The main character is Harry. For the police, there could be a gruff, older officer who is initially very skeptical of Harry but slowly starts to believe in the extraordinary things around him. Then there are the villains from the wizarding world, like Death Eaters, who might be hunting Harry while he's in the custody of the police. This creates a lot of tension as the police are caught in the middle of a magical war without really understanding what's going on.
Obviously, Harry Potter himself would be a main character. And the police officers who find him. There could also be some of his Hogwarts friends like Hermione and Ron who come to his rescue later in the story.
Well, it could be that Harry is found by the police in a Muggle area while on the run from some dark wizards. Maybe he's using magic to defend himself and the police are shocked to see it.
Often, you'll find the slayer as a main character, of course. They bring their own set of skills and a different perspective to the wizarding world. Harry Potter himself might also be a main character, as the two could interact and collaborate in the fight against evil. Hermione would also be a likely character, her intelligence and knowledge of magic could be combined with the slayer's brute force and unique abilities.
The midwife herself is often a main character. She could be an original character created by the fanfiction writer, with her own backstory and magical abilities related to midwifery.
Often, Harry Potter himself can be a main character. Picture him learning programming skills from a mysterious Muggle - born wizard and using it to his advantage against Voldemort. Another common character could be Hermione. Since she is so intelligent and loves to learn new things, it's easy to imagine her delving into programming in a fanfiction story.
Often, you'll find minor characters from the original series taking on the role of smugglers. For example, some of the less - than - upstanding Hogwarts students who might have been sorted into Slytherin and have a taste for adventure and illegal activities. Another common character could be a disgruntled wizard who has fallen on hard times and turns to smuggling to make ends meet.
Well, in a lot of 'Harry Potter Succubus Inheritance Fanfiction', Draco Malfoy can be a main character. The concept of succubus inheritance can give a new dimension to his already complex character. He might be in a situation where he has to deal with the new powers or the person who has the succubus inheritance. Additionally, Dumbledore could be a significant character. His wisdom would be put to use in guiding the character with the inheritance, or in dealing with the potential chaos that it could bring to the wizarding world.
There could be an original character created by the fanfiction author. This character might be a new werewolf in the pack, facing all sorts of challenges like coming to terms with their new identity and dealing with the discrimination from other wizards.
Sometimes, characters from the Forbidden Forest might play important roles. Centaurs, for instance, with their deep knowledge of magic and nature. They could either be allies or foes to the dragon master. And then there are the dragon handlers at Hogwarts, like Hagrid. He might be involved in helping the main character on their journey to becoming a true dragon master, teaching them the basics about dragon care and behavior.
Harry Potter himself is often still a main character, but in a different light. Maybe as a sidekick or someone who is learning from the 'ultimate being'.
The demi - wizard themselves is of course a main character. They usually have some sort of special backstory that sets them apart. Then there are often appearances by the well - known characters from the original Harry Potter series like Harry, Hermione, and Ron. They might be friends or mentors to the demi - wizard.