Minato Namikaze might also be a central figure in some of these fanfictions, even if he's not alive. His past actions and the secrets of the Namikaze bloodline he passed on to Naruto could be explored. For example, there could be flashbacks showing how he discovered certain powers within the bloodline or how he used them to protect the village in the past.
Often, characters like Sasuke are also involved. He could be either a rival or an ally to Naruto in these stories. The contrast between the Uchiha bloodline (Sasuke) and the Namikaze bloodline (Naruto) can create some really interesting storylines, like them teaming up to face a common enemy that is a threat to both bloodlines.
Naruto himself is obviously a main character in most of these fanfictions. Since it's about the Namikaze bloodline and he's the son of Minato Namikaze.
Naruto himself is often a central character. Since he has his own unique chakra nature and potential, fanfictions might explore how his own abilities interact with different bloodlines. Sasuke is also common, given his Sharingan bloodline. Hinata could be involved as her Byakugan bloodline is quite interesting. And sometimes, new or original characters created specifically for the fanfiction might also be main characters, especially if they possess some sort of rare or infamous bloodline.
Sometimes, it's an existing Naruto character who is given the Light Release bloodline in an alternate universe story. For example, Naruto himself could be given this bloodline, which would change his fighting style completely. He could use his natural exuberance and combine it with the light powers to create some really unique and powerful jutsu.
Naruto Uzumaki is often associated as he has ties to the Namikaze clan through his father. He could be a central character in exploring the Namikaze clan doujutsu, either as a potential wielder or someone trying to understand it. Another could be Minato Namikaze, Naruto's father. His own abilities and knowledge could be crucial in uncovering the secrets of the clan's doujutsu.
Naruto himself is often a central character in 'naruto destruction fanfiction'. Since he is the main protagonist of the original series, fanfiction writers like to put him in situations where he has to deal with destruction. Sasuke is also frequently involved as his rival, and their relationship can be explored in the context of destruction, like if they have to work together to stop a greater threat of destruction.
Well, Naruto is obviously a main character in most of these. But there could also be Sasuke. He might be either an ally or an adversary in relation to the dagger. For example, if the dagger has a power that can either be used for good or evil, Sasuke could be tempted by its darker potential.
Some fanfictions might also include characters like Kakashi in important roles. As Naruto's former teacher, he could be a guiding figure or someone who has to adapt to Naruto's new level of power. He might also be involved in trying to keep Naruto's power in check if it starts to have negative effects on the ninja world.
Naruto himself is often a main character in naruto helmet fanfiction. Since he is the protagonist of the original series, it makes sense that he would be involved with a special helmet in fan - created stories. He could discover the helmet's powers and use them to become even stronger.
Naruto himself is often involved. Since he's the main character of the original series, in fanfiction with loopholes, he might use some loophole to achieve his goal of becoming Hokage faster or getting stronger in a unique way. Sasuke could also be a main character in such fanfictions. He might find a loophole to deal with his quest for revenge or his power - seeking in a different manner.
In many Naruto scream fanfiction, Kakashi Sensei can also play an important role. He might be trying to teach Naruto how to control his scream in a more strategic way, or he could be using Naruto's scream as a signal during a mission. Also, characters like Jiraiya might be involved. Jiraiya could be training Naruto to use his scream as a form of attack or defense, as part of some new and unique jutsu.
Definitely Naruto as the victim of hypothermia. Shikamaru could also be involved. He might be the one strategizing the rescue mission, using his intelligence to figure out where Naruto could be in the cold environment. And Hinata might be there too, her concern for Naruto adding an emotional aspect to the story.