Unshô Ishizuka

, better known as , is a Japanese voice actor from Katsuyama, Fukui. He is affiliated with Aoni Production and is known for providing the voice of both the narrator and Professor Oak on the Japanese anime series, Pokémon. In addition to that, he regularly appears in both the Japanese and English-language versions of the Pokémon anime, voicing Onix, Steelix and numerous other Pokémon. Ishizuka is known for his deep, strong voice and is often cast in the role of older mature male characters, such as Jet Black from Cowboy Bebop, Eugene Gallardo from Tales of Rebirth and Captain Matthews in the Xenosaga trilogy. He is also the Japanese dub voice of Captain Gantu in every version of Lilo & Stitch to date. He is also the current Japanese voice of both Heihachi Mishima in the Tekken video game series, and Mr. Satan in the Dragon Ball franchise, taking over both roles since the death of longtime actor Daisuke Gōri. Recently, he has taken on the role of the senior Joseph Joestar in JoJo's Bizarre Adventure: Stardust Crusaders and in JoJo's Bizarre Adventure: Diamond Is Unbreakable.