One idea could be a crossover with the Teenage Mutant Ninja Turtles. Batman could team up with the turtles to take on a common enemy like the Shredder and the Joker working together. They could combine their unique fighting styles and gadgets to outwit the villains.
One interesting crossover idea could be Naruto visiting Gotham City. He'd be shocked by the dark and gritty environment compared to his own village. His ninja skills could help Batman in fighting villains in unexpected ways, like using his shadow clones to create distractions during a heist. Another idea is Batman somehow ending up in the Naruto world and learning about chakra. He could use his detective skills to figure out how to use it in his own unique way.
One great fanfiction could be about Catwoman's origin story within the animated series' universe. Maybe she starts as a small - time thief in Gotham's slums and gradually rises to become the iconic cat burglar we know. She could have a complex relationship with Batman that is explored more deeply, like her internal struggle between her feelings for him and her life of crime.
A believable plot also depends on the setting. If Batman crosses over with the X - Men, consider how Gotham's dark and gritty environment will interact with the X - Men's more science - fiction - based world at Xavier's School for Gifted Youngsters. The plot could involve a mutant who has escaped to Gotham and is causing chaos. Batman tries to handle it on his own at first but realizes he needs the X - Men's expertise in dealing with mutants. This kind of plot builds on the unique aspects of each universe and creates a situation where the crossover feels natural and the characters' actions are believable.
One idea could be a fanfiction where Poison Ivy teams up with another villain, like the Joker. They could have a really strange alliance. Maybe she uses her plant powers to help him with one of his crazy schemes, but in the end, she double - crosses him because she realizes his plans are too chaotic even for her. It would be an interesting exploration of her character and how she interacts with other villains in the Batman universe.
One interesting concept could be exploring Batman's early days as a vigilante in fanfiction. Writers might show his struggles with learning to fight crime effectively while also dealing with his own inner demons.
Most of them are. They are based on the animated series which is generally family - friendly. However, some might have a bit of darker themes as Batman often deals with villains, but overall, they can be enjoyed by kids who are fans of the character.
One common theme is Scarecrow's fear toxins and how they affect different characters in the Batman universe. For example, seeing how Batman overcomes his worst fears induced by the toxin.
An interesting idea is to write a story where Catwoman discovers a secret about Batman's past that even he doesn't know. This could lead to a strange alliance between them as they both try to figure out what the discovery means. It would also add a new layer to their relationship.
One idea could be creating an original character (OC) who is a new villain in Gotham. This OC could have a unique power, like the ability to control technology. They would target Batman's high - tech gadgets and try to disrupt his crime - fighting efforts.