Gaara could be one of his potential allies. Since they have a history together and Gaara has changed a lot, he might support Naruto. Also, the Raikage might become an ally if Naruto can prove that his intentions are good for the entire ninja world.
Well, in the 'Naruto goes to the Kage Summit' fanfiction, Naruto could be in for a wild ride. He might be representing Konoha in some crucial discussions. There could be political intrigue among the Kages, and Naruto, being Naruto, would probably try to cut through all that and promote unity. He may also show off some new jutsu he has learned to gain the respect of the other Kages.
Jon Snow might be an ally too. He has a good heart and is used to dealing with different cultures and powers. He and Naruto could bond over their shared experiences of leadership and fighting for what's right.
In this fanfiction, Naruto might find allies among the shinobi who were also wrongly exiled from their own villages. They would share a common bond of being outcasts and would fight together against the system that exiled them. Additionally, there could be some rogue ninja with a sense of justice who believe in Naruto's cause and decide to stand by his side in the war.
The fanfiction might explore Dark Naruto's motives during the Kage Summit. He could be on a mission to expose the secrets that the Kages have been hiding from the shinobi world. His actions at the summit could be a way of shaking up the established order. For example, he might reveal a conspiracy among the Kages that has been affecting the balance of power in the ninja villages. This would not only put the Kages in a difficult position but also force the other shinobi present to re - evaluate their loyalty.
He could meet some space - faring ninjas who have adapted to the space environment. They might have unique chakra powers related to the cosmos.
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.
Sasuke could potentially be an ally. Even though they've had their differences, Sasuke might understand Naruto's situation and decide to help him. Also, some of the Jinchuriki he's met before could be allies. They might see Naruto as one of their own and support him during his exile.
Even characters from other villages could potentially be allies. For example, Gaara. In the game world, he and Naruto could form a powerful duo, with Gaara's sand - based attacks complementing Naruto's Rasengan - like moves. They could fight together against common in - game threats.
Sasuke could be one to stop Naruto. They have a complex relationship and Sasuke might understand Naruto's motives and be able to talk him down.
Perhaps in the fanfiction, there are internal power struggles within the villages that are revealed at the Kage Summit. A young ninja from one of the villages might try to influence the decisions of their Kage during the summit. There could also be a cultural exchange aspect, where the Kages learn about each other's villages' traditions and find ways to incorporate beneficial elements into their own villages.