One idea could be that a powerful new villain emerges who has the ability to manipulate both Batman and Superman's minds. This forces them to fight against each other while the real enemy is pulling the strings. Another could be a situation where Gotham and Metropolis are in a territorial dispute, and Batman and Superman initially take sides based on their cities, but then realize they've been played.
Wonder Woman would be an excellent addition. She has the strength and wisdom to deal with both Batman and Superman. She could be the voice of reason, trying to get them to stop fighting. Also, her own backstory and powers could be intertwined with the plot. For example, she might have some ancient knowledge about a threat that requires Batman and Superman to work together, and she has to convince them of this while also dealing with their egos and differences.
The batman v superman story is complex. Batman, who has been operating in Gotham, becomes concerned about Superman's unchecked power. Superman, on the other hand, is just trying to do what he thinks is right for the world. Lex Luthor manipulates events to make Batman target Superman. However, as the story progresses, they realize they need to work together against a common enemy like Doomsday.
There could be a fanfiction where Batman and Superman are transported to an alternate dimension. In this new world, they find that their roles are reversed. Superman is more of a brooding, nocturnal figure, while Batman has super - like abilities. The story would be about how they adapt to this new situation and still find a way to be heroes in this strange world.
Superman can also be a great character in fanfiction. Writers can focus on his internal struggle between his human upbringing and his god - like powers. In the context of batman v superman fanfiction, his confusion about being seen as a threat and how he tries to prove his good intentions can make for a very engaging character.
In the 'batman v superman graphic novel', the story mainly focuses on the conflict between Batman and Superman. Batman sees Superman as a potential threat to humanity due to his great power. Superman, on the other hand, is just trying to do good but is often misunderstood. There are also other elements like Lex Luthor's schemes to fuel their enmity and Wonder Woman's appearance which adds more depth to the overall narrative.
The main characters are Batman, Superman and Lex Luthor. Batman is the Dark Knight from Gotham. Superman is the Man of Steel. Lex Luthor is the villain who causes a lot of the problems between them.
One common theme is the contrast between their powers and personalities. Superman is all - powerful and has a more optimistic view, while Batman is a normal human with great skills and a darker, more brooding nature. Their interactions based on these differences are often explored.