
Quick answer — Masachika Ichimura voices Tatsuo Senou in Giovanni's Island, Red XIII in Final Fantasy VII: Advent Children, Hippocrates in The Wonderland and 1 more characters.
Masachika Ichimura voices Tatsuo Senou (Giovanni's Island), Red XIII (Final Fantasy VII: Advent Children), Hippocrates (The Wonderland), Amret (Scarlet).
Tatsuo Senou is voiced in Japanese by Masachika Ichimura.