What are some interesting ideas for DC Universe crossover fanfiction?

A possible story could be Korra getting involved in a conflict between the different factions in the DC Universe, like the Amazons and Atlantis. Her ability to understand different cultures and her diplomatic skills, which she developed in her own world, could be used to ease the tensions between them. She could also use her earth bending to help repair the damages in Atlantis caused by a recent battle, and in return, the Atlanteans could offer her some knowledge about their advanced technology which could be useful for her in future battles in her own world.

A cool dc marvel crossover fanfiction might involve Batman and Iron Man. Picture Batman being intrigued by Iron Man's high - tech gadgets and the two of them collaborating to create an even more advanced piece of technology to defeat a new breed of super - criminals that are using alien and advanced Earth - based tech.

One idea could be that the Hulk somehow gets transported to the DC universe. Maybe due to a freak accident involving some sort of interdimensional portal created by Lex Luthor in an attempt to bring in a powerful being to defeat Superman. The Hulk then starts rampaging through Metropolis, and Superman has to figure out how to stop him without causing too much destruction himself. He tries to reason with the Hulk at first, but when that doesn't work, he has to use his strength and speed to keep the Hulk occupied until they can find a way to send him back to his own universe.

One idea could be a plot where the Avengers and DC heroes are brought together by a powerful cosmic entity that threatens both universes. They have to combine their powers and strategies to defeat it. For example, Superman and Thor could work together to take on the entity's brute strength while Batman and Iron Man figure out its weaknesses using their intellect.

One idea could be a story where Superman and Captain America team up. They could face a common threat that requires both of their leadership skills and unique powers. For example, a powerful alien force is attacking both the DC and Marvel universes simultaneously. Superman's super strength and flight, combined with Captain America's combat strategy and indomitable will, would make for an exciting duo.

One idea could be Vegeta arriving in the DC universe during a major crisis. He might initially be seen as a threat but then teams up with Superman. Their powers are quite different, with Vegeta's energy blasts and combat skills from Saiyan training, and Superman's super strength and flight. Another idea is Vegeta getting involved in the Gotham underworld, facing off against villains like the Joker. He could use his no - nonsense attitude to deal with the chaos there.

Well, in an 'ichigo and dc crossover fanfiction', perhaps Ichigo's Hollow powers could be mistaken for some kind of new meta - human ability in the DC universe. The Justice League might initially view him as a threat and try to contain him. But then, when they realize he's there to fight a greater evil, like Darkseid who has somehow tapped into the spiritual energy of Ichigo's world, they join forces. Ichigo could also share his knowledge of the afterlife with characters like Constantine, which could lead to some really interesting storylines.

Maybe a plot where Batman and Iron Man compete in a technological battle at first. But then they realize there's a greater enemy. They start to combine their tech - Batman's detective skills and Iron Man's advanced weaponry. For example, Batman could use Iron Man's nanotechnology to upgrade his suit while Iron Man could learn from Batman's stealth technology.

One idea could be Master Chief getting transported to the DC universe and teaming up with Batman. They could combine their combat skills and strategic thinking to take on a common enemy like Darkseid.

One idea could be that Spider - Man gets transported to the DC universe through some sort of interdimensional rift. He teams up with Batman to stop a new villain who has the powers of both Green Goblin and the Joker. Their combined detective skills and combat abilities would make for an exciting story.