Hōsei Komatsu was a Japanese actor and voice actor, born on November 4, 1924, in Nagano Prefecture, and passed away on July 11, 2003. While he was a prolific and celebrated figure in Japanese cinema, with a career spanning over four decades and more than 100 live-action film appearances, his work in anime voice acting represents a smaller, yet notable, facet of his professional life. He is often recognized for providing voices in various anime films and television specials from the 1960s through the 1980s.

His voice acting credits include several of the specific roles mentioned. He voiced the character Beauty Smith in the anime series Shiroi Ki Ba White Fang Monogatari. In the 1981 anime film Yuki, he is credited with the role of Oyakata, the master. That same year, he took on the role of Frankenstein's Monster in the anime film Kyōfu Densetsu: Kaiki! Frankenstein. His work in the 1960s includes the role of Onikichi in the 1967 anime film Band of Ninja. He also contributed his voice to the 1965 television series Kaitō Pride. One of his later voice acting credits was in the 1995 animated film Lupin the Third: Farewell to Nostradamus. Information regarding a role in a production titled A Time Slip of 10000 Years: Prime Rose could not be confirmed from the available search results.

Throughout his career, Komatsu was known for his distinctive, often gruff voice, which made him a frequent choice for characters with authority or a menacing presence, both in live-action and animated works. His extensive live-action filmography includes collaborations with renowned directors such as Nagisa Oshima, appearing in films like Death by Hanging and The Ceremony, and with Shunya Ito in the seminal Female Prisoner Scorpion: Jailhouse 41. This body of work in live-action cinema remains his primary legacy. His contributions to anime, though fewer in number, provided a distinct and powerful voice to the characters he portrayed, adding to the richness of the projects in which he was involved.