More than a decade after The Dark Knight, The Batman 2 can pay off Nolan's biggest villain's sequel tease. After Zack Snyder placed Batman alongside other heroes in the team-up movies Batman v Superman: Dawn of Justice and Justice League, The Batman saw the caped crusader go back to his detective roots in the first soloBatman film since The Dark Knight Rises. While not an origin story, The Batman featured a younger Bruce Wayne during year two of his vigilante career, meaning that many Batman storylines and characters can yet be adapted.
Before The Dark Knight Rises' eight-year time jump, Nolan's Batman films were also focused on the early days of Batman's career. Batman Begins mixed elements from comic books like Year One as well as original ideas and created an origin story that grounded the character in reality, which prompted the sequel The Dark Knight to be different from anything in the superhero genre. Still a measure for success for comic book adaptations to this day, The Dark Knight proved that it was possible to blend other genres such as crime thrillers into a superhero adventure. Besides the writing and direction, much of The Dark Knight's success had to do with Heath Ledger's portrayal of the Joker – a version of the character that perfectly fit into Nolan's realistic world.
Related: The Batman's Riddler vs. Dark Knight's Joker: Who Is The Better Villain?
That said, Joker's unpredictable behavior and use of theatrically were the key to evolving Nolan's realistic world into something that, while still grounded in reality, could make use of Batman's rich mythos of supervillains. This aspect is proved by the line «This city deserves a better class of criminals. And I'm gonna give it to them.». Joker's line
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