
Quick answer — Shin Aomori voices Grand Basque in Fullmetal Alchemist, Shinkichi Gamou in City Hunter 2, Master in City Hunter and 5 more characters.
Shin Aomori voices Grand Basque (Fullmetal Alchemist), Shinkichi Gamou (City Hunter 2), Master (City Hunter), Kibito (Dragon Ball DAIMA), Karato (Mobile Fighter G Gundam), Hildegarn (Dragon Ball Z: Wrath of the Dragon), Umizatou (GeGeGe no Kitaro), Novice Harbinger (Moonrise).
Grand Basque is voiced in Japanese by Shin Aomori.