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.
There might be an ancient evil entity that has been trapped within the university grounds for centuries. When Harry arrives, it senses his power and tries to use him to break free. This entity could manipulate other students and staff to achieve its goal, making it a very dangerous and complex antagonist.
A jealous classmate could be the main antagonist. This person might be envious of Harry's popularity or the strange things that seem to always work out for him. They could start spreading rumors or trying to trip him up in his studies.
Another plot might involve Harry facing a new kind of dark magic threat at the university. This could be a dark magic that is specific to the academic environment, like a curse on a certain magical textbook that starts spreading chaos among the students. He has to use his skills and knowledge gained at Hogwarts and develop new ones to deal with it.
Well, one interesting plot could be Harry making new and unique friends at the magical university. Maybe he meets a group of students from different magical backgrounds and they form a study group that gets into all sorts of adventures while trying to master new spells.
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.
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.
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.