In order to make his Oswald cartoons look "real", Disney turned away from the styles of Felix the Cat, Koko the Clown, Krazy Kat and Julius the Cat and began emulating the camera angles, effects and editing of live-action films. To learn how to base gags on personality and how to build comic routines, rather than heaping one gag after another, he studied Laurel and Hardy, Harold Lloyd, Charlie Chaplin and Buster Keaton. In order to stir emotion in an audience, Disney studied and scrutinized the shadow effects, cross-cutting and staging of action in films featuring Douglas Fairbanks and Lon Chaney.