How does Naruto's personality change when he becomes a Shinigami in fanfiction?

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.

Naruto might become more calculating. Since Mewtwo is very intelligent and has powerful psychic abilities, Naruto would have to use his mind more. He would think before acting, unlike his impulsive self in the original series. This change could make him a better strategist in battles, but it could also lead to misunderstandings with his friends who are used to his more straightforward and impulsive nature.

If Naruto becomes a Hunter Nin in fanfiction, his personality would change significantly. He'd be more calculating. His usual impulsive nature would have to be toned down because one wrong move as a Hunter Nin could mean disaster. He might also become more solitary, used to working alone in the shadows rather than in a team. His sense of humor might also be more subdued as he takes on this serious and dangerous role.

His personality might become more aggressive. The demon nature could bring out his primal instincts, making him less patient and more prone to anger.

He might become more serious. He realizes the weight of his responsibilities, so he's not as carefree as before. But he still tries to keep his positive and determined attitude.

He might become more cunning. Just like a fox, he would be able to outwit his enemies more easily. He could use trickery and deception in battles, setting traps for his opponents.

He becomes more decisive. As a leader, Naruto can't afford to be indecisive like he sometimes was in his youth. He has to quickly make choices that affect the whole village or group he's leading.

He might become more patient. As a dad, he has to deal with his kids' tantrums and mistakes, so patience is key.

His personality might become more reserved. As a Cullen, he'd have to fit into their more subdued lifestyle. He might lose some of his brashness.

He might become more cynical. Instead of seeing the good in people like he used to, he starts to suspect everyone's motives. For example, he may no longer trust his friends easily.