His personality might become more carefree like Luffy's. He would probably be more laid - back and not worry as much about formalities.
If Luffy was raised by Whitebeard in fanfiction, his personality would undergo several changes. He would still be the kind - hearted and adventurous Luffy we know, but with added layers. He would probably be more protective of his crewmates, not just in a fight - or - flight way but in a more paternal way like Whitebeard. His sense of justice might also be influenced by Whitebeard's own moral code. He might be less impulsive when it comes to making decisions that affect the whole crew. Instead of just following his gut instincts all the time, he would consider the well - being and opinions of his crewmates more. Also, his leadership style could be a blend of his natural charm and Whitebeard's strong leadership, making him an even more formidable captain.
Naruto's upbeat and positive personality would be a huge change. He's always been able to make friends easily, and in Hogwarts, he'd probably have a much wider circle of friends from different houses right from the start. This could lead to a more united Hogwarts against Voldemort. His never - give - up attitude would also be a big factor. When facing challenges like the Triwizard Tournament or dealing with Voldemort's threats, he wouldn't be as easily daunted as Harry was at times.
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.
If Luffy had a Devil Fruit that made him invisible, it could make him a bit more mischievous. He might start playing pranks on his crewmates more often. But his core values of loyalty and determination would remain. He would still use this power for good in battles, sneaking up on enemies and catching them off - guard. The new power would just add a different flavor to his already vibrant personality.
Luffy would probably still value his friends above all else. However, as a Celestial Dragon, he might have more power at his disposal. This could make him a bit more confident in his actions, but also more responsible. He might feel the need to use his influence to protect not just his crew, but also the oppressed people he meets, in a more official way.
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.