
Quick answer — Rokuro Naya voices Honinbou Kuwabara in Hikaru no Go, Tellit in Future Boy Conan, Bunta Takakura in Shin Chan and 11 more characters.
Rokuro Naya voices Honinbou Kuwabara (Hikaru no Go), Tellit (Future Boy Conan), Bunta Takakura (Shin Chan), Schroder (Professor Layton and the Eternal Diva), Camus (Saint Seiya: Knights of the Zodiac), Kiserujii (Xam'd: Lost Memories), Nazonazo Hakase (Zatch Bell!), Hideyoshi Hata (Psychic Detective Yakumo) and 6 more.
Honinbou Kuwabara is voiced in Japanese by Rokuro Naya.