Shintarō Asanuma (Jan 5, 1976-) is a Japanese scriptwriter, actor, director, singer, stage actor, and voice actor affiliated with Office Osawa. Some of his most notable roles in voice acting include Ken Kaido from Mazinkaiser SKL and Crow Hogan from Yu-Gi-Oh! 5Ds. He voices Akira Fudo in the OVA crossover film Cyborg 009 vs. Devilman
While a diverse talent, Shintaro preferred working in stage theater until he became a voice actor full time, and still does scripts for plays on occasion.