Well, in 'naruto in marvel fanfiction', a cool crossover idea is Naruto meeting the X - Men. Naruto's ability to understand and empathize with those who are different, like mutants, could lead to some great storylines. His chakra control might also be something that the X - Men could learn from or be intrigued by. Maybe he could help them in a battle against a common enemy using his Rasengan or other powerful jutsus.
One interesting crossover could be Naruto characters having to face off against Thanos. Imagine Naruto's Rasengan against Thanos' Infinity Gauntlet power. It would be an epic battle of different power systems.
One interesting crossover could be Naruto teaching Ms Marvel some of his ninja skills, like tree - walking. Since Ms Marvel has super strength and agility, she might pick up these skills quickly. This could lead to a new adventure where they face a common enemy together.
A cool aspect in Naruto and Marvel/DC fanfiction is the power combination. In Marvel, Naruto could team up with the X - Men. His chakra control might help mutants with their powers. In DC, he could meet the Green Lanterns. The idea of Naruto using his chakra to enhance the power of the Lantern ring is fascinating. Also, the concept of the Sharingan in Naruto and how it could be used to analyze the powers of Marvel or DC characters.
Well, a great crossover idea in naruto and marvel fanfic is the Avengers team coming to the Naruto world. Imagine Iron Man trying to figure out the chakra system while Captain America is learning ninja techniques. This would bring a whole new dynamic to both universes as they interact and learn from each other.
One interesting crossover could be Naruto using his Rasengan in a fight against Wolverine's claws. The clash of Naruto's chakra - powered move and Wolverine's adamantium would be epic.
A great marvel crossovers fanfiction idea is to cross over the Guardians of the Galaxy with the Fantastic Four. The Guardians' intergalactic adventures meeting the scientific minds of the Fantastic Four would be full of potential. You could have Rocket Raccoon and Mister Fantastic sharing their tech knowledge, or Groot and The Thing having a friendly brawl. It would be a fun mix of different universes within the Marvel world.
One interesting crossover could be Naruto's Rasengan combined with a Marvel power like Iron Man's repulsor technology. Imagine Naruto creating a Rasengan with an energy core similar to Iron Man's power source. Another could be Naruto using his shadow clone jutsu in battles alongside the X - Men. The clones could confuse the enemies while the X - Men use their mutant powers. Also, Naruto's sage mode could interact with Doctor Strange's magic. Sage mode gives Naruto an enhanced perception which could be used to detect and counteract some of Strange's spells.
One interesting crossover could be Percy Jackson teaming up with Spider - Man. Percy's water - based powers and Spider - Man's agility would make for some great action scenes. For example, they could be fighting a villain who has the ability to control fire. Percy could use his water powers to douse the flames while Spider - Man swings in to web up the bad guy.
One Punch Man's heroes in the Marvel universe could also be a cool concept. For instance, Mumen Rider's sense of justice in a world full of super - powered beings like in Marvel. His simple yet strong - willed nature could inspire some of the street - level heroes in Marvel. And then there's Tatsumaki, her psychic powers could put her in some interesting situations with the likes of Doctor Strange, as they both deal with powerful and otherworldly forces.
One interesting aspect in Percy Jackson and Marvel crossovers in fanfiction is the power dynamics. Percy, with his water - based powers, could have some really cool interactions with, say, Iceman from Marvel. Their powers are related to the elements but in different ways. Another idea could be Percy teaming up with the Avengers. He could use his demigod skills like sword - fighting and his ability to understand ancient languages to help them out in various quests. Maybe he could help translate some Asgardian runes or something.