Another storyline could be about Batman training a new protege. We could see how he imparts his skills and values, like justice and self - sacrifice. It might also involve the protege struggling with the dark nature of Gotham and the weight of the Batman mantle.
There could be a storyline where Gotham is hit by a new and mysterious plague. Batman has to not only deal with the chaos in the city but also find the source of the plague. This could involve teaming up with unlikely allies, such as some of the more reclusive scientists in Gotham, and facing off against those who want to use the situation for their own gain.
One interesting storyline could be Harley Quinn trying to break free from the Joker's control. In fanfiction, she might start to realize his true nature of using her and decides to rebel. This could lead to a power struggle between them.
A third storyline could be Harley Quinn becoming a vigilante of her own kind. Tired of the chaos and destruction caused by the Joker and other villains, she decides to use her skills and knowledge to fight crime in her own way. She might not be as morally upright as Batman, but she has her own code. She could target criminals who are preying on the weak, and in the process, have run - ins with both the police and the traditional superheroes.
Batman is obviously one of the most popular. In fanfiction, we often see different takes on his character, like a more vulnerable Batman or an even more hardened version.
One idea could be exploring the backstories of the characters in more depth. For example, you could write about how a particular character came to possess their unique powers in the Dark Legacy 2 universe. Another idea is to create an alternate ending to the game's story. Maybe in your fanfiction, the main villain has a change of heart and teams up with the heroes. Or you could focus on a side character and give them a more prominent role, like a minor mage who ends up saving the day through their unexpected magic abilities.
One interesting storyline could be about a ranger from a different dimension joining the Legacy Wars. They might bring unique powers and a different perspective on how to fight. For example, a ranger from a dimension where technology is more advanced but nature is scarce could struggle with the balance of power in the Legacy Wars.
One interesting dark knight fanfiction could be about the Joker having a different origin story. Maybe he was once an ordinary man pushed to the edge by Gotham's corruption. Another could be a story where Batman teams up with a new, unexpected ally from the criminal underworld to take on a greater threat. And there could also be a fanfiction focusing on Bruce Wayne's early days as Batman, his struggles and how he learned to master his skills.
A cool plot for Gauntlet Dark Legacy fanfiction could be an alternate universe scenario. In this, the roles of good and evil are reversed. The heroes find themselves in a world where they are hunted as the villains. Or perhaps a story where the characters discover a hidden power within the gauntlet that has the potential to either save or destroy the entire game world, and they must decide what to do with it. Also, a story about the formation of the teams that we see in the game could be interesting.
One interesting 'dark knight joker fanfiction' story could be about the Joker's origin from a different perspective. Maybe he was once an ordinary man pushed to the edge by society's cruelty. Another could be a story where the Joker forms an unlikely alliance with Batman for a common enemy. And there are also those that explore the Joker's relationship with Harley Quinn in a new and unique way within the fanfiction world.
Well, sometimes in 'the dark knight crossover fanfiction', the concept of alternate timelines is explored. This could mean a version of Batman that has different moral boundaries or a Gotham that has a different power structure. It allows for new interpretations of the characters and their relationships. Like, what if Harvey Dent never became Two - Face in a crossover scenario? It could change the entire story arc.
Some Dark Knight Rises fanfictions might take a different turn and be set in an alternate universe. In this universe, Bane could have been a hero instead of a villain. He might have joined forces with Batman to fight a greater evil that threatened not only Gotham but the whole world. This would completely change the dynamics of the story and the relationships between the characters.