
Quick answer — Hiroshi Watanabe voices Natsuki Sakaki in THE IDOLM@STER Side M, Dallas Hudson in Let’s Play, Satou in Outburst Dreamer Boys (TV) and 1 more characters.
Hiroshi Watanabe voices Natsuki Sakaki (THE IDOLM@STER Side M), Dallas Hudson (Let’s Play), Satou (Outburst Dreamer Boys (TV)), Yuuichirou Kiryuu (My Instant Death Ability is Overpowered).
Natsuki Sakaki is voiced in Japanese by Hiroshi Watanabe.