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.
Often, the main characters involved are Naruto and his friends from Team 7. However, other characters from the Naruto universe can also make appearances. For instance, Jiraiya could be a character in a Naruto ice cream fanfiction. He might use his travels to bring back unique ice cream ingredients from different lands. And then there are the younger characters like Konohamaru, who could look up to Naruto and want to be part of his ice cream - loving crew. All these characters together can create a rich and fun story around ice cream in the Naruto world.
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'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.
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.
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.
The main character is Percy, of course. But in addition to his close friends, some fanfictions might also involve the gods. For instance, Poseidon, Percy's father, could make an appearance. He might be worried about his son's condition and use his godly powers to try and save Percy. Or Chiron, the centaur trainer at Camp Half - Blood, would also be a key figure. He has a vast knowledge of demigod health and history, and would be guiding the others in their efforts to deal with Percy's collapse.
Obviously, Tony Stark himself is the central character as it's about his collapse. But other key characters usually include Pepper Potts, his love interest. She often plays a role in either trying to prevent the collapse or dealing with the aftermath. For example, in some fanfictions, she's the one who discovers him first.
Princess Bubblegum is also a common character. Given her scientific mind and love for creating things, she could be involved in fanfictions about cherry cream soda. For example, she could be researching the unique properties of the soda or using it in some of her experiments in her candy kingdom.
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.
Obviously, Harry Potter himself is a main character in most of these fanfictions. He's usually the one who has some sort of encounter with the Ice Phoenix.
Hermione Granger could also be a key figure. She might be researching in the library about the ancient magic of fire and ice, trying to figure out how it can be used to solve a mystery or defeat an evil. Maybe she discovers a hidden book that has the secrets of this magic and has to share it with Harry and Ron.