Hiroya Ishimaru (石丸 博也, Ishimaru Hiroya; born Shinji Ishide (石出 伸二, Ishide Shinji), February 12, 1941) is a retired Japanese actor, voice actor, and narrator most famous for voicing Koji Kabuto in the 1972 series Mazinger Z and its sequels, and for being the official Japanese dub voice for Jackie Chan. He is also a fluent English speaker. On April 27, 2023, Ishimaru announced his retirement from voice acting, though he continues to work in a limited capacity dubbing Chan in films.
Source: “Hiroya Ishimaru”, English Wikipedia (CC BY-SA 4.0), excerpt