Deidara is the most obvious one. Since he is the main user of explosive clay in the Naruto series, he often features prominently in such fanfictions. His unique art - based combat style makes for interesting storylines.
Sasuke could also be involved. Imagine a scenario where Sasuke has to face off against Deidara's explosive clay techniques and has to develop new strategies to counter them. Fanfictions might explore their battles and how Sasuke's Sharingan could potentially see through the weaknesses in the explosive clay attacks.
One interesting Naruto explosive clay fanfiction could be about a new character who has a unique way of using explosive clay that surprises everyone in the Naruto universe. Maybe they use it to create beautiful yet powerful sculptures that can be used in battle.
Obviously, the priestess herself is a main character. She is often depicted as having unique spiritual powers and a mysterious background. Naruto also frequently appears, as his story is intertwined with the events in the Naruto universe. Sakura could also be involved, perhaps as a friend or an ally to the priestess, using her medical skills to support the priestess in her quests.
Naruto is often a main character in these fanfictions. Since he's the protagonist of the original series, it's natural for him to be involved in stories about new techniques like the nerve strike. Sasuke is also a common character. His skills and rivalry with Naruto can be incorporated into stories where the nerve strike becomes a factor in their battles or their growth as ninjas.
Besides the main trio, characters like Kakashi could be involved. He might be the one who secretly has a sweet tooth and joins Naruto in trying out new ice cream flavors. Also, characters like Shikamaru, known for his laid - back nature, could be part of the story. He could be the one who comes up with clever ideas for ice cream - related events in the village. And of course, the local ice cream vendors in the Hidden Leaf Village would be important characters as well.
Naruto's friends like Shikamaru and Choji could also be part of 'Naruto Controls Heat' fanfictions. Shikamaru might use his intelligence to come up with strategies that incorporate Naruto's heat - controlling ability. Choji, on the other hand, could be a source of support and a test subject in some cases, for example, to see if Naruto can control the heat in a way that doesn't harm Choji when they are training together.
Well, Naruto himself is obviously the main character as it's about him as the Orange Hokage. His friends like Sasuke might also be important characters. Sasuke could be shown either supporting Naruto's new role or having some differences in opinion on how Naruto should lead as the Hokage.
Naruto himself is often involved in Naruto seals fanfic. Since he's the main character in the original series, writers like to explore his potential with seals further. Sasuke is also a popular choice. His Uchiha heritage and his own power - hungry nature make for interesting stories when combined with seal knowledge. Kakashi is another one. His Sharingan and his vast knowledge of jutsu could lead to some really creative seal - related scenarios. And of course, Jiraiya, as he was a master of many things including seals, and his relationship with Naruto can be further developed in fanfic with a focus on seals.
Kakashi is another character that frequently shows up. His experience and cool - headedness make him a great character for a reborn character to interact with. The reborn character could learn from Kakashi or even teach him something new, creating an engaging relationship within the fanfiction story.
Naruto himself is often involved. Since Gear 4 is a power - up concept, it makes sense for Naruto, with his never - give - up attitude and strong chakra reserves, to be the one to either use or face Gear 4. He could potentially learn to incorporate it into his Rasengan techniques.
Sasuke is often involved. His powerful chakra and skills make him a natural fit for stories involving barriers. He could be trying to break through a powerful barrier or using his Sharingan to analyze and then counter a barrier technique. Naruto is also popular. His large chakra reserves could be used to power up or break barriers in unique ways.