In a fanfiction where Harry Potter is in the DC Universe, there are countless possibilities. He could introduce magic to the DC world on a large scale. Imagine him using the Patronus charm to protect Metropolis from Doomsday. His wand could be a unique weapon in a world full of superpowers. Also, his knowledge of the wizarding world could help in solving some of the DC Universe's mysteries, like ancient spells that could counteract certain super - powered threats.
If Harry Potter goes to the DC Universe in a fanfiction, it could be really interesting. His magical skills would be a new element in the DC world. He might be confused by the different powers and technologies there. For example, his invisibility cloak would be a different kind of 'invisibility' compared to the technology - based ones in DC. He could also learn a lot from the DC heroes about courage and justice, and in turn, teach them about the magic world.
He would probably be seen as a very powerful and unique being. His chakra abilities could be mistaken for some kind of meta - human power. Maybe he'd team up with the Justice League to fight against powerful threats like Darkseid. His skills in combat and his ability to use shadow clones would give the League an edge in battles.
Well, he could team up with Superman. Imagine Ben using his alien forms to help Superman fight Lex Luthor's latest evil plan. His alien powers would add a whole new dimension to the battles in the DC Universe.
Well, Naruto's unique ninja skills would be quite a shock in the DC Universe. His ability to create shadow clones could be used in various ways, like for stealth or for overloading opponents. He might team up with Batman, as Naruto has a strong sense of justice and could learn a lot from Batman's detective skills. And his Rasengan could be a powerful weapon against DC villains.
If Goku were in the DC Universe in a fanfiction, it would be really interesting. He might form an alliance with Superman. They both have a strong sense of justice. But their fighting styles are quite different. Goku's martial arts skills combined with Superman's super - powers could make for an unbeatable team against the likes of Darkseid or other major threats.
He could fit in as a unique hero. His magic could be seen as a special power like the others in DC. For instance, he could use his Patronus charm to fight off fear - inducing villains.
If Harry Potter was in the Marvel Universe, he'd probably end up at Xavier's School for Gifted Youngsters. Think about it, a school full of mutants with special powers, and here comes Harry with his wizardry. He'd either be a great asset or cause a bit of a stir. His magical abilities would be a new kind of power that the X - Men and other mutants might not be used to dealing with.
Well, if Spider - Man were in the DC Universe in a fanfiction, he'd probably have some interesting team - ups. He could swing alongside Batman, sharing their skills in the dark and on the rooftops. Maybe he'd learn some new detective skills from Batman too.
They might have to adapt to the unique rules and powers in the DC Universe. For example, if it's a normal human from our world, they'd be shocked by the existence of superpowers like Superman's flight and strength. They could also get involved in the classic DC storylines, either as a helper or a disruptor.
Well, he might use his magic to fight against the Sith. Maybe he could use the Patronus charm to fend off the dark side's influence. It would be really interesting to see how he'd interact with Jedi and their use of the Force.