The protagonists are two freewheeling hippies: Wyatt (Fonda), nicknamed “Captain America”, and Billy (Hopper). Fonda and Hopper said that these characters’ names refer to Wyatt Earp and Billy the Kid. Wyatt dresses in American flag-adorned leather, while Billy dresses in Native American-style buckskin pants and shirts and a bushman hat. The former is appreciative of help and of others, while the latter is often hostile and leery of outsiders.
Comment source: Wikipedia.com