His family members could also be important characters. Some family members might be accepting and loving, while others could be struggling to come to terms with Harry's flamboyant gay identity. Their interactions with Harry would add depth to the story, showing the different reactions within a family unit and how Harry copes with them.
One characteristic could be that it might feature Harry with a very open and expressive gay identity. His actions, dialogues, and relationships in the fanfic could be written in a way that emphasizes his flamboyance. For example, his clothing style might be described as very bold and unique, and he could be very confident in expressing his feelings towards other male characters.
Well, Ron might be initially terrified of Slenderman. But when his friends are in danger, he would step up. The Weasley twins could try to play pranks on Slenderman, not fully realizing the danger at first. Dumbledore, on the other hand, would be very cautious. He might observe Slenderman from a distance, trying to understand his nature before taking any action. In a 'Harry Potter and Slenderman fanfic', these interactions would create a lot of interesting scenarios.
A potential character could be a reclusive old wizard who lives on the outskirts of the wizarding world. This wizard might have his own reasons for living in seclusion, but when he sees Harry's loneliness, he takes him under his wing. Another character could be a young, orphaned witch who is also trying to find her place in the post - war wizarding world and she crosses paths with Harry.
Well, in a Harry Potter fanfic involving Mummy Holmes, perhaps Mummy Holmes could be a mysterious figure at Hogwarts. She might use her detective - like skills to solve some of the strange mysteries that occur within the school. For example, if there are some strange disappearances or unexplained magical happenings, she could be the one to piece together the clues.
There could be other Hogwarts students. For example, Neville could be there, exploring the different plants and herbs that are associated with Beltane. Luna Lovegood might also make an appearance, with her unique perspective on the magical aspects of the festival. And perhaps some local wizards and witches from the area where the Beltane celebration is taking place.
There could be a new wizard student from a far - off land. This student might bring with them unique magical traditions and powers that Harry and his friends have never seen before.
There are many potential characters. The teachers at Forks High School for sure. Harry could have interesting conversations with them. Also, if there are any other supernatural beings in the Forks universe in this fanfiction, like werewolves, he could interact with them. And of course, the students who are into different clubs and activities at the school. He might bond with the science - loving students or those on the school newspaper team, sharing his own experiences from Hogwarts in a veiled way.
Definitely Sam and Dean Winchester. They would be like his surrogate brothers or mentors. Then there's Castiel, the angel. He could have some interesting interactions with Harry, perhaps being intrigued by his magic. Bobby Singer could also be there, guiding Harry in the ways of hunting.
One possibility could be Dumbledore, but in a different way than in the original. Maybe he has a more urgent reason this time. Another could be a powerful but reclusive wizard who has been observing Harry from afar and decides it's time to take matters into his own hands.
His professors could also be in it. Professor Dumbledore might make an appearance and give Harry some wise Christmas advice. And Professor McGonagall could be there to ensure that all the Christmas celebrations are in line with Hogwarts' rules. Also, there could be some new characters, like a mysterious wizard who arrives at Hogwarts during Christmas and has some connection to Harry Greengrass.