A stage actor since the 1920s, Kenneth MacDonald found the going rough in Hollywood until he published and distributed a pamphlet titled "The Case of Kenneth MacDonald." This little self-promotional book brought him to the attention of studio executives, and throughout the 1930s MacDonald could be seen as a mustachioed, mellifluous-voiced villain in scores of westerns and melodramas. His work in the Charles Starrett westerns at Columbia led to a lengthy association with that studio. From 1940 through 1954, MacDonald played featured roles in such Columbia productions as Island of Doomed Men (1940), Power of the Whistler (1945) and The Caine Mutiny (1954); he was also prominently cast in the studio's short subjects, especially in the comedies of the Three Stooges and Hugh Herbert, his most familiar role being that of a society criminal or shyster lawyer. During the 1960s, Kenneth MacDonald was a semi-regular on the Perry Mason TV series, playing a solemn judge.