Naruto's usually sunny and optimistic personality might become a bit more brooding. Since he's in Obito's body, he might be influenced by the memories of Obito's tragic past. However, he would still try to hold on to his core values of friendship and never giving up.
He would probably be more conflicted. On one hand, he has his own Naruto - like cheerfulness and determination. But on the other hand, Obito's body comes with a lot of baggage. He might find himself being more secretive as he tries to figure out how to handle Obito's past relationships. For instance, when dealing with the Akatsuki members who knew Obito, he would have to be careful not to expose his true self. His personality would be a mix of his own bright self and the shadows of Obito's past, constantly trying to balance the two.
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.
He might become more instinctive. Naruto is usually impulsive, but as a fox, his impulsive nature could be even more pronounced. He'd be more in tune with basic survival instincts like fighting or fleeing. Also, his loyalty might shift a bit. Instead of being loyal to the village in the same way, he could be more loyal to his new 'fox family' in the sense of the natural world around him.
Naruto's personality in Frieza's body in fanfiction would be a complex mix. On one hand, he'd have to deal with the expectations that come with Frieza's body. He might have to act more cold - blooded at times to fit in or deceive his enemies. But deep down, he'd still be the Naruto who believes in second chances and the power of friendship. So, he might struggle to balance the two sides, his own warm - hearted self and the cold exterior that Frieza's body demands.
Naruto might be more brooding and less of the cheerful optimist. Obito's own experiences of loss and his somewhat dark view of the world could rub off on Naruto. He'd be more cautious and less likely to trust people immediately.
If Naruto was raised by Obito, his relationships would take a radical turn. With the villagers, he would be seen as an outsider or even a threat, just like Obito was in a way. His relationship with Sakura would be different too. Without the common experiences in the village, he might not have the same friendly - rival kind of relationship with her. And his relationship with the Akatsuki members could be very different. He might be more inclined to understand their motives or even join them at some point, given Obito's connection to the group. It would create a whole new web of relationships that are far removed from what we saw in the original Naruto story.
Obito's influence would likely make Naruto more aware of the darker side of the ninja world. Naruto is usually very optimistic, but with Obito's guidance, he would see the hardships and betrayals that can happen. For example, Naruto might become more cautious in his trust of others.
If Naruto were on Team 8 in fanfiction, his personality could develop in several ways. He may become more empathetic as he gets to know his new teammates better. Hinata's shyness might make him more sensitive to others' feelings, and he would try to encourage her more. Also, being around Shino's quiet and methodical nature could make him more reflective. He might start thinking more about the consequences of his actions before acting, which is a big change from his usual impulsive self. He could also become more competitive in a different way, trying to prove himself not just in combat but also in the more specialized skills that Team 8 values, like tracking and espionage.
It could change it a great deal. For one, Obito might not be as much of a villain. His alliance with Naruto could lead to a united front against Madara much earlier. This would mean less destruction and death in the ninja world. Also, Naruto would have a powerful ally who has a deep understanding of the Sharingan and its powers. They could develop new jutsu together, changing the power dynamics in battles.
Well, Naruto's personality would have an interesting transformation. He would likely become more of a risk - taker. The pirate world is full of uncertainties and dangers, and Naruto would embrace this. He might become more laid - back in some ways, enjoying the simple pleasures of life at sea like drinking grog (if they have something similar in this fanfiction world) and singing sea shanties. But at the same time, his competitive nature would still be there. He'd want to prove himself as a great pirate, perhaps competing with other well - known pirates. His naivete might also change a bit. While he was often naive in the ninja world, the harshness of the pirate life would make him more street - smart, yet still retain his positive outlook on life.
Naruto's personality would become more calculating. While he's always been headstrong, as a mafia boss, he'd have to think several steps ahead. He couldn't just rush into things like he did in his ninja days. He'd still be loyal, but that loyalty would be more towards his mafia family. His cheerful and sometimes naive side would probably fade a bit as he'd be dealing with more underhanded and dangerous people. He'd need to be more secretive and not show all his cards at once.