Obviously Naruto himself is a common character. Then there's usually Kakashi. He might play an even more important role in Naruto's magically - influenced upbringing, perhaps as a mentor who has to adapt to Naruto's new abilities. Sakura could also be a prominent character, and her relationship with Naruto might change due to his different upbringing. She could be more in awe of him or even a bit jealous of his newfound powers.
One interesting plotline could be that Naruto is raised by a powerful and mysterious clan. This gives him access to unique jutsu and training methods early on, making him even more powerful than in the original series. He might also have different relationships with the other characters, like a more complex bond with Sasuke as they both come from different upbringings now.
One possible scenario in this fanfiction could be that Naruto grows up with a more balanced upbringing. Tsunade might teach him medical ninjutsu and how to control his emotions better. Jiraiya, on the other hand, would surely train him in powerful combat techniques and in the ways of the sage. Naruto would probably be more mature and well - rounded at an earlier age, with a combination of Tsunade's tough love and Jiraiya's adventurous spirit guiding him.
One possible scenario in this fanfiction could be that Naruto grows up with the Namikaze Clan's unique jutsu training methods. He might inherit some of Minato's (a Namikaze) speed and intelligence in combat at a much earlier age. This could lead to him being a more confident and skilled ninja from the start, as the Namikaze Clan has a reputation for their strong abilities.
In a Naruto - raised - Jedi - and - Sith fanfiction, Naruto would bring his unique perspective. His own experiences of being an outcast and then a hero in his world could shape how he raises these Star Wars characters. He might introduce the concept of teamwork like in his ninja teams to the Jedi, who already have a sense of community. With the Sith, he'd be faced with a huge challenge as the Sith ideology is based on self - gain and power - hunger. Naruto could use his own story of facing powerful enemies and not succumbing to evil to try and steer the young Sith away from the dark path.
In this fanfiction, Lulu is likely a character who has the task of raising Naruto. She could be from a different realm or have a very different background from the Naruto universe. Maybe she's a sorceress or a wise woman with her own secrets and powers that she imparts to Naruto as he grows up.
If Naruto was raised by the Straw Hats, he'd probably be a very different person. He might be more carefree like Luffy. For example, he'd be used to the wacky adventures on the Grand Line. His ninja skills could blend with the pirates' combat styles, creating some really unique fighting techniques.
Naruto would likely be more confident. With the Sannin as his guardians, he'd have access to top - notch training and knowledge. He might not have the same insecurities as in the original series. For example, Tsunade could help him with his self - esteem, Jiraiya with his understanding of the ninja world, and Orochimaru (in a reformed way) with his knowledge of forbidden jutsu, making him a more well - rounded and confident shinobi.
His relationship with Sasuke would likely be very different. Without the shared experiences in Konoha, their initial rivalry might not be as intense. Naruto might not be as desperate to bring Sasuke back. And his relationships with his other Konoha friends like Sakura and Kakashi would also change. He'd be more connected to Yugito's friends and allies instead.
He'd probably be more cautious. Quarians live in a fragile environment, and Naruto would grow up learning to be careful. So, instead of his usual head - on approach, he might think more before acting.