Hiro Yūki is a seiyū who was born on February 13, 1965 in Tokyo.
He is part of the seiyū quartet Weiss which also consists of Weiss Kreuz voice castmates Tomokazu Seki, Takehito Koyasu, and Shinichiro Miki.
In June 2007, Yuki changed the spelling of his name to "優希 比呂", which still reads as Yūki Hiro. In addition, he is no longer affiliated with any agency, although his profile is still available in Ken Production.
His anime roles include Alfred Saillune in Slayers NEXT, the teenaged Dende and Sharpner in Dragon Ball Z, Clotho Buer in Mobile Suit Gundam SEED, Claude C. Kenni in Star Ocean EX, and Michel Ninorich in Mobile Suit Gundam: The 08th MS Team.