American jack-of-all-trades Carl Harbaugh did just about everything in motion pictures except cater the lunches on location. As an actor, Harbaugh was seen in such roles as Escamillo in the Theda Bara version of Carmen (1915). His directorial credits include the 1917 adaptation of Hawthorne's The Scarlet Letter. Concentrating more and more on comedy as the twenties wore on, Harbaugh wrote scenarios and dreamed up gags for Mack Sennett, Hal Roach, Harold Lloyd, Buster Keaton, Laurel & Hardy and many others, keeping his hand in acting as a supporting player. He was famous for his tendency to rely on outlandish comedy props to get his characters in and out of trouble. Carl Harbaugh returned to acting full-time in the early 1940s.