If you watch the movie starring Joaquin Phoenix, the movie is a good fit for him to become a Joker.
The Origin Story of Joker is the man named Arthur Fleck which is a Failed Comedian.
But because he is Bullied and was Disregarded by Society, He transforms himself into a Criminal Mastermind known as a “Joker.”
The point is, The Joker is not a Joke, he becomes a Joker because he is Criminal Mastermind and the most terrifying Villain that has ever been created.
This is How the Writer must write a Novel.
The question is, What is the origin story of those characters that you write? When you show that origin story? and Who do they become when you show that origin story?
P.S: By the way, this is How I write my first book Love at First Write (a novella) which is available here:
Mark Tacastacas 
You must be logged in to post a comment.