It could also be an original character. Maybe a young ninja from a small, unknown clan who discovers a time - travel jutsu. They travel back to the clan wars to prove their worth to their clan. Once there, they have to navigate the complex world of the clan wars, make alliances, and fight battles, all while trying to find a way back to their own time.
Naruto himself would be a great choice. He has a strong sense of justice and his time - traveling could lead to some interesting changes in the clan wars. He might try to end the wars early and bring peace among the clans. His unique abilities and personality would also make for an exciting story.
Sasuke could also be the main character. He has a connection to the Uchiha clan, which was deeply involved in the clan wars. His time - traveling could be related to uncovering the truth about his clan's past and maybe changing some of the events that led to the Uchiha's downfall. He could use his Sharingan in unique ways during the clan wars era.
It could be a young Naruto Uzumaki, exploring his family's past during the clan wars era. He might discover secrets about the Uzumaki clan that have been long forgotten.
Naruto himself could be a main character, using his skills and influence to try and stop the clan wars. Another could be a young shinobi from a minor clan who has a special ability and wants to prove their clan's worth. And Sasuke could also be involved, perhaps having his own motives related to the clans.
Naruto himself could be a likely time traveler. He has a strong sense of justice and a desire to prevent tragedies. If he learned of a way to travel back in time to the clan wars, he would probably try to stop the bloodshed and promote peace among the clans. Another possibility is Sasuke. Given his past and his connection to the Uchiha clan, he might want to go back to the clan wars to change the fate of his clan, especially the massacre.
A female shinobi who defies the traditional gender roles in her clan during the wars would make an interesting main character. She could break barriers and show that women can be just as powerful and important in the shinobi world as men, and her actions could have a significant impact on the outcome of the clan wars.
A young and curious Pokemon trainer would be a great main character. They're always eager to learn and explore, so the concept of time travel would be both exciting and a bit scary for them. They could start off as an ordinary trainer in their own time, but then through some strange event, get sent back or forward in time.
Oscar could be an interesting main character for a time travel RWBY fanfic. As Ozpin's current host, he has a connection to a long history of events in Remnant. Time traveling could allow him to learn more about Ozpin's past directly, and he could also use his new - found knowledge to change things for the better in the present and future of Remnant.
A new, original character could be the main character in a Beyblade time travel fanfic. This character could be a young up - and - coming Beyblader who has a natural talent but is still learning. Time - traveling would be a huge adventure for them, as they would be exposed to different Beyblading cultures and techniques. They could grow and develop their skills in unexpected ways during their time - traveling journey and become a legend in the Beyblading world.
In a 'Naruto Time Travel Clan Wars' fanfic, a time - traveling character could be a descendant of one of the clans involved in the wars. They go back in time with the mission to retrieve a lost clan heirloom or secret technique. Once there, they get caught up in the clan politics and battles. Their actions during this time could either make the clan stronger in the future or lead to its downfall, depending on their choices.
The main conflict could be Naruto's struggle to fit into the very different social and cultural norms of the Warring Clan Era. As a time - traveler, she has modern ideas and values that might clash with the more traditional and clan - centric views of that time.
A scientist involved in the Halo Wars technology could be the main character. They might be accidentally sent into the future while working on some time - travel experiment related to the war. In the future, they could use their scientific knowledge to understand the new technologies and perhaps find a way to reverse some of the negative effects of the long - running war.