The main characters would be a Salvatore, which we can assume is from the Salvatore family in 'The Vampire Diaries'. Then there's Kol, who does the turning. There could also be side characters like Bonnie, who is a powerful witch in the series. She might try to interfere with Kol's plan of turning the Salvatore or help the Salvatore deal with the aftermath. Also, Caroline, another vampire in the show, could be involved, perhaps having a different reaction to the Salvatore being turned by Kol compared to others.
Most likely, a Salvatore brother, either Stefan or Damon, would be one of the main characters as they are central figures in the show. Kol, being the one who turns the Salvatore, is another key character. Additionally, other vampires or supernatural beings from the show might make appearances. For instance, Klaus, Kol's brother, could play a role. He might be involved in the situation either trying to stop Kol's plan or taking advantage of the new - turned Salvatore for his own purposes.
Well, it could be about a Salvatore (presumably from 'The Vampire Diaries' since the Salvatores are well - known in that show) being turned by Kol. Maybe Kol has some special reason for turning the Salvatore, like using him in a power play against other vampires. It might involve the Salvatore dealing with the new - found vampirism, different from how he was turned originally if he was already a vampire before, and his relationship with Kol, which could be one of begrudging loyalty or a desire for revenge.
The Salvatores are bound to be the central figures. However, depending on the nature of the fanfiction, it could also feature characters who are closely related to them in the original story, such as their friends or enemies. These secondary characters might play significant roles in shaping the plot around the Salvatores.
Katniss and Peeta would probably still be main characters. Their relationship from the original Hunger Games could be further explored in the context of this new marriage - based game. They might have to deal with new challenges to their relationship, like how to balance their individual goals with the expectations of this new game format.
The villains in the Naruto universe could also play a role. Maybe the one who turned Naruto into a fox was an enemy seeking revenge or trying to gain some advantage. Orochimaru, for example, could be behind it, hoping to use Naruto's new form for his own evil experiments. And then Naruto, in his fox form, would have to fight against Orochimaru's minions to protect himself and his friends.
Astrid is likely to be one of the main characters to interact with Hiccup. She might be initially very confused or even a bit jealous depending on how she perceives Hiccup's new form. Stoick, Hiccup's father, would also have significant interactions. He would probably be shocked at first but then try to support his child in this strange situation. And of course, Toothless. Their bond is so strong that Toothless would surely be involved, perhaps trying to understand what has happened to his rider.
Sasuke would definitely be one of the main characters to interact with Naruto. Their relationship has always been complex, and with Naruto as a girl, it could become even more so. Sakura would also interact a lot. She might be both jealous and intrigued by Naruto's new form. Kakashi too, as Naruto's mentor, would have to adjust to this change and guide 'her' in a different way perhaps.
Another character that could be important is Elijah. He is often the voice of reason among the Originals. He might try to guide Kol in his relationship with Elena, or he could be against it if he thinks it will bring trouble to their family. So in this fanfiction, he could be a key figure in the development of the Kol - Elena relationship.
The main characters are clearly Kol and Bonnie. Kol is the one doing the kidnapping, and Bonnie is the victim of this action.
Obviously, Harry and Ron would be highly involved. They are Hermione's closest friends. Harry would likely be the one leading the effort to find a solution, given his heroic nature. Ron, on the other hand, would probably be more involved in the day - to - day care of baby Hermione, with his big, caring heart.
Bella, who is known from the Twilight series, and Kol, from The Vampire Diaries. In this fanfiction, their friendship is the central focus. So, it's all about how these two very different characters interact and build a bond. Bella with her human - turned - vampire - ish experiences and Kol with his long - standing vampire existence and all the drama that comes with his family and the vampire world.