
Quick answer — Kiyoyuki Yanada voices Takenori Akagi in Slam Dunk, Gateau Mocha in Sorcerer Hunters, Andreas Darlton in Code Geass: Lelouch of the Rebellion and 19 more characters.
Kiyoyuki Yanada voices Takenori Akagi (Slam Dunk), Gateau Mocha (Sorcerer Hunters), Andreas Darlton (Code Geass: Lelouch of the Rebellion), Thymilph (Gurren Lagann), Ginji Matsuzaki (Black Lagoon: The Second Barrage), Andre Camel (Detective Conan: Dimensional Sniper), Sudou (Kyou kara Ore wa!!), Andromon (Digimon Tamers) and 14 more.
Takenori Akagi is voiced in Japanese by Kiyoyuki Yanada.