Chapter 2 - Tanner McChristian

 An element that I think is all too neglected when it comes to crafting a great story is honestly just making the antagonist and protagonist, and their dynamic with each other a memorable core component of the film's narrative. Having an antagonist that is not only the antithesis of  the protagonist, but also shares some of the same traits as them is a great way to make the inter person dynamics between them fascinating to watch. 

https://www.youtube.com/watch?v=Ga0rs2G8BGI

Here's a great video by 'The Closer Look' on youtube that does an excellentt job at explaining this dynamic bettween the Joker and Batman in The Dark Knight.