Rachel from The Dark Knight does draw inspiration from the comics. But filmmakers often take creative liberties to make the character more suitable for the specific movie plot and audience expectations.
Another great one is 'Batman: Year One'. It details Bruce Wayne's early days as Batman, his struggles with the police force, and how he starts to make a name for himself in Gotham. It's a great origin - story type of tale that gives depth to the character.
The 2008 'Batman Dark Knight' story is a dark and gritty exploration of heroism and villainy. The Joker's actions force Batman to confront his own limits. He sets up situations that test the resolve of the citizens of Gotham, like the ferry scene. Meanwhile, Batman has to operate in the shadows, facing the threat of being hunted by the police due to the actions of the Joker and the chaos he causes.
A popular 'Batman Dark Knight' fanfiction is 'Joker's Last Laugh'. It offers a different take on the Joker's final plan and how Batman counters it. The story is full of twists and turns. Then there's 'Robin's Return in the Dark Knight Era' which imagines Robin making a comeback during the events of 'The Dark Knight'. It gives a fresh perspective on how the dynamic between Batman and Robin could have been in that darker version of Gotham.
A popular 'Batman The Dark Knight' fanfiction is 'Batman and the Secret Society'. In this story, Batman discovers a hidden society within Gotham that has been pulling the strings all along. 'The Dark Knight's Final Battle' is another one that's full of action. It pits Batman against a powerful new villain. And 'Harley Quinn's Redemption Arc' is a great read for those interested in seeing the character develop in a different way than in the official canon.
In 'Batman Dark Knight Rises', the story kicks off with Gotham in a false sense of peace. But then Bane arrives. He's a brute who wants to fulfill Ra's al Ghul's vision of destroying Gotham. Batman, who has been out of the game for a while, is forced to return. He has to deal with not only Bane's physical strength but also his own inner demons. The story is filled with twists and turns, including the revelation of Miranda Tate's true identity. It's a tale of redemption, heroism, and the fight for a city's soul.
The novel Batman: The Dark Knight is primarily based on the rich and complex lore of Batman from DC Comics. It takes inspiration from his battles against villains, his internal struggles, and the themes of justice and morality that are central to his character.
One storyline could be that Jason discovers a plot against Batman early on. He then sets up a counter - plan and at the crucial moment, jumps in to save Batman from a deadly trap. This would show Jason's intelligence and his lingering care for Batman despite their past issues.