Well, at first, he would probably be excited about the possibilities that immortality brings. He could take on bigger challenges without the fear of death. But as time passed, he would face the loneliness of immortality. His character would evolve to be more of a mentor figure to new generations of heroes. He would pass on his knowledge and skills, hoping to create a world where his immortality was not always needed to keep the peace.
His character would likely become more complex. He might struggle with the idea of outliving everyone he cares about. His sense of purpose could shift from just protecting Gotham to something larger, like finding a way to end all crime globally since he now has all the time in the world.
His character would likely become more patient. Since he has all the time in the world, he won't be in a rush to make decisions. He could become a great philosopher of magic, spending years thinking about the deeper meaning of spells and magical abilities.
Batman's character development in such a fanfiction is multi - faceted. Firstly, the power of the Lantern ring challenges his self - reliance. He has to rely on the power of the ring as well as his own skills. Secondly, his relationships with other characters change. He may have to work with other Lanterns, and his interactions with his traditional allies in Gotham like Robin or Commissioner Gordon may be affected. His moral code may also be tested as he is exposed to new cultures and situations in the Lantern Corps. Overall, it's a transformation that forces him to reevaluate who he is and what he stands for.
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.
He would become more confident. Having the power to control elements gives him an edge. He would no longer be just a demigod with limited powers but a force to be reckoned with.
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.
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.
Jason Todd's character would likely become more complex. He has his own history of violence and death, but as a Batman fan, he would be influenced by Batman's no - kill rule. This internal struggle between his old ways and the new inspiration from Batman could lead to a lot of character growth. He might start training harder, not just to be a better fighter, but to be a better hero like Batman.