
Quick answer — Kouki Harasawa voices Hesma in Fantastic Children, Binolt in HUNTER×HUNTER: Greed Island, Takuya Muramatsu in Assassination Classroom and 3 more characters.
Kouki Harasawa voices Hesma (Fantastic Children), Binolt (HUNTER×HUNTER: Greed Island), Takuya Muramatsu (Assassination Classroom), Kouhei Karibuchi (Brave Witches), Bikara (Samurai Deeper Kyo), Rot Spinne (Dies irae).
Hesma is voiced in Japanese by Kouki Harasawa.