Mack Gray (December 11, 1905, Brooklyn, New York – January 17, 1981, Beverly Hills, California) was an American actor who was the brother of Joe Gray (actor) and great-uncle of Jon Abrahams.He was given the nickname "Killer" by Carole Lombard due to his roles in films as a tough guy. Longtime friend and confidant of George Raft, Dean Martin, and Frank Sinatra, who often cast him in their films.(1) (2). Gray was a close associate of Dean Martin for close to 35 years. (2)