Character theories are analytical frameworks used to understand character roles in media. Vladimir Propp's narrative theory proposed that there are 7 broad character types that typically appear in stories, including the villain, donor, helper, princess, false hero, dispatcher, and hero. Propp's theory was developed by analyzing Russian folktales. The Star Wars trilogy is a well-known example where Propp's character types can be seen, such as Darth Vader as the villain, Obi-Wan Kenobi as the donor, and Luke Skywalker as the hero, though George Lucas adapted rather than strictly followed Propp's theory.