Osamu Saka (阪 脩, Saka Osamu, born November 7, 1930 in Osaka, Osaka Prefecture) is a Japanese actor and voice actor who works for Aoni Production.He is most known for the roles of Wheeljack in the Japanese dub of (The Transformers), as well as Chief Seitaro Sakaki (Patlabor), Dr. Jotaro Honma (Black Jack), and Daisuke Aramaki (Ghost in the Shell).