Teruo Ishii (石井輝男, Ishii Teruo; January 1, 1924 – August 12, 2005) was a Japanese film director best known in the West for his early films in the Super Giant series, and for his films in the ero guro ("erotic-grotesque") subgenre of sexploitation such as Shogun's Joy of Torture (1968). He also directed the 1965 film Abashiri Prison, which helped to make Ken Takakura a major star in Japan. Referred to in Japan as "The King of Cult", Ishii had a much more prolific and eclectic career than was generally known in the West during his lifetime. (Via Wikipedia)
