Obviously, Harry Potter himself. There would also likely be Viktor Krum, who is from Durmstrang. Krum could be either a friend or a rival to Harry. Igor Karkaroff, the headmaster of Durmstrang, would be another important character. And there could be new students created for the fanfic, like a Durmstrang student who becomes Harry's guide in the new school.
In this fanfic, Harry is the central character. But we might also see some of the Durmstrang alumni who come back to visit. They could bring with them old stories and secrets of the school. There could be a mysterious student who has some special connection to Harry's journey at Durmstrang. And the house - elves at Durmstrang could be different from those at Hogwarts, and they could be part of the story too.
Well, one possible plot could be that Harry goes to Durmstrang to learn different kinds of magic not taught at Hogwarts. Maybe he discovers a new form of defensive magic there. He could also make new friends who have different views on magic compared to his Hogwarts pals. And perhaps he gets involved in a mystery that is unique to Durmstrang, like an ancient curse on the school or a hidden artifact.
There could be some original characters created by the fanfiction authors. These could be Harry's new classmates or friends at Durmstrang. They might have their own unique magical skills and personalities, and through their interactions with Harry, they can help develop the story further. For example, a new friend could introduce Harry to a secret part of the Durmstrang grounds or a special magical technique that's unique to the school.
Obviously, Harry Potter himself. There could also be some Beautox - natives, like a wizard or witch who is an expert in Beautox magic. Maybe Hermione would somehow find a way to follow Harry and she'd be there too, trying to figure out the new magic system.
Viktor Krum could be a major character. Since he is from Durmstrang, he might play a role like a mentor or a rival to Harry. Another character could be the headmaster of Durmstrang. He would be important as he sets the rules and tone for the school.
Potential new characters might include a young American wizard called Tommy. He's a bit of a troublemaker but has a good heart. There could also be an old and wise American wizard professor, Professor Anderson, who teaches Harry about the history of American magic. And then there's a female wizard, Sophia, who is very interested in the British magic system and befriends Harry to learn more.
Well, in this fanfic, perhaps Harry struggles with the more strict and traditional rules of Durmstrang. He could be constantly compared to Viktor Krum, who might be a year or two above him. This could create some tension and rivalry. Also, he might discover some secrets about Durmstrang's past that are linked to the Dark Arts, and he has to decide whether to keep them or expose them.
In a fanfic where Harry goes to Durmstrang in his first year, he might face a very different educational environment. Durmstrang focuses more on the Dark Arts in some aspects compared to Hogwarts. Harry could be exposed to different types of magic and different cultural views within the wizarding world. He might also make new friends and enemies. For example, he could encounter students who have a more aggressive approach to magic, which would contrast with his more morally - centered views from his upbringing with the Dursleys and his natural inclination towards good. This could lead to many conflicts and also opportunities for growth as he tries to adapt to this new place while still holding onto his own values.
Obviously, Harry would be one of the main characters. There could also be local Harlem residents like a street - smart kid who shows Harry around. A jazz singer could be another character, perhaps someone with a mysterious past that Harry gets involved with.
Well, one possibility is that Harry could face new magical challenges there. Durmstrang is known for its different approach to magic compared to Hogwarts. Maybe he'll learn some unique spells or face dark magic threats that are more common in Durmstrang's curriculum.
One possible plotline could be Harry making new friends at Durmstrang. He might meet students with different magical abilities and cultures compared to Hogwarts. Another could be Harry facing new challenges in the Durmstrang curriculum, which might be more combat - oriented or have different magical theories.