Who were some of the popular film stars from the 1920s?

Charlie Chaplin was, perhaps, one of the most famous physical comedians ever. His persona, in live theater, was that of a drunken audience patron, which led to the creation of his most well-known character, the Little Tramp. Harold Lloyd had a penchant for bespectacled characters who served as the foil for many different people, while Harry Langdon developed the character of an overgrown baby.