Clarence Linden "Buster" Crabbe II (February 7, 1908 – April 23, 1983) was an American Olympic swimmer, and a movie and television actor. He won a gold medal in the 400-meter freestyle at the 1932 Summer Olympics and for playing science fiction hero Flash Gordon in three movie serials. He is the only actor to have played the three most popular pulp fiction heroes of the 1930s — Flash Gordon, Buck Rogers, and Tarzan.