Naruto could become more calculating. In the world of nobles, there are often political games. He would need to think more carefully about his actions and their consequences. For instance, he can't just rush into a fight like he used to. He has to consider how it will affect his family's reputation and standing among the other nobles. Also, he might be more secretive about his true intentions as he has to protect his family's interests.
Naruto's character may change in the sense that he becomes more aware of the class differences. As a world noble, he is now on the other side of the social divide. This could make him more empathetic towards the lower classes in a different way. He might use his newfound status to try and bridge the gap between the nobles and the common people. He would still retain his core values of friendship and loyalty, but they would be expressed in different ways, like being loyal to his noble family while also trying to do good for the whole village or even the entire Naruto world.
Naruto's character might become more brooding and mysterious, like the Undertaker. He would lose some of his usual exuberance and become more focused on intimidation. Instead of his loud and energetic self, he would be quieter, with a more menacing presence.
Naruto could also become more powerful but in a different way. His chakra might be tainted with a touch of the demonic, giving him new abilities that are both a blessing and a curse. He has to learn to control these new powers, which might make him seem more withdrawn as he trains in isolation to avoid hurting others accidentally.
Naruto would probably have a more complex view of power. In the original, he was all about becoming stronger to protect his friends. But as a Darkseid clone, he might question the nature of power. Darkseid uses power for domination, and Naruto would have to struggle not to be influenced by that aspect while still using his new - found powers for good.
Naruto would likely become more stealthy. Itachi is known for his stealth and if he trains Naruto, Naruto would pick up some of those skills. He might start to rely less on his brash and straightforward fighting style and incorporate more subtlety.
Naruto's character would change a great deal. Since Acnologia is a powerful and somewhat menacing figure, Naruto would probably be more aggressive. He might not value the same things as the original Naruto, like the bonds of friendship within the village. Instead, he could be more focused on his own strength and survival. He might also be more distrustful of others, having grown up under the tutelage of someone like Acnologia.
Naruto would likely become more solemn. The environment of hell is not a happy - go - lucky place like Konoha. He would have to be more strict and less naive. His usual exuberance might be toned down as he deals with the weight of ruling hell.
Naruto might become more conflicted. Since Madara had some extreme views, Naruto would have to grapple with those ideas. He could become more secretive as he tries to understand Madara's motives better without alarming his friends. For instance, he might start training alone more often to study Madara - inspired techniques.
He would probably be more powerful in different ways. Hiruko might teach him unique and dangerous techniques that change his fighting style. Also, his personality would be shaped by Hiruko's teachings. Maybe he'd be more calculating and less impulsive. Instead of charging into battles head - first, he'd think more strategically like Hiruko. His sense of justice might also be warped. What he considers right and wrong could be different from the original Naruto who was influenced by the values of the Hidden Leaf.
Naruto would become more brooding. His usual sunny disposition would be tempered by the knowledge of his vampire side. He'd be more cautious about his relationships, fearing he might accidentally harm his friends. For example, he might be hesitant to get too close physically during hugs or high - fives in case his vampire strength gets out of control.
He would likely become more confident. With the power of a dragon, he'd have a new source of strength. He might be less hesitant in battles.