Iruka - sensei could be an unexpected ally. He has always been important in Naruto's life. In this fanfiction, he could have some latent sorcerer abilities that he discovers later and uses to support Naruto. His teaching skills could also be applied to help Naruto understand the ways of the sorcerer world better.
Sakura could be one of his allies. Even in a sorcerer - themed fanfiction, her medical skills could be translated into some sort of healing magic within the sorcerer world, and she would always be by Naruto's side.
The other members of Team 7 like Sakura and Kakashi could also be his allies. Sakura could use her medical ninjutsu to heal any injuries Naruto and the team get in space battles. Kakashi could offer his wisdom and combat experience, guiding Naruto in this new and unfamiliar space - filled adventure.
Sasuke could potentially be an ally. Even though they have their differences, in the Akatsuki setting, they might realize they need to work together. Another could be Itachi. Itachi has his own motives and might see Naruto as a key to achieving certain goals within the Akatsuki. Also, Konan could be an ally. She seems to be more open - minded compared to some of the other members and might be swayed by Naruto's positive attitude.
Sasuke could be one of his allies. He might be a rival knight at first but then they realize they have to work together. Sakura could be a healer knight, always there to patch up Naruto and the others after battles. Kakashi could be a wise old knight who gives Naruto advice on knightly matters.
Naruto's allies could include not only his friends from Konoha but also some unexpected characters. Maybe Gaara, as the Kazekage, would form an alliance with Naruto's empire. Their shared experiences of being outcasts in the past could strengthen their bond. Hinata would also be by his side, offering her gentle support and her Byakugan abilities to help in matters of security and intelligence - gathering within the empire.
Definitely, the Akatsuki members who have reformed could be potential allies. They have unique powers and knowledge of the ninja world. Naruto's ability to see the good in people might lead him to recruit some of them. Additionally, the toads from Mount Myoboku could be allies, providing their prophetic knowledge and combat support when needed. And, of course, his old friends from Konoha like Kiba and Choji would come to his aid if the situation called for it.
If Naruto is banished to the My Hero Academia universe, Deku could be his ally. Deku, with his determination to be a hero, would understand Naruto's drive to be recognized. They could share their experiences of being underestimated at first. Also, in a crossover with the Inuyasha world, Kagome could be an ally. She has a kind heart and could help Naruto understand the new world he's in. Her spiritual powers might also interact in an interesting way with Naruto's chakra.
Zero could be one of Naruto's allies. They both have a sense of justice. Zero is fighting against his vampire nature, and Naruto could understand his struggle as Naruto has fought against his own inner demons. Yuki could also be an ally. She's kind - hearted, and Naruto's friendly nature might draw her in.
Sakura could be one of his allies. She would be initially shocked by Naruto's new look in the Vader suit but would quickly realize it's still him. She could use her medical skills to help Naruto if the suit has any negative physical effects on him. Another could be Kakashi. He would be very intrigued by the suit and would use his wisdom to guide Naruto in controlling whatever new powers it gives him.
Kakashi could be an important ally as well. His calm and strategic mind would complement Naruto's more impulsive nature. Kakashi could assist Naruto in analyzing the time - related threats and coming up with effective plans to counter them.
I think the tailed beasts could be his allies too. After all, Naruto has a special connection with them. They could provide their power and unique abilities to help Naruto in his journey to conquer the world. For example, Kurama's strength and the other tailed beasts' various powers could be used in battles or to show Naruto's dominance and ability to control such powerful forces.