Vladimir Propp
Plot, visuals, and theme are all hugely important to great cinema, but movie audiences love characters, and they remain the most memorable aspect of many films. However, the same character types appear again and again in film – the heroes, the villains, the sidekicks and the damsels in distress. We simply accept this as a part of cinema, and of stories in general, and it’s because all stories follow the same narrative structure, according to Russian theorist Vladimir Propp.