His strength could increase exponentially. He might be able to lift boulders with ease or break through the toughest defenses. His speed could be so great that he becomes a blur to his enemies. Also, his reflexes would be lightning - fast, allowing him to dodge attacks more effectively.
His abilities would become more lethal. Instead of using his Rasengan to just defeat opponents, he might use it to kill. His speed and stealth would be enhanced for more effective assassinations. His ability to gather information, like he did as a ninja, would be used in a more sinister way to track down his targets.
His relationships would change a great deal. With Hermione, he might become more of an equal in terms of physical capabilities. They could go on more dangerous adventures together without her constantly worrying about his safety. Ron might feel a bit left out at first, but then they'd all adapt. His enemies would be more afraid of him, and his friends would look at him in a new light, perhaps with a bit of awe and also some concern as his new abilities might make him a bit of a loose cannon.
His ninjutsu might be enhanced. For example, his Rasengan could gain new properties due to the influence of Campione powers. His speed and strength, which were already considerable in the Naruto world, could be further increased. Maybe his ability to sense danger, which was related to his ninja training, could be upgraded to a more supernatural level in the Campione world.
His combat abilities would change a lot. Naruto's ninjutsu like the substitution jutsu could be used in new and interesting ways in Issei's world. His ability to sense chakra might be transformed into something that can detect the different types of energy in Issei's universe, such as the demonic energy or the holy energy.
Naruto is known for his bright and positive personality. But if he becomes Davy Jones, he might become more brooding. Davy Jones was a complex and often melancholic character. Naruto's usual cheerfulness could be replaced with a sense of solemnity as he grapples with his new identity and the powers that come with it.
His personality could become more irreverent. Naruto is typically respectful of his elders and the ninja hierarchy, but Deadpool's influence might make him question and joke about those things more.
When Naruto gains the abilities of Kratos in fanfiction, his story would transform in multiple ways. Firstly, in terms of combat, he would be able to handle battles in a completely new way. His fights would be more brutal and efficient. In the plot, he could take on larger - scale threats much earlier. For instance, if Akatsuki were to target him earlier, he could fend them off more easily. His character development would also shift. He might become more self - reliant as Kratos' abilities are very individual - centric. However, he would still have his Naruto - like spirit, so he would try to use these powers for the sake of his friends and the village. This would create a new dynamic in his relationships with characters like Sasuke, as he would be in a much stronger position both power - wise and in terms of his self - confidence.
His character would likely become more hardened. The military life is tough and Percy would have to face a lot of difficult situations. He might become less trusting at first as he'd be in a new environment full of strangers. But over time, he could learn to rely on his new comrades. Also, his sense of responsibility would expand from just protecting his friends and family to protecting his entire unit and his country in the context of the fanfiction.
Naruto's relationship with his teachers could also change. They would be proud of his growth in intelligence. But at the same time, Naruto might start to question some of their teachings and suggest new ways of doing things. With his peers, he could be a great source of knowledge and advice, which could strengthen some friendships while causing some envy in others. Overall, his relationships would be in a state of flux as he adapts to his new intellectual abilities.
His positive and determined personality would turn into a cynical and cruel one. He might lose his sense of justice and become self - centered.