba.