I don't know for sure as I haven't read it. But I assume Naruto would be one of the main characters since it's in the title. And the other characters related to the 'two suns' concept might be important as well, perhaps two original characters created by the fanfiction author.
Since I haven't read the 'naruto my two suns fanfiction', it's difficult to determine the main characters. However, given the title, Naruto is likely to be a central figure. The 'two suns' could refer to two other well - known Naruto characters who play a significant role in this fan - created story, or they could be entirely new characters designed to add a fresh perspective to Naruto's story.
I'm not sure specifically as I haven't read this exact fanfiction. But generally, in Naruto fanfictions, it could be about new adventures, relationships, or power - ups for the characters. It might center around Naruto and two important elements or characters that are symbolically like 'two suns' in his life.
Another common type of main character could be a healer. In a world full of death and darkness, a healer is essential. They use their powers to keep the other characters alive during their battles and quests. Their presence gives a sense of hope among all the doom and gloom.
Since I haven't read this particular fanfiction, I can't say for sure. But it could be the'son of suns' character as the main protagonist, and perhaps some classic Star Wars characters like Jedi knights or Sith lords who interact with him.
Since it's a fanfiction, the main characters could be any two characters from the Naruto series. It might be Naruto and Sasuke, as they are very popular characters and their relationship has a lot of potential for such a story. They could put aside their differences and form an army together.
Naruto is the main character without a doubt. Besides him, characters like Hinata could be important. Hinata has deep feelings for Naruto, and if Naruto is in a strange state of being between two worlds, Hinata might play a role in bringing him back or helping him through it. Also, Pain could be a significant character if the two worlds are related to the different ideologies that Pain and Naruto represent, such as Pain's view of a world in pain and Naruto's view of a world at peace.
One of the main characters is Ida Mae Gladney. She is a sharecropper's wife from Mississippi who decides to leave the South for Chicago in search of a better life. Another important character is George Starling. He is a young man from Florida who has to flee due to threats from the white establishment because of his activism.
The Jinchuriki of the Two Tails, Yugito Nii, is often a main character. She has a complex relationship with the tailed beast inside her.
It's hard to say for sure without reading it, but it could include Naruto himself as the concept of the shinobi way is central to his character. There might also be Sasuke, as his journey also ties in with the shinobi way in many ways.
Luke Skywalker is often a popular character. His journey and growth in the Star Wars universe are well - known, and in Twin Suns fanfiction, he can be further explored in new and exciting ways.
Kankuro is another possible main character. He's a puppeteer from the Sand village. Fanfiction might delve into his growth as a ninja, his relationships with his siblings, or his development of new puppet techniques.