The document describes the common character archetypes found in the hero's journey story structure. These include the hero, who goes on a quest for wisdom; the herald, who presents a challenge that propels the story; and the mentor, who guides and advises the hero. Other archetypes mentioned are the threshold guardians, trickster, shapeshifter, and shadow characters. Examples of each archetype are provided from popular films like Star Wars, Harry Potter, and The Wizard of Oz.