Another possibility is a scenario where Voldemort decides to expand his reach into the non - magical world and Batman becomes aware of this threat. He would then enter Hogwarts undercover to learn about magic and form an alliance with the Order of the Phoenix. The contrast between Batman's brooding, non - magical detective nature and the magical world would make for an interesting story.
A 'Batman the Harry Potter crossover fanfiction' might involve Batman teaming up with Harry Potter. Batman could teach Harry some combat skills from the Muggle world, while Harry could introduce Batman to magic. They could join forces to fight a common enemy, like a dark wizard who is using Muggle technology to enhance his dark magic. It would be a clash of two very different worlds and sets of skills.
One possible plot could be that Batman finds himself in the wizarding world of Harry Potter. He could use his detective skills to solve some magical mysteries that even the wizards are having trouble with, like a series of unexplained disappearances in Hogwarts. Maybe he teams up with Harry Potter and his friends, and Batman teaches them some non - magical self - defense techniques in return for learning about magic from them.
The interaction between the two sets of characters could also be quite comical at times. Imagine Batman trying to ride a broomstick for the first time. He would be all serious and business - like, but it would be a completely new experience for him. And the Hogwarts students would be in awe of Batman's cool gadgets and his Batmobile. Some of the minor characters in the Harry Potter world, like Neville, could gain confidence from seeing Batman's determination. And Batman could learn about the importance of friendship and loyalty from the tight - knit group at Hogwarts.
One possible plot could be that Voldemort's dark magic starts to seep into Gotham City. Batman, being the detective he is, starts to notice strange and magical happenings. Meanwhile, Harry Potter, Ron and Hermione get transported to Gotham through a magical accident. They team up with Batman to stop Voldemort's influence from spreading further. Harry uses his magic skills and Batman uses his gadgets and combat skills to take on the Death Eaters and Gotham's villains who have been corrupted by the dark magic.
The Joker could be an unexpected but exciting addition to this crossover. Imagine the chaos he could cause in the wizarding world. His madness and unpredictability would be a huge challenge for the wizards and witches. And Batman would have to find a way to stop him in a world full of magic, which he is not used to. Also, Snape's complex personality could add more depth to the story when interacting with Batman.
The characters' interaction could be really interesting. Harry Potter is used to dealing with threats using magic, but Batman uses his wits and physical strength. When they first meet, there might be some tension as they don't understand each other's worlds. But as they face a common enemy, they start to work together. Harry could show Batman how to use a broomstick, and Batman could teach Harry some hand - to - hand combat moves. Hermione would probably be trying to find a scientific explanation for Batman's abilities, while Ron is just happy to be part of this crazy adventure.
In a crossover, it could be argued that Harry Potter is the most powerful. His magic can do things that are beyond Batman's physical capabilities. For example, he can apparate, which is a form of teleportation, and he can use spells to immobilize or defeat his enemies. While Batman is a formidable fighter and detective, he doesn't have the ability to counteract magic directly. However, Batman's strategic mind might be able to find ways to work around Harry's magic, but in terms of raw power, Harry has the edge with his magic.
Batman's brooding and serious personality would likely make Harry more cautious. Batman is all about planning and preparation, and Harry would pick up on that. For example, Harry might start to analyze magical situations more thoroughly before acting, instead of just relying on his instincts.