He might become more confident in battle. Naruto is already a confident character, but with the Iron Man armor, he would have newfound power at his disposal. This could make him a bit more brash, like Tony Stark at times. For example, he might be quicker to jump into dangerous situations knowing he has the armor's protection.
Naruto's usually upbeat and determined personality could become darker. The T - virus might make him more withdrawn as he starts to feel different from everyone else. He might be afraid of hurting his friends, so he'd push them away.
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.
His fighting style would be completely different. Instead of relying mainly on his shadow clones and Rasengan, he could use iron sand for both offense and defense. For example, he could create iron sand spears to attack his enemies or form an iron sand shield to protect himself and his comrades.
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.
His personality would likely be more subdued. Ebisu is a rather proper and disciplined character, so Naruto would probably be less rambunctious.
He might become more wild and instinctive. Tailed beasts are known for their raw power and basic instincts. So Naruto could be more impulsive, acting on his first thoughts rather than thinking things through. For example, in a fight, he might not hold back as much as he usually does as a normal ninja.
He would probably become more diplomatic. Naruto is already good at making friends, but as a Daimyo, he would need to be more tactful in his interactions with other leaders. He would have to hold his tongue more and think before speaking to avoid international incidents.
His personality could become more calculating. Since Cell is a rather cunning and strategic being, Naruto might start to think more like a tactician. He'd still have his core values of protecting his friends and the village, but he'd approach battles with a different mindset.
If Naruto were to become an angel in fanfiction, his personality would experience a significant transformation. His boisterous nature might be toned down a bit as he takes on a more solemn and wise demeanor. He would still be the kind - hearted Naruto we know, but his understanding of good and evil would be deeper. His compassion would extend not only to his friends and villagers but also to his enemies. He would strive to redeem them rather than simply defeat them, seeing the potential for good in everyone, which is a very angel - like trait. His sense of justice would also be more refined, based on a celestial understanding of right and wrong rather than just the ninja code.