Sunazuka studied kabuki theater in college, and went on to join the Haiyuza training school in 1958. He graduated just in time to debut in Kihachi Okamoto’s 1961 film Big Shots Die at Dawn. Sunazuka appeared in a variety of films, although he’s apparently best suited for comedic roles. He is best known as the brown-sweater clad castaway in Godzilla vs. the Sea Monster (1966).