One interesting crossover could be Naruto characters trying to catch Pokemon. For example, Naruto might see a Pikachu and think it's some kind of strange new summon. He'd probably try to befriend it in his own energetic way. Another could be the Pokemon trainers coming to the Naruto world and being amazed by the ninja abilities. They might try to learn some ninja techniques, like how to walk on water or climb trees easily.
A cool crossover would be a battle between a powerful Pokemon like Charizard and a strong Naruto character like Sasuke. Imagine Sasuke using his Sharingan to try and anticipate Charizard's moves, while Charizard blasts fire at Sasuke. Also, in a fanfic, the Pokemon could learn ninja skills. Maybe a Jigglypuff could learn how to create clones like Naruto does, and use that to put on an even more confusing performance.
A great crossover could involve a battle between the magic of MLP and the power of Pokemon. Imagine Twilight Sparkle using her magic against a powerful Pokemon like Charizard. Or perhaps the Mane 6 team up with a group of Pokemon trainers to fight a common enemy. They could combine their strengths, like Rarity using her fashion skills to create cool outfits for the Pokemon trainers while they battle. It would be a really unique and exciting story.
One interesting crossover could be Ash and his Pokemon traveling to the Naruto universe and having to deal with the ninja world's challenges. Maybe Pikachu uses its electric attacks against ninja techniques.
One interesting crossover could be the characters from Naruto using Pokemon moves in a battle. For example, Naruto could use Pikachu's Thunderbolt move in his own unique way. Another could be the Pokemon existing in the Naruto world and being used by shinobi for various missions. They might be used for scouting, like a Pidgeot flying over enemy territory, or for combat support, such as a Charizard breathing fire to fend off attackers.
In some fanfictions, they might explore how Ash's bond with his Pokémon is similar to Naruto's bond with his friends in the Hidden Leaf Village. Ash's journey to become a Pokémon master and Naruto's journey to become Hokage both involve growth, friendship, and facing challenges. They could learn from each other's experiences. For instance, Naruto could teach Ash some of his ninja stealth techniques which could be useful when catching Pokémon in the wild.
One interesting crossover could be Naruto having to team up with a Legendary Pokemon like Mewtwo. Imagine Naruto's speed and combat skills combined with Mewtwo's psychic powers. They could face off against powerful villains from both the Naruto and Pokemon universes. Another could be a story where Naruto discovers a Legendary Pokemon egg and has to protect it while on a mission.
One interesting crossover could be the combination of Naruto's ninjutsu with Pokemon's unique abilities. For example, a character might use a Fire - type Pokemon's power to enhance a Fire - style ninjutsu. Another could be the idea of Pokemon existing in the Naruto world and being used in battles alongside ninjas. Maybe a Pikachu could befriend Naruto and use its electric attacks to help him in combat against enemies like the Akatsuki.
In this type of fanfiction, there might be a crossover where a Pokemon character somehow enters the Naruto universe. For instance, Pikachu could end up in the Hidden Leaf Village. When the Nine - Tails senses Pikachu's electric energy, it could be intrigued. This could lead to an adventure where Naruto and Pikachu have to work together. Maybe Pikachu helps Naruto control the Nine - Tails' power better using its own unique skills, like how it can store and release electricity.
In a fanfic, their different origins could play a big part. Naruto, an orphan ostracized by his village at first, and Superman, an alien orphan. They could bond over their shared feelings of being alone at the start. Superman could teach Naruto about his Kryptonian heritage and how to embrace it, while Naruto could show Superman how he overcame the hatred in his village and turned it into love and loyalty.
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 the combination of Naruto's ninja skills with Bayonetta's witch powers. For example, Naruto could use his shadow clones in a fight while Bayonetta uses her summoned demons. They might team up to face a powerful enemy that threatens both their worlds. Maybe a villain from the Naruto universe that has some connection to the forces of evil in Bayonetta's world.