NB Of course there are spoilers for The Force Awakens (2016) below.
[Add V. Propp Russian folklore motifs.]
[This post is still being written and may appear somewhat incoherent at times until it settles down]
[Insert references to Propp's compartive folklore.... ]
Please excuse the bad image quality.
In the "King in the Mountain" motif, a great king from the past who has disappeared is secretly hidden in a mountain, often with a retinue of armed warriors, and he will return one day to save the country from destruction. Of course at the end of the film, Rey uses the map to travel to an island world where Luke Skywalker has retreated and hands him his old light saber. Will the King return to lead his people to freedom?
But what about modern fiction whether written or broadcast? Are there new classifications? Should we start having a regular addendum to the classic Propp folklore classifications?
If so, one of those classifications might be called "the Mary Sue character".
It is alledged by some that Rey in The Force Awakens is a Mary Sue character. She comes out of nowhere, she can fly the Millenium Falcon, saves Finn from the monsters, defeats Ren, saves the map, finds Luke Skywalker who is probably her father, and so forth.
But perhaps she will be one day. Perhaps academic folkloric analysis should elevate the Mary Sue motif to the level of "the evil villain stops to describe his vile plot to take over the world" and other standards of the current cinema, such as the fight between giant robots, and recognize that a whole new set of motifs has been created to serve the collective unconsciousness of our folk.
Here is an article in Forbes Magazine about the Mary Sue controversy.