Hiroki Takahashi (高橋 広樹, Takahashi Hiroki) is a Japanese actor, voice actor and singer. His major roles include Eiji Kikumaru in The Prince of Tennis, Tobias in Pokémon, Kenji Harima in School Rumble, Hisoka in Hunter × Hunter (1999), Katsuya Jonouchi in Yu-Gi-Oh! Duel Monsters and Takato Saijō in Dakaichi. On video games, he voiced Ryu in the Street Fighter games. He is married to voice actress Aiko Aihashi.