Roscoe Karns (September 7, 1891 – February 6, 1970) was an American actor who appeared in nearly 150 films between 1915 and 1964. He specialized in cynical, wise-cracking (and often tipsy) characters, and his rapid-fire delivery enlivened many comedies and crime thrillers in the 1930s and 1940s.Arguably his best-known film role was the annoying bus passenger Oscar Shapeley, who tries to pick up Claudette Colbert in the Oscar-winning comedy It Happened One Night (1934).