Character archetypes are universal symbols or themes that represent typical roles in storytelling. They help audiences quickly understand a character's traits and motivations. Common archetypes include the Hero, who embarks on a journey; the Mentor, who provides guidance; and the Villain, who opposes the hero. These archetypes can be found across various cultures and genres, making them relatable and recognizable. By using archetypes, writers can create compelling narratives that resonate with readers. Examples of archetypes can be seen in literature, film, and mythology, such as Harry Potter as the hero and Darth Vader as the villain.