Hirotaka Suzuoki (鈴置洋孝 Suzuoki Hirotaka) was a Japanese voice actor who voiced Giovanni in Pokémon. He died on August 6, 2006 from lung cancer. After Suzuoki's death Kenta Miyake took over the role of Giovanni.
- Ted Appenheimer (Case Closed)
- Dangaizer (Dangaizer 3)
- Tien Shinhan (Dragon Ball, Dragon Ball GT, Dragon Ball Z and Dragon Ball Z: The History of Trunks)
- World Martial Arts Tournament Announcer, Mez, Other World Tournament Announcer, Caroni, Mr. Shu and Captain Chicken (Dragon Ball Z)