His character could become more adaptable. Having to deal with a whole new world, he'd learn to be flexible. He might also become more empathetic as he meets different kinds of people with different problems.
Naruto's character would likely develop in many ways. In the new world, he might face new challenges that test his beliefs. For example, if the new world has different ideas about power and justice, he would have to reevaluate his own views. He may also become more self - reliant as he doesn't have his usual friends and support system right away. His experiences in this new world could make him more empathetic towards different races and species, as he discovers new ways of living and interacting.
Well, he might use his ninja skills to become a hero in that world. He could teach the locals about chakra and how to fight like a shinobi. Maybe he'd make new friends and form a team to face the challenges there.
Naruto's character would become more disciplined. Goku's strict training regime would instill a greater sense of self - control in Naruto. He'd be less impulsive in battles.
Naruto's character could become more solemn. The presence of the Shinigami and the nature of its teachings might make Naruto more aware of the weight of life and death. He'd likely grow in wisdom.
His character would likely become more complex. Having a gun would give him an edge that he didn't have before, which could make him more confident or even a bit cocky at first. But he'd also have to deal with the moral implications of using such a deadly weapon. He's always been about protecting his friends and the village, but a gun is a very different kind of weapon compared to his ninja tools.
He'd become more versatile. With the Omnitrix, he'd have to learn about different alien cultures and powers, which would make him more open - minded.
Naruto may become more cautious. With the curse mark, he realizes the power is dangerous and he has to be careful not to lose control. This makes him think twice before acting recklessly in battles.
In this fanfiction, Naruto's character development is multi - faceted. Physically, he becomes stronger and faster through the rigorous training. Mentally, he learns patience. Kakashi's training methods might include waiting for the right moment to strike or endure long periods of stealth. This teaches Naruto to be more patient in combat and in life. Emotionally, he matures. He may face setbacks during the training and learn to deal with failure in a more constructive way. Instead of getting frustrated and giving up, he uses it as a motivation to improve. All these aspects combined shape Naruto into a more well - rounded and capable ninja.
Naruto's character often becomes more complex. He has to deal with the added burden of the curse mark, which can make him more introspective.
Naruto may become more guarded. After being cheated on by Sakura, he'll be less likely to open up to people easily. He might seem tougher on the outside.