Who was Vladimir Propp?

Vladimir Yakovlevich Propp was a russian soviet formalist who analysed the basic plot elements of russian folk tales to identify their simplest irreducible narrative elements. After the initial situation is shown, tales takes the following sequence of 31 functions. 

These functions are:

1. ABSENTATION: A member of a family leaves the security of the home environment.
2. INTERDICTION: . The hero is warned against some action (given an 'interdiction').
3. VIOLATION of INTERDICTION. The interdiction is violated (villain enters the tale). 
4. RECONNAISSANCE: The villain makes an attempt at reconnaissance (either villain tries to find the children/jewels etc.; or intended victim questions the villain). 
5. DELIVERY: The villain gains information about the victim. 
6. TRICKERY: The villain attempts to deceive the victim to take possession of victim or victim's belongings (trickery; villain disguised, tries to win confidence of victim). 
7. COMPLICITY: Victim taken in by deception, unwittingly helping the enemy. 
8. VILLAINY or LACK: Villain causes harm/injury to family member (by abduction, theft of magical agent, spoiling crops, plunders in other forms, causes a disappearance, expels someone, casts spell on someone, substitutes child etc., comits murder, imprisons/detains someone, threatens forced marriage, provides nightly torments).
9. MEDIATION: Misfortune or lack is made known, (hero is dispatched, hears call for help etc.)
10. BEGINNING COUNTER-ACTION: Seeker agrees to, or decides upon counter-action. 
11. DEPARTURE: Hero leaves home;
12. FIRST FUNCTION OF THE DONOR: Hero is tested, interrogated, attacked etc., preparing the way for his/her receiving magical agent or helper (donor);
13. HERO'S REACTION: Hero reacts to actions of future donor (withstands/fails the test, frees captive, reconciles disputants, performs service, uses adversary's powers against him);
14. RECEIPT OF A MAGICAL AGENT: Hero acquires use of a magical agent (directly transferred, located, purchased, prepared, spontaneously appears, eaten/drunk, help offered by other characters);
15. GUIDANCE: Hero is transferred, delivered or led to whereabouts of an object of the search;
16. STRUGGLE: Hero and villain join in direct combat;
17. BRANDING: Hero is branded (wounded/marked, receives ring or scarf);
18. VICTORY: Villain is defeated (killed in combat, defeated in contest, killed while asleep, banished);
19. LIQUIDATION: Initial misfortune or lack is resolved (object of search distributed, spell broken, slain person revived, captive freed);
20. RETURN: Hero returns;
21. PURSUIT: Hero is pursued (pursuer tries to kill, eat, undermine the hero);
22. RESCUE: Hero is rescued from pursuit (obstacles delay pursuer, hero hides or is hidden, hero transforms unrecognisably, hero saved from attempt on his/her life);
23. UNRECOGNIZED ARRIVAL: Hero unrecognized, arrives home or in another country;
24. UNFOUNDED CLAIMS: False hero presents unfounded claims;
25. DIFFICULT TASK: Difficult task proposed to the hero (trial by ordeal, riddles, test of strength/endurance, other tasks);
26. SOLUTION: Task is resolved;
27. RECOGNITION: Hero is recognized (by mark, brand, or thing given to him/her);
28. EXPOSURE: False hero or villain is exposed;
29. TRANSFIGURATION: Hero is given a new appearance (is made whole, handsome, new garments etc.);
30. PUNISHMENT: Villain is punished;
31. WEDDING: Hero marries and ascends the throne (is rewarded/promoted).

Apart from these functions, he also concluded that all the characters can be put into 8 broad character types in the 100 tales that he analysed:

1. The villain — struggles against the hero.
2. The donor — prepares the hero or gives the hero some magical object.
3. The (magical) helper — helps the hero in the quest.
4. The princess or prize — the hero deserves her throughout the story but is unable to marry her because of an unfair evil, usually because of the villain. the hero's journey is often ended when he marries the princess, thereby beating the villain.
5. her father — gives the task to the hero, identifies the false hero, marries the hero, often sought for during the narrative. Propp noted that functionally, the princess and the father can not be clearly distinguished.
6. The dispatcher — character who makes the lack known and sends the hero off.
7. The hero or victim/seeker hero — reacts to the donor, weds the princess.
8. False hero — takes credit for the hero’s actions or tries to marry the princess.