Naruto would probably become more disciplined. Karate requires a lot of self - control, and Naruto, who is often impulsive, would have to learn to rein in his emotions. He might also be more patient, as teaching karate to others would need him to be calm and understanding. His sense of justice would remain strong, but he would enforce it in a more karate - like way, perhaps with more honor and respect for his opponents.
As a karate master, Naruto's personality would gain an added layer of seriousness. While he still has his fun - loving side, when it comes to karate, he would be all business. He would be more focused on perfecting his own skills and those of his students. His competitive nature would shift from just winning at any cost to winning with grace and respect. He would also become more of a role model, with his students looking up to him not just for his power but for his karate - inspired values like perseverance and respect for others.
His confidence would soar even more. Naruto already has a healthy dose of self - confidence, but as a karate master, he would have a newfound pride in his skills. He would be more assertive in a positive way, not just charging into battles but approaching them with a karate - based strategy. His ability to inspire others would also be enhanced. He would use his own journey in karate to motivate his students, sharing stories of how he overcame challenges in learning the art. And his friendly nature would still be there, just with a more karate - influenced sense of camaraderie among his fellow martial artists.
If Naruto becomes involved with Slenderman in a fanfiction, his usually cheerful and determined personality might become darker. He could be more withdrawn as he grapples with the strange and often terrifying aspects of Slenderman's world.
His personality might become more refined. Instead of being the rowdy Naruto we know, he could be more composed and polite due to the influence of the daimyo's court.
He might become more serene. Since Sadaiam might have a calmer and more nature - centered philosophy, Naruto could adopt some of that. He'd be less impulsive in his actions and more contemplative.
Naruto might become more aggressive at first. The influence of Venom could bring out his darker side. But as he gets used to it, he would learn to balance it with his usual positive and determined self.
Naruto might become more calm and collected. Goku has a certain simplicity and focus in his personality. Naruto could pick up on that and not be as impulsive as he usually is.
Naruto might become more reserved. Growing up under Zeltrech, he could be exposed to a more sophisticated and perhaps less rowdy environment compared to Konoha. So instead of his usual loud and brash self, he could develop a more calm and calculated side.
His personality could also become more calculating. Since the Sannin were known for their strategic thinking, Naruto would start to think several steps ahead. He might be more secretive about his plans too. He would no longer be the open - book Naruto. Instead, he would be like Jiraiya, who had his own secrets and plans. He would also show more patience, which is something he lacked before but the Sannin had in abundance when dealing with complex situations.
Well, first of all, Naruto's usually carefree and positive personality could be tempered with Ace's more complex emotional side. Ace had a lot of baggage related to his family and his identity as a pirate. So Naruto might start to have some internal struggles about his place in the world. He could become more reserved in some ways, like not being as quick to share his feelings. At the same time, his loyalty would become even more intense. He would be willing to go to greater lengths for his friends and the village, almost to the point of self - sacrifice, which was a big part of Ace's character. And his view of power might change too. Instead of just seeing it as a means to protect and be recognized, he could see it as a way to uphold a certain code, like Ace's code among the pirates.
Naruto's normally bright and positive personality might become more conflicted. Since Douma has a more complex and often morally ambiguous nature, Naruto would have to grapple with new emotions. He might become more reserved as he tries to figure out how to handle Douma's powers without losing his own identity.
His personality would change in several ways. For one, he'd have to be more cautious. Obito was involved in a lot of secretive and dangerous operations. Naruto would have to adapt to this new level of secrecy. Also, he might become more brooding as he tries to understand Obito's darker motives in the original story. But ultimately, his strong belief in friendship and his never - give - up attitude would still be there, and he'd use them to make different choices than Obito did.