
Quick answer — Shinobu Satouchi voices Giru in Dragon Ball GT, Hiroaki Koshino in Slam Dunk, Shichiro Washio in Detective Conan: Crossroad in the Ancient Capital and 1 more characters.
Shinobu Satouchi voices Giru (Dragon Ball GT), Hiroaki Koshino (Slam Dunk), Shichiro Washio (Detective Conan: Crossroad in the Ancient Capital), Cacao (Dragon Ball Z: The Tree of Might).
Giru is voiced in Japanese by Shinobu Satouchi.