He might become more vulnerable. As a monster, Godzilla was powerful and feared, but as a human, he would have to face the fact that he could be easily hurt. This could make him more cautious and less aggressive.
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.
Ash would probably become more patient. Rangers often have to wait and observe Pokémon in their natural habitats. This is different from his Trainer days where he was more focused on quick battles and leveling up his Pokémon. He'd also be more diplomatic, since he'd need to work with other Rangers and people in the Pokémon world who might have different opinions on conservation and Pokémon management.
Well, Percy's personality transformation would be complex if he becomes a wolf. He might become more in tune with the natural order. His sense of loyalty could intensify, much like how wolves are loyal to their pack. This could mean that he becomes even more protective of his friends, seeing them as part of his 'pack'. On the other hand, his communication style could change. Instead of relying on words, he might use more body language and growls to convey his feelings. And his relationship with authority might also shift. He could be more resistant to being ordered around, as wolves have their own hierarchy and he might see himself as an alpha in some situations. This new personality would add a whole new layer of depth to his character in the fanfiction.
He might become more brooding. The new powers and the vampiric nature could make him a bit more withdrawn as he tries to understand and control his abilities. But his core of kindness would still be there.
His confidence would likely soar. Naruto has always been confident, but as the Sorcerer Supreme, he'd have an even greater sense of self - assurance. He'd know he has the power to protect and make a difference on a much larger scale. He might also become more reserved in some ways, as he'd have to deal with more serious magical matters and might not be as quick to jump into action without thinking first.
Naruto's personality could become more complex. He was always an optimist as a ninja, but as a shinigami, he might see the darker side of things more often. However, his core values of friendship and protecting others would remain. He might be a bit more reserved in expressing his emotions as the shinigami world may have different social norms. But overall, he'd still be the same Naruto at heart, just with a different perspective on life and death.
He might become more authoritative. Since he has the power of an emperor, he would need to make tough decisions and be more assertive in his commands.
He might become more patient. Blacksmithing requires a great deal of patience, and this could seep into his personality. He would have to be meticulous in his work, which could make him more detail - oriented in his interactions with others as well.
He might become more stealthy and reserved. Instead of being as open as he was in the wizarding world, he'd have to be more secretive as a ninja.
He might become more withdrawn at first. The knowledge of his new, blood - thirsty nature could make him afraid of hurting those he cares about. But over time, he could become more confident in controlling his vampire side and use his newfound power to be more assertive.