Naruto's sense of justice could be enhanced in a different way. As a Predator, he might view threats more objectively and act more decisively. He could become more of a protector not just of the Hidden Leaf, but also of the wider ninja world. His new powers would give him the means to take on bigger threats, and his character would grow to accommodate this new role as a more powerful and somewhat alien - like protector.
His character would likely become more solitary. The Predator nature might make him more inclined to work alone at first. For example, he might start to go on solo missions more often. However, his loyalty to his friends would still be there deep down, and he'd gradually find a balance between his new solitary tendencies and his old social bonds.
Naruto would become more of an enigma to his friends. With the Predator - like abilities, he'd have new powers and behaviors that are hard to understand. He might start to communicate less in the traditional way, relying more on his new instincts. But as time passes, he could learn to bridge the gap between his old self and this new Predator - influenced self, and his friends would come to understand and respect this new side of him.
His character could become more serious. Since Creepypasta is full of dark and spooky elements, Naruto might lose some of his naivete. He'd be more aware of the potential threats that lurk in the shadows, both in the real ninja world and in the world of his newfound interest.
His character would develop in many ways. Firstly, his physical strength and endurance would skyrocket. He'd be used to Spartan training which is extremely harsh. Emotionally, he might become more reserved as Spartans don't show emotions as openly as ninjas. His relationships would change too. His friends might see him as a different person, but Naruto would still hold onto his core values of protecting his loved ones. He could bring Spartan values like loyalty and courage in a new and extreme way to the ninja world, influencing those around him to be more like Spartans in terms of their fighting spirit and tenacity.
Naruto's sense of identity would be challenged. He was known as the hero of Konoha, but as a ronin, he is an outsider. This could make him more introspective. He might question his past actions and beliefs. He could also become more empathetic towards those who have been marginalized in the ninja world, as he now shares a similar experience.
Naruto's character would likely become more solitary as necromancy is not a common or well - liked art. He'd have to hide his new power at first. As he gets more used to it, he might become more brooding and less of the carefree Naruto we know, constantly thinking about the balance between life and death.
His character would become more open - minded. Naruto is already adventurous, but Bakugan would expose him to a completely different kind of world. He would learn new strategies and ways of thinking from Bakugan battles, which would make him a more well - rounded fighter in both ninja and Bakugan battles.
If Naruto becomes the Kyuubi in the fanfiction, his character development would be a wild ride. He'd start as a regular boy with big dreams, but once he becomes the Kyuubi, he has to face a whole new set of challenges. He has to learn to control his new form and power. This might make him more serious and less carefree as he used to be. He also has to deal with how others perceive him now. Some might fear him, some might worship him. All these things would shape his character in different ways, making him more mature and perhaps a bit more jaded.
He would become more responsible and diplomatic. Naruto as Hokage has to think about the whole village and not just his personal feelings. His impulsive nature might be toned down a bit.
Naruto's character would likely become more serious. The burden of his new heritage as Sparda's son would force him to grow up faster. He might not be as carefree as before.
His character would become more adaptable. Since Kumo is a different place, Naruto would have to quickly learn to fit in. He'd become more independent as he doesn't have his old support system from Konoha. His loyalty might be questioned at first, but as he proves himself, his new Kumo comrades would trust him.
Naruto would become more mature. Jiraiya's influence would make him think more about the long - term consequences of his actions. He'd also become more strategic in battles as Jiraiya is a master strategist.