The United Artists Cofounder was Charlie Chaplin, a seven-letter word. Chaplin was an iconic British actor, comedian, and filmmaker who rose to fame in the silent film era. He was a pioneer of the slapstick style of comedy and is considered one of the most important figures in the history of the film industry. Chaplin cofounded United Artists in 1919 with Mary Pickford, Douglas Fairbanks, and D.W. Griffith.