Iruka - sensei would also be very likely to support Naruto. He has always believed in Naruto from the very beginning and would be proud of his achievement. He would see it as Naruto overcoming a great ninja from the past.
Sasuke would probably be one of the first to support Naruto. They have a deep bond and Sasuke respects Naruto's strength. He would see Naruto's victory over Hashirama as a sign of Naruto's growth and power.
Well, one way could be if Naruto has some new, super - powerful jutsu that he's developed. Maybe he's found a way to combine his Sage Mode with his Nine - Tails chakra in a completely new and unexpected way that gives him an edge over Hashirama.
Annabeth Chase is likely to be one of the supporters. She is smart and strategic, and she can come up with plans to help Percy. Grover Underwood, Percy's satyr friend, might also be there. He can use his nature - related powers to help in the fight. Maybe some of the other demigods from Camp Half - Blood like Jason Grace or Piper McLean could also show up to support Percy.
Sakura might support Naruto. Despite the exile, she could believe in his innocence and try to find ways to help him. Also, Kakashi, who has always had a connection with Naruto, would be likely to support him. He might secretly provide Naruto with some resources or training advice.
Sasuke could be one of the characters to support Naruto. They have a deep bond, and Sasuke might understand Naruto's reasons for wanting to change Konoha. Also, Shikamaru, being a smart strategist, might see the potential in Naruto's plan and choose to support him.
Sasuke could be one of the characters to support Naruto. Given their complex relationship and Sasuke's own issues with Konoha in the past, he might see Naruto's cause as just. Another one could be Jiraiya. If he were alive and found out about the real reasons behind Naruto's revenge, he might side with Naruto as he always cared for him deeply. Also, some of the outcast ninja within Konoha, like those who have been discriminated against because of their bloodline or lack of skills, might support Naruto as they also have grudges against the village system.
Hashirama's revival might also bring back old wisdom and knowledge. He could teach the new generation of shinobi things that have been lost over time. However, there could also be political issues. Some might not be happy with a long - dead Hokage coming back and potentially interfering in current affairs. And his revival could also have an impact on Naruto's own growth. With Hashirama around, Naruto might have to re - evaluate his role as a leader and a shinobi.
An ancient evil force that was sealed away by Hashirama long ago could be released in Naruto's time. This entity, having a grudge against Hashirama for imprisoning it, would see Naruto as an obstacle too since he's allied with Hashirama. It could have powers that are completely unknown to the modern ninja world.
His friends like Sasuke would most likely support him. Sasuke, having walked a long path of redemption, would see Naruto's vision of an empire as a way to finally achieve the peace they both have been longing for.
I think some of the younger ninjas in the village would support Naruto. They look up to him as a role model. Also, those who have been helped by Naruto in the past, like the families of the villagers he saved. They would see that Naruto is fighting for what's right and would stand with him against the council. Additionally, some of the outcast ninjas who feel oppressed by the council's rules might also join Naruto.
The villagers of the Land of Waves would surely support Naruto. They have suffered a great deal under Gato's rule, so they would see Naruto as their savior. Also, Sasuke might support Naruto. Even though they have their differences, Sasuke would recognize the need to stop someone as evil as Gato.