Naruto might become more secretive. Growing up in the Snake Clan, which is often associated with secrecy and hidden motives, he could pick up on their ways of not revealing too much about himself or his plans. For instance, instead of being as open and brash as in the original series, he would be more guarded in his conversations.
He could also be more calculating. The Snake Clan values intelligence and strategic thinking. So, Naruto would likely develop a more strategic mind. He might think several steps ahead in battles and in dealing with political situations in the ninja world. This is different from his more impulsive nature in the original story where he often acts on his emotions first.
Naruto's personality would be a complex mix. On one hand, he might become more reserved due to Vader's influence. But on the other hand, his natural inclination towards goodness might cause him to constantly struggle against Vader's darker teachings. He could be a much more conflicted individual, with his usually open - hearted and friendly personality warped by the dark environment he was raised in. He might be more secretive and less trusting of others as well.
His core Naruto - like personality of being determined and never - giving - up would still be there. But he might become more refined and elegant like the elves. He would probably have more patience due to the elven influence. His boisterousness might be toned down a bit, but he would still be the energetic Naruto at heart, just with a more elven - like exterior in terms of behavior.
Naruto's personality might become more calm and centered. Yoda could teach him to control his impulsiveness. So instead of rushing into things, he'd think more before acting.
He'd probably be more aggressive. The xenomorphs are aggressive creatures, so Naruto might not be as friendly as in the original story.
His personality would likely be more stoic. Kisame is a rather reserved and tough character, and growing up with him would probably make Naruto less exuberant. He might not be as quick to trust others as he is in the original story.
He'd be more disciplined. Samurai culture emphasizes self - control, so Naruto would be less impulsive.
His personality might become more refined. Instead of being the rowdy Naruto we know, he could be more composed and polite due to the influence of the daimyo's court.
Naruto could be more empathetic towards the Uchiha's cause. Since Mikoto is his mother figure, he would be exposed to the Uchiha's history and their grievances from a young age. This would make him more understanding of Sasuke's later actions and more likely to try and find a peaceful solution for the Uchiha's problems.
His sense of humor would be different. Anko has a dry and sometimes dark sense of humor. So Naruto might crack jokes that are a bit more on the sarcastic side and less goofy. For instance, instead of his usual over - the - top pranks, he might play more calculated and sneaky pranks inspired by Anko. Also, he would be more confident in his own abilities from an earlier age, as Anko would encourage him to trust his instincts.
He might be more aloof. Since a phoenix is a rather otherworldly creature, Naruto could pick up some of its more detached qualities. He may not be as quick to make friends as in the original story, instead observing more from a distance before approaching others.