Naruto's sense of justice could become more complex. In the original series, his idea of right and wrong is fairly straightforward. But as the son of Dracula, he might see that the vampire world has its own rules and moral code. He could struggle to reconcile this with the ninja way. For example, vampires might see feeding on humans as a necessary part of survival, which would go against Naruto's ninja values of protecting people. So, he'd have to find a middle ground.
He would likely be more brooding. Naruto is usually a very upbeat character, but if he was the son of Dracula, he'd have to deal with the dark side of his nature. He might be more withdrawn, especially if he was worried about hurting others with his vampire powers.
Naruto's character would likely change in terms of his morality. While he has always been a hero, as Dracula's reincarnation, he may face moral dilemmas related to the vampiric need for blood. He would have to find a way to balance this new aspect of himself without losing his core values. For instance, he might initially be horrified at the thought of harming others to get blood but then figure out a way to get blood without causing harm, like using donated blood or something similar.
He might have paler skin, like a typical vampire. His eyes could change color, maybe to a deep red. And his teeth could be a bit sharper, especially when he gets angry or hungry for blood.
Naruto would likely be more conflicted. His usually bright and positive personality might be tempered by the knowledge of his dark heritage. He might become more cautious in using his power, knowing the destruction Thanos was capable of. He could also be more isolated as other characters might fear his potential for evil.
Naruto's sense of humor would definitely change. He would likely have a much darker and more sarcastic sense of humor, like Deadpool. His confidence might also skyrocket in a different way. Instead of just believing in himself as a ninja, he'd believe in his ability to break all the rules like Deadpool does. He might also be more open to using unethical means to achieve his goals, which would be a big shift from his normal self.
Naruto would probably be more cerebral. Since Robin is known for her intelligence and love for knowledge, Naruto might spend more time studying and analyzing situations rather than just jumping into action. He could be more strategic in his battles, thinking several steps ahead like Robin often does.
He might become more confident, bordering on over - confident like Gilgamesh. Naruto is already confident, but with Gilgamesh as his father, he could have an even greater sense of self - importance.
He'd probably become more brooding. Growing up with Dracula would expose him to a darker side of magic and life. He might not be as quick to trust others as he was before. His sense of humor might also change, becoming a bit more sarcastic and dry, like the typical Dracula - like characters.
He'd be more brooding. Growing up with Dracula, he'd be exposed to a lot of dark and serious stuff, so he'd lose some of that innocent charm he has in the original series.
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.
He might become more devious. Instead of his straightforward, head - on approach, he could start using more underhanded tactics, like Loki. For example, he may set up elaborate traps for his enemies rather than just fighting them directly.