Isamu Yusen (祐仙勇, born in Osaka on 10 January) is a Japanese voice actor who provides voices for Thomas & Friends.
He is most famous for voicing Ohori from "D-Frag!", Yasu Tsuchida from "Laughing Under the Clouds", Issei Matsukawa and Yutaka Obara from "Haikyū!!", Blue Beetle/Jaime Reyes from "Young Justice", Groot from "Ultimate Spider-Man", Toffee from "Star vs. The Forces of Evil" and Slipstream from "Transformers: Robots in Disguise".