
Quick answer — Hiroki Shimowada voices Toboe in Wolf's Rain, Shinji Inukai in Hiiro no Kakera: The Tamayori Princess Saga 2, Toshikazu Hazamada in JoJo's Bizarre Adventure: Diamond is Unbreakable and 8 more characters.
Hiroki Shimowada voices Toboe (Wolf's Rain), Shinji Inukai (Hiiro no Kakera: The Tamayori Princess Saga 2), Toshikazu Hazamada (JoJo's Bizarre Adventure: Diamond is Unbreakable), Shoyo Takahama (Bakuman. 2), Kazuki Kohori (Lovely Complex), Towa Mitsuchi (Towanoquon: Eternal Quon), Ranmaru Mori (Sengoku Basara: Samurai Kings), Tivey Pearlbaton (Re:Zero kara Hajimeru Kyuukei Jikan (Break Time) 2nd Season) and 3 more.
Toboe is voiced in Japanese by Hiroki Shimowada.