If Naruto had Gaara's personality, the story would be very different. Naruto is usually outgoing and boisterous, while Gaara is more reserved and initially cold. With Gaara's personality, Naruto might not be as quick to make friends. He'd be more guarded and less likely to trust others easily. This could change his relationships with characters like Sasuke and Sakura. His interactions with the villagers would also be different. Instead of trying to gain their approval through big shows of strength and determination, he might keep more to himself, which could slow down his journey to becoming Hokage.
Well, in this fanfiction scenario, Naruto having Gaara's personality would mean a much darker and more introverted Naruto. Gaara's personality was shaped by his lonely and traumatic childhood. So Naruto might not have that same drive to prove himself to everyone. He could be more focused on self - preservation rather than protecting the village at all costs. His bond with Jiraiya might also be affected as he might not be as receptive to Jiraiya's teachings. And in battles, instead of using his usual enthusiastic and sometimes reckless fighting style, he'd be more calculating and cold - blooded like Gaara.
His relationships would change a great deal. For example, with Sasuke, Naruto might not be as persistent in bringing him back. Gaara - like Naruto would be more likely to let Sasuke go his own way as he wouldn't be as emotionally attached in that warm, Naruto - way. With Sakura, he'd be less likely to tease her or be as protective. He'd be more distant and less involved in her problems. And with his other friends like Shikamaru and Choji, he might not engage in their usual banter. Instead, he'd be more of a loner among them, only interacting when necessary.
Well, with Minato's personality, Naruto would probably be more reserved in showing his emotions. He wouldn't be as boisterous or loud as he usually is. This could change his relationships too. For example, his interactions with Sasuke might be less about yelling out his feelings and more about subtly trying to understand and help him. Also, his leadership style could be more like Minato's, inspiring trust in his comrades through his composed and intelligent demeanor.
Naruto might become more withdrawn like Gaara was initially. Gaara was isolated due to his power and the fear others had of him. So Naruto could start to keep to himself more, losing some of his boisterous and friendly nature.
If Gaara got the Rinnegan in a fanfiction, his personality could change in several ways. He might become more introspective as he tries to understand the nature of this new power. Since the Rinnegan is associated with great power and knowledge, he could start to question his place in the ninja world more deeply. At the same time, he may become more isolated as he tries to master the powers of the Rinnegan, fearing that he could accidentally harm those around him with his new - found abilities. However, his core of kindness and protectiveness towards his village and friends would likely remain, but it might be tempered by his new power - related concerns.
Naruto would probably still be his enthusiastic and determined self, but with a new sense of responsibility as a Wizard Saint. He might be a bit more cautious in using his powers since they are now magical and could have greater consequences. Gaara, on the other hand, might become more open. The new role of Wizard Saint could give him more confidence and he could start to interact more with others in a positive way, rather than just being aloof.
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.