Lincoln Kilpatrick in "Lifeboat" (1944): Kilpatrick played a young African-American sailor named Joe, who is one of the survivors stranded in a lifeboat after their ship is sunk by a German U-boat.
Ruby Dandridge in "To Catch a Thief" (1955): Dandridge played Danny, the maid of wealthy American widow Jessie Stevens (Grace Kelly).
Louis Dean Parks Jr. in "The Birds" (1963): Parks played Annie Hayworth, the assistant to Melanie Daniels (Tippi Hedren).
Charles White in "Marnie" (1964): White played Mark Rutland, the brother of Marnie's husband, Mark Rutland (Sean Connery).
These actors all made significant contributions to Hitchcock's films, and their performances helped to add depth and diversity to his work.