In 'watch your back naruto fanfic', Naruto is almost surely a main character. He's the protagonist of the Naruto series, so in any fan - made story related to it, he would be central. However, new characters could also be introduced. For instance, an anti - hero who initially seems like an enemy but later becomes an ally in Naruto's fight to survive and watch his back. And of course, Naruto's long - time friends and comrades are likely to be involved as well, as they often support him in times of danger.
Typically, Naruto would be one of the main characters. Since it's related to Naruto, he's likely at the center of the story. There could also be his friends like Sasuke, Sakura, Kakashi etc. depending on the direction the fanfic takes. They might play important roles in helping Naruto 'watch his back' against the threats in the story.
Obviously Naruto is one of the main characters since it's in the title. But there could also be his friends like Sasuke and Sakura. They might play important roles in understanding why Naruto is holding back and how they can help him overcome this issue.
I'm not sure specifically as there could be many different 'watch your back naruto fanfic' stories out there. It might involve Naruto facing new and unexpected threats or enemies that he has to be cautious of. Maybe it's about a conspiracy in the Naruto world where he has to watch his back to avoid being betrayed or caught off - guard.
Since I haven't read the story, I can't say for sure. But it's likely that the killer is one of the main characters.
Well, Naruto is most likely one of the main characters since it's a Naruto fanfic. He's the central figure in the original series, so it's very likely he'll play a major role in this fanfic as well. Sasuke might also be a main character, as their relationship is a crucial part of the Naruto story.
Definitely Naruto himself. He is the one Konoha wants back, after all. And then there would be his old friends like Sasuke. Sasuke might play an interesting role, either helping Konoha get Naruto back or being a bit hesitant because of his own complex relationship with Naruto. Also, characters like Iruka - sensei, who has always been like a father figure to Naruto, would be important. He could be the one who first realizes how much Konoha needs Naruto and starts the ball rolling to get him back.
Most likely, Marty McFly would still be one of the main characters. He's the central figure in the original movies and would probably play a major role in the fanfic set in 2015. Doc Brown would also be there, as he's the inventor of the time - travel technology and Marty's mentor. There could also be Biff Tannen or his descendants, as they often cause trouble in the 'Back to the Future' universe.
Iruka Sensei might be important too. He was one of the first people to show kindness to Naruto. He could be a key figure in making the village understand that Naruto is worth having back. Also, Sasuke might be involved. If he has reconciled with the village, he could see the value of Naruto's return and help in the process.
It could be the village elders. They often have a lot of power and influence in the Naruto universe. If they believe Naruto is a potential threat or they have some ulterior motives, they could be the ones holding him back, thus acting as antagonists.
I'm not sure specifically as it depends on the particular 'I'm back fanfic'. It could be a returning hero from a well - known story. For example, if it's a superhero fanfic, it might be a superhero who was thought to be dead or missing.
Another possibility is that it could focus on some of the recurring characters from the show but give them a more prominent role. For instance, Castiel could be a main character in this fanfic, and the 'back in black' concept could be related to his journey or a new aspect of his powers.