
Quick answer — Yoshiyuki Shimozuma voices Simon in Orb: On the Movements of the Earth, Kenjirou Shirasu in Ace of the Diamond act II, Taisei Yoshida in Assassination Classroom and 6 more characters.
Yoshiyuki Shimozuma voices Simon (Orb: On the Movements of the Earth), Kenjirou Shirasu (Ace of the Diamond act II), Taisei Yoshida (Assassination Classroom), Voss (BEASTARS), Nariyuki Koshimizu (Baby Steps), Bobby (Teekyuu 2), Tenchou (Etotama), Yuutarou Ichinose (JORAN THE PRINCESS OF SNOW AND BLOOD) and 1 more.
Simon is voiced in Japanese by Yoshiyuki Shimozuma.