Another interesting plot could be a love triangle situation where both Batman and Superman are interested in Wonder Woman, which creates a rift between Batman and Superman in the fanfiction world. This would add a whole new layer of drama to their usual superhero relationships.
A really cool storyline might involve Batman getting trapped in the world of the Amazons. He has to rely on Wonder Woman's help to get back to Gotham. During his time there, he learns about their culture and fighting techniques, which he then incorporates into his crime - fighting in Gotham when he returns.
Well, obviously Batman and Wonder Woman are the main characters. Batman, the dark and brooding detective from Gotham, with his high - tech gadgets and martial arts skills. And Wonder Woman, the Amazonian princess with her super strength, lasso of truth and indomitable will.
One possible storyline could be Raven seeking Batman's help to deal with a dark magical threat in Gotham. Maybe a powerful sorcerer is using the city's shadows and Batman, with his detective skills, teams up with Raven who has her own magical powers. They start off distrusting each other, but as they face challenges, they learn to work together and respect each other's abilities.
One interesting storyline could be the Justice League having to deal with a mind - controlled Batman. Maybe some villain manages to take over Batman's mind, and the League has to figure out how to stop him without harming their friend. It would be full of action as they try to outwit Batman's strategic plans while also trying to break the mind control.
Maybe in a fanfiction, they kiss during a moment of extreme danger. For example, Batman is about to sacrifice himself to save Wonder Woman and she stops him with a passionate kiss. This could be the start of a new relationship dynamic where they start to question their previous boundaries and how they feel about each other.
One interesting storyline could be Batman and Wonder Woman teaming up to take on a new, powerful villain that neither could face alone. This villain could be a magical threat that requires Wonder Woman's knowledge of the mystical and Batman's strategic mind.
One interesting storyline could be the two superheroes uniting to fight a new, powerful villain that threatens both Gotham and Themyscira. Their marriage would symbolize the union of two different worlds, and they'd use their combined skills and resources to protect everything they hold dear.
One interesting storyline could be their child having to hide their powers in a normal school. They'd struggle to fit in while also having the responsibility of their superhero heritage. Another could be the child getting kidnapped by a villain who wants to use their unique genetic makeup for evil.
One interesting storyline could be the son's struggle to balance the very different legacies of his parents. He might have Batman's brooding nature and tactical mind, while also having Wonder Woman's sense of justice and connection to the gods. This internal conflict could lead to some great character development.
A great plot could be a love story between them in the fanfiction world. They come from different backgrounds, she's an Amazonian princess and he's a brooding vigilante from Gotham. Their relationship could be filled with misunderstandings at first but then develop into a deep connection. For example, they might initially clash over their different approaches to justice but later find common ground and fall in love.
A really interesting plot could be that the child is kidnapped by an old enemy of either Wonder Woman or Batman. The kidnapper wants to use the child to get revenge on the heroes. The child then has to use their wits and the powers they've inherited to escape. Along the way, they might make new friends or discover secrets about their parents' pasts that help them in their journey.