Naruto might develop new jutsu altogether. Killer Bee's unique use of ink - based attacks and his ability to transform in creative ways could inspire Naruto. He could start using his own shadow clones in more creative combinations, perhaps using them to create complex ink - like formations or new types of transformation jutsu that are a blend of his and Killer Bee's styles.
Naruto's control over the Nine - Tails' chakra might be different. Since Killer Bee has experience with his own Tailed Beast, he could teach Naruto some new ways to communicate and cooperate with the Nine - Tails. This could lead to Naruto being able to access more of the Nine - Tails' power without losing control as easily as in the original story.
His chakra control might improve in a different way. Sesshomaru's precise and refined combat style could force Naruto to have better control over his chakra. For example, he might learn to use his chakra more sparingly like Sesshomaru uses his demonic energy.
Well, one possibility is that Naruto would learn unique fighting styles from Killer Bee. Since Killer Bee is known for his powerful and unorthodox combat skills, Naruto could incorporate those into his own repertoire. Maybe he'd also pick up on Killer Bee's carefree attitude towards life, which would be a contrast to his usually more serious self in the original series.
Naruto's powers would likely be a blend. His existing ninja abilities like shadow clones might be adapted to Mandalorian combat scenarios. He could use his clones to create diversions while he attacks with Mandalorian weapons. Also, the Mandalorian training in stealth and marksmanship could make his ranged attacks more effective, adding a new dimension to his power set.
As an apprentice to Deathstroke, Naruto's powers would evolve in several ways. His physical strength, which is already significant, could be increased through Deathstroke's intense training regimens. His chakra control might improve to the point where he can perform more complex and powerful jutsu with less effort. Also, Naruto might develop new techniques that combine his ninja abilities with Deathstroke's combat expertise. For instance, he could learn to create clones that can mimic Deathstroke's fighting style, allowing him to confuse and overpower his enemies. Moreover, his ability to adapt to different combat situations, which is a strength of his, would be further honed as he learns from Deathstroke's vast experience in various battles.
Naruto's powers would develop in a more balanced way. Tsunade is not just about brute force like Naruto sometimes tends to be. She would encourage him to learn other aspects of ninjutsu. So, in addition to his regular attacks, he could develop some defensive jutsus based on Tsunade's teachings. Also, his Sage Mode might be enhanced as Tsunade could provide insights on how to better control and utilize natural energy.
Since the Akatsuki often deals with sealing techniques, Naruto's skills with the Nine - Tails' seal could be enhanced in a different way. He might learn to better control the Nine - Tails' power without relying on the methods taught in Konoha. Also, his physical abilities could be trained differently. Maybe he'd focus more on speed and stealth, which are qualities often valued by the Akatsuki.
Well, Naruto might start with a bit more of an energetic and enthusiastic style compared to Killer Bee's smooth and laid - back flow. Naruto's raps could be filled with his own brand of determination and naivete, while Killer Bee has that cool, experienced swagger in his rapping.
Naruto's powers would evolve in a very different way. Aizen's training might focus on the psychological aspect of combat. So, Naruto's chakra control could be enhanced in a way that allows him to project his presence in a more intimidating way, similar to how Aizen can make others feel his overwhelming power. His ninjutsu could also be modified to have hidden elements, like a Rasengan that has a secondary effect that only activates when the opponent least expects it, just as Aizen has multiple layers of deception in his attacks.
His water - controlling powers could be developed for more tactical uses. Instead of just using it in battles against monsters, he could learn to use it for stealth operations, like creating a mist screen to hide movements. Nick Fury might also encourage him to explore other aspects of his powers, like how he can communicate with sea creatures. This could lead to Percy using them as informants or even as allies in missions.
Percy's demigod powers would likely adapt to his assassin lifestyle. He could use his ability to breathe underwater to access hidden underwater lairs or escape pursuers. His strength, which is already enhanced as a demigod, could be further refined to be more precise for things like silent kills. He might also develop new powers related to the assassin's skills, like being able to move faster in the shadows, which could be a combination of his natural speed and some sort of new power influenced by his assassin upbringing.