Propp Narrative and film trailers

Vladimir Propp developed the theory that a narrative is based around characters; that they act as tools to provide structure for the text.
According to him, the main characters in any text included; the villain, the hero, the donor, the helper, the princess, her father, the dispatcher and the false hero.

This poster for 'Warcraft' portrays many characters that the movie revolves around. From the red mist and evil expressions, we can assume that the characters on the left half of the poster are the 'villains' and the characters on the right (with the blue mist) are the 'heroes'. The contrasting colours and side to side placement, clearly shows the division between the two parties and difference in ideals. There is a female at the front, who we can assume is the main character's love interest, or 'princess' according to Propp.





This is the trailer for The Wolf of Wall Street.

The plot is based around the lives of stock brokers; specifically Jordan Belfort. He assumes the role of 'hero', while his friends and employees are the 'helpers', his trophy wife is the 'princess', his best friend is the 'false hero' and his former boss is the 'dispatcher'. Each character plays an important role; which drives the storyline and creates the journey of Jordan's life.
For example, without his helpers, Jordan wouldn't be able to make a successful business and live his luxurious life. Without the 'princess', he wouldn't have a family and without the 'false hero' Jordan wouldn't have suffered his downfall. His former boss was also an important tool in the narrative, because him firing Jordan started his journey.

I think this theory is realistic because a person's life is usually influenced by the people around them. Apart from natural disasters, most narratives are based on the relationships of the main character. Examples include; romantic movies (based on love between people), horror movies (based on evil villains) and action movies (with friends and enemies). Even in a disaster/apocalypse, characters (like friends and family) are also plot devices, as the main character usually has to go on a dangerous journey to save them.
Without a variety of characters that enable or oppose the main character, there is little to drive the main character. Even if a character is alone in a dangerous environment (like Liam Neeson's character in 'The grey'), there would have to be a relationship (e.g. love for their partner) to emotionally drive them to overcome the obstacles presented and to survive in order to reach that person.
A critique of this theory would be that it's too stereotypical for a narrative to be based on these 8 personalities. By putting characters under common headings such as 'princess', they lose credibility as individual people with unique persona's.

For my trailer, I will have some characters that have close relationships with the main character. They will act as tools to help the character in difficult times, give them something to fight for and act as familiar faces which gives them a sense of reality in a nightmarish situation.
However I don't want stereotypical characters, because this will make my trailer cliché. My trailer's plot will be based on the main character; the other characters won't have much impact on the events in the storyline. This is because I want my trailer to focus on the horror factors; it is not for a movie that's based on human relationships or character development.