It’s probably a popular opinion but I’m fascinated by the Joker in The Dark Knight movie because his origin story, something that all superheroes/villains have, is always changing, always in flux. This, I think, is why the character is such a great foil to Batman. We all are familiar with Batman’s origin, but the Joker’s is unclear. “You wanna know how I got these scars?” he asks, always with a different story.
This lack of an origin story is something that I struggled with for years. With FA being so rare and unknown I often had (and sometimes still do) a shifting origin story depending on who is asking. “Why do you use a wheelchair?” they ask, and how obligated am I to give an honest answer?