George Frear Runyon (1873-1964) made his stage debut aged 16 and achieved success in vaudeville doing comedy double acts with both his first and second wives. The act can be seen in a Vitaphone short called An Everyday Occurrence (1929).
Mack made his first film in 1925 and racked up well over 400 appearances. He started out in featured supporting roles, but the quality of his parts declined in the talking era.
Nonetheless, Mack made uncredited appearances in no fewer than twenty-two MGM musicals between 1930 and 1956: Love in the Rough, Going Hollywood, A Night at the Opera, San Francisco, A Day at the Races, Broadway Melody of 1938, Thoroughbreds Don’t Cry, Rio Rita, Thousands Cheer, Broadway Rhythm, Two Girls and a Sailor, Thrill of a Romance, Ziegfeld Follies, The Barkeleys of Broadway, Nancy Goes to Rio, The Great Caruso, The Band Wagon, Kiss Me Kate, Easy to Love, Athena, The Glass Slipper and The Opposite Sex.
