Well, Harry is obviously one of the main characters. Since it's a fanfiction about him going to the Hellmouth. There might also be characters from the Buffyverse, like Buffy herself. If the story is set in a way that combines the two universes, she could play a significant role in helping Harry navigate the Hellmouth and its dangers.
One possible plotline could be Harry's initial shock and confusion upon arriving at the Hellmouth. He might have to quickly adapt to the new and dangerous environment filled with demons and other supernatural threats.
Well, obviously Harry is one of the main characters. He brings his own backstory and skills from the original Harry Potter series. There might also be new characters created specifically for this fanfiction, like a wise old teacher at Stonewall who helps Harry adjust to the new place.
Harry is the central figure. In addition to the well - known Camelot characters like Arthur and Merlin, Guinevere can also be a main character in some fanfictions. She could play a role in Harry's integration into Camelot society. There might also be some original characters created by the fanfiction author, like a young apprentice in Camelot who becomes Harry's friend and helps him understand the ways of Camelot. Another often - seen character is Morgan le Fay. She could be an antagonist to Harry, seeing his presence as a disruption to her plans in Camelot.
There may be a group of students who are outcasts or have special powers that are not fully understood. Harry might befriend them, and they could all be main characters in the sense that they are central to the story's plot. They could be working together to uncover secrets about the school, themselves, or the magical world in general.
Obviously, Hadrian is one of the main characters. He is the version of Harry Potter with a different name. Then, we might still see characters like Hermione and Ron. They would interact with Hadrian in different ways compared to how they interacted with Harry. Their relationships could be more complex or different in nature.
Obviously, Harry is one of the main characters. There could also be some original characters created specifically for the Salem setting, like a local witch who befriends Harry. And sometimes Hermione or Ron might make an appearance, especially if the story involves some sort of connection between Hogwarts and Salem.
There might be a new mentor figure, perhaps a wise old professor at the university who takes Harry under his or her wing. This character could help Harry navigate the new and more complex magical education system.
Well, Harry is obviously one of the main characters. He's the one who is going to Harvard. There might also be some original characters created for the fanfiction. These could be Harry's classmates at Harvard, like a brilliant but eccentric roommate who helps Harry understand the ropes of the university.
Madame Maxime, the headmistress of Beauxbatons, could play an important role. She could be a mentor to Harry, guiding him in his new magical studies at Beauxbatons. She might also be involved in some sort of conflict or mystery that Harry has to help her solve, which could involve the relationship between Beauxbatons and other wizarding schools or some ancient magic within the school.
Well, obviously Harry Potter himself is the central character. Hermione and Ron are almost always involved too. They would be the ones trying to figure out what's wrong with Harry and how to fix him. Dumbledore might also play a major role, as he often has deep knowledge about magic and could potentially help Harry regain his sanity.