Naruto could use his chakra control to enhance his Kryptonian super speed. For instance, he could focus chakra on his legs while using his Kryptonian speed to move even faster and more stealthily. Also, his shadow clone jutsu could be combined with his Kryptonian powers. He could send clones with super strength or heat vision to attack enemies from different directions.
Well, if Naruto had Kryptonian powers in a fanfiction, he would be extremely overpowered. His physical strength would increase exponentially. He could probably lift entire mountains with ease, just like Superman. His speed would also be incredible, allowing him to move faster than the eye can see. And his heat vision? It could be a new and dangerous jutsu in the Naruto universe.
Well, first of all, the Saiyan's power - up transformations could affect the Kryptonian powers. For example, when the hybrid transforms into a Super Saiyan, its Kryptonian powers like super strength and flight could become more intense. The Naruto side's chakra manipulation could also play a role. The hybrid could use chakra to control the flow of its Saiyan and Kryptonian powers. It could potentially use chakra to store excess energy from its Saiyan or Kryptonian side for later use. Also, the Saiyan's tail, which is a unique part of their biology, could be used in combination with Naruto's acrobatic fighting style and Kryptonian's grace in flight. The hybrid could use the tail for balance while performing high - speed maneuvers in the air.
In a fanfiction where Harry Potter has Kryptonian powers, he would be an even greater hero. First of all, his physical strength would be off the charts. He could lift huge objects, like the Hogwarts castle if he wanted to. His X - ray vision would allow him to see through hidden passages and secrets in Hogwarts that no one else could. His super hearing would make it impossible for anyone to sneak up on him. He would also be almost indestructible, which means he could take on the most powerful dark wizards without much fear of getting hurt. This would make him a legend not just in the wizarding world, but in the entire fictional universe.
If Naruto had Kryptonian powers, his strength would be off the charts. He could do things like punch through solid rock without breaking a sweat. His durability would also be enhanced, so attacks that would normally harm him would have little to no effect.
He would become more confident. With Kryptonian powers, he'd have a lot more abilities at his disposal, so he would be less afraid of facing challenges. For example, he wouldn't be as worried about facing Voldemort.
It could be the main protagonist if the story is written in a way that the character manages to control and utilize all the Akatsuki powers effectively. With the combined powers, they would have a vast array of abilities at their disposal, making them extremely formidable.
Well, it could be that there's a plot device like an ancient artifact. This artifact might have the power to draw out and combine the Akatsuki powers. The Akatsuki members themselves might be tricked into contributing their powers to this artifact, and then the protagonist or an antagonist gets hold of it and gains all those combined powers. It's a common trope in fanfiction to use such magical or mysterious items to bring about extraordinary power combinations.
If Karin had Kryptonian abilities, her confidence would likely soar. She could become more assertive in her actions. For instance, with super strength, she would no longer be as afraid in combat situations. Her character might also become more isolated at first as she tries to figure out her new powers on her own, not wanting to endanger her friends. But as she masters them, she would be more open to sharing and using them for the good of the group.