Obviously, Naruto is one of the main characters. And then there would be the cats that raise him. They could be a group of cats with different personalities, like a wise old cat that imparts wisdom to Naruto, and a young, energetic cat that keeps Naruto active and playful.
It could also include other jinchuuriki from the Naruto universe. For instance, Killer Bee might be a part of it. He has his own unique relationship with his tailed beast and his inclusion could add more depth to the story. Maybe the story focuses on how these three jinchuuriki, Naruto, Gaara, and Killer Bee, interact and support each other while being raised together.
Naruto and Sheogorath are the two most likely main characters. But there could also be appearances from some of Naruto's original friends like Sasuke and Sakura, though their relationships with Naruto would be very different. They might be more like outsiders looking in on Naruto's strange new life under Sheogorath's influence. Also, characters from the Sheogorath's world might make an appearance in the fanfiction, further complicating Naruto's life and the overall story.
Obviously, Naruto and Alduin would be the main characters. Naruto is the one being raised, so his growth and development under Alduin's influence would be central. Alduin, on the other hand, is the one doing the raising. His motives, his power, and his relationship with Naruto would be key aspects of the story.
Obviously, Naruto would be one of the main characters. And there could be a Pokémon trainer who raises him. Maybe someone like Ash from the Pokémon series could make an appearance as a mentor - like figure to Naruto. Also, Naruto's friends in the ninja world could interact with the Pokémon, so they could also be important characters in this fanfiction.
In this fanfiction, there might be a Kiri - native ninja who discovers Naruto when he's just a child and takes him in. This character would be an important one, as they would be the one to introduce Naruto to the ways of Kiri. Also, there could be a group of anti - Naruto shinobi in Kiri who see him as a threat to the village's traditions and try to drive him out. They would be antagonists in the story.
Obviously, Naruto and Erza would interact a great deal. Naruto would also probably interact with Erza's friends from Fairy Tail. He might meet Natsu and they could have some interesting battles or friendly competitions. He could also interact with Lucy, and perhaps learn about celestial spirits from her.
One interesting plot could be Naruto learning unique ninja skills from the cats. Maybe the cats teach him how to move stealthily like they do when stalking prey. Another could be Naruto developing a special bond with the cats that gives him an edge in understanding his opponents' movements, as cats are very perceptive.
Maybe a wandering merchant or traveler who discovers Naruto outside the village and takes him under their wing for a while. This character could introduce Naruto to different cultures and ways of life, which would greatly influence his character development in the fanfiction.
Well, there could be some Egyptian pharaohs. Maybe a young pharaoh who becomes friends with Naruto. They could learn from each other, with the pharaoh teaching Naruto about Egyptian governance and Naruto teaching the pharaoh about ninja skills. Another character could be an Egyptian priest who is initially suspicious of Naruto but later comes to respect him.
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.