Hajime Izu was a Japanese actor whose career spanned several decades, primarily known for his work in film and television. He was born on July 6, 1918, in Tokyo, Japan, and his real name was Hajime Watanabe. His professional career began in the late 1940s, with his first credited film role being in Akira Kurosawa's classic detective drama Stray Dog in 1949.

While the user's query specifies an "anime voice actor," the available information indicates that Hajime Izu is best recognized for his live-action roles in Japanese tokusatsu dramas and films, rather than for voice acting in animated works. He is particularly noted for his portrayals of scientists in the popular superhero genre. Izu played the role of Dr. Nobuhiko Kōmyōji in the television series Android Kikaider (1972) and its sequel, Android Kikaider 01 (1973), as well as in the film Flying at Ya', Android Kikaider (1973). He also appeared as Professor Daidouji in the theatrical film Kamen Rider vs. Shocker (1972).

Beyond his tokusatsu fame, Izu had a long and varied film career, appearing in numerous movies throughout the 1950s and 1960s. His filmography includes notable productions such as Wife (1953) directed by Mikio Naruse, The Three Treasures (1959), and The Eagle of the Pacific (1953). He continued acting into the 1990s, with one of his later roles being in the film The Rocking Horsemen (1992). Hajime Izu passed away in 2005.