Vladimir Propp was a scholar who proposed that narratives follow a structure involving 8 character types: the hero, villain, donor, dispatcher, false hero, helper, princess, and the princess's father. Propp suggested all stories contain a struggle where the hero is harmed but ultimately overcomes the villain, restoring order. He also noted stories typically include a recognition scene where the hero is recognized, false characters are exposed, false heroes may be punished, and the hero receives their reward. Propp's theory has influenced many successful film narratives by providing a template for key characters and plot points.