Who could be the main characters in a 'Harry Potter Justice League crossover fanfiction'?

Voldemort could be a main villain. Imagine him getting his hands on some of the Justice League's technology and using it to enhance his dark magic. He could become even more powerful and pose a threat not just to the wizarding world but also to the world the Justice League protects.

It could be a combined force of Voldemort and one of the major Justice League villains like Darkseid. Voldemort might be attracted to Darkseid's power and they form an alliance. Their goal could be to take over both the wizarding world and the world where the Justice League exists. They would use their combined magic and super - villain powers to create chaos and destruction.

The Highbreed could also serve as the main villain. They are a powerful and xenophobic race in the Ben 10 universe. In a crossover, they might view the Justice League's world as a place to expand their territory. They could use their advanced technology and large numbers to attack. Ben would have to convince the Justice League that the Highbreed are a serious threat and together they would need to find a way to stop the Highbreed's invasion, perhaps by using Ben's alien forms like Upgrade to hack into their technology and the Justice League's strategic planning.

Obviously, the Flash is one of the main characters. He brings his super - speed and unique personality to the story. And then, of course, members of the Justice League like Superman, Batman, Wonder Woman, etc. Superman with his super strength, Batman with his intelligence and gadgets, and Wonder Woman with her combat skills and Amazonian heritage are all likely to play important roles.

One idea could be that Voldemort discovers a way to enter the DC universe and teams up with some of the Justice League's villains like Lex Luthor. The Hogwarts students and the remaining members of the Justice League have to join forces to stop them. The wizards can use their magic while the superheroes use their powers.

Hermione Granger and Batman would be great to focus on. Hermione is extremely intelligent and well - read in the magical lore. Batman is a brilliant detective with a vast knowledge of various sciences and combat skills. Their interaction could be really engaging. Hermione could introduce Batman to the world of magic, and Batman could show Hermione how to use her intelligence in a more practical, non - magical way in different situations. Also, Wonder Woman and Ginny Weasley could be an interesting pair. Wonder Woman with her Amazonian strength and Ginny with her powerful magic could team up and have some great adventures together, sharing their different perspectives on heroism.

A good main villain could be Brother Eye. It's a powerful and menacing artificial intelligence. In a crossover, it could have evolved in the future to be even more dangerous. It could pose a threat to both the future world of Batman Beyond and the past era of the Justice League, forcing them to team up to take it down.

In a 'Harry Potter Justice League crossover fanfiction', there would be a lot of interesting interactions. The wizards from Hogwarts and the superheroes of the Justice League would have to figure out how to work together. For example, Batman would be intrigued by the magic of Hogwarts and might try to analyze it scientifically. At the same time, Hermione could learn a thing or two from Batman's detective skills. And when it comes to facing a common enemy, like an alien sorcerer, they would combine their powers. The Flash could use his speed to quickly deliver magical items that the wizards need in battle, while the wizards use spells to protect the Flash from magical attacks.

Obviously, Harry Potter and Merida would be the main characters. Harry with his knowledge of the wizarding world and his courage, and Merida with her strong - willed and adventurous spirit. They could team up to face challenges that require both magical and non - magical skills.

Obviously, Harry Potter could be one of the main characters. He could be the one to bridge the gap between the two worlds, using his courage and magic skills. Master Chief from Halo is also a great candidate. His combat experience and leadership would be valuable in the wizarding world full of new threats. Hermione would also be important as her intelligence could help in understanding the Halo technology.