Hiro Shimono

Hiro Shimono is a Japanese voice actor and singer born on April 21, 1980, in Tokyo. Active since the early 2000s, he has spent more than two decades building a career across anime voice acting, character performances, and solo music, and he has lent his voice to iconic characters in anime while developing a reputation for a versatile vocal range. His solo work blends pop and rock with high energy and emotional weight, and he releases music through Pony Canyon, reinforcing his profile as a seiyuu-singer with a long-running presence in anime-related music. Among his best-known anime music credits is 'Soul Flag,' the opening theme for Ace of Diamond Act II, which helped define the connection between his acting work and theme-song performances. Shimono is also known for his charismatic personality and for winning the 'Best Karaage-nist' award multiple times, a detail that has become part of his public image. In 2026, he continued to stay visible across entertainment by joining Daisuke Namikawa as a new Thursday MC on Seiyuu to Yoru Asobi and appearing in the cast of the summer anime Tenmaku no Jadoogar.