Luna Lovegood can be a popular choice in such fanfictions. Her unique perspective on the wizarding world might lead her to make some interesting connections between magic and science. For example, she could be the one to discover a new species and study it from both a magical and scientific point of view. Also, Professor Snape might be included as his expertise in potions could be related to a more scientific study of ingredients and their magical properties.
Harry Potter himself is often a popular character in such fanfiction. Writers like to explore how he would interact with mutant wizards, maybe he would befriend them and help them fight against discrimination. Hermione is also popular as she could be intrigued by the new forms of magic mutant wizards possess and study them.
Harry Potter himself is still extremely popular in fanfiction. Writers often explore different versions of him, like what if he had made different choices. Hermione Granger is also a favorite as her intelligence and strong - willed nature can be used in many different storylines. Draco Malfoy is another popular character. His complex family situation and his initial enmity with Harry make him a great character to explore redemption arcs or alternative storylines in fanfiction.
One popular original character could be a new student at Hogwarts who has a unique magical ability. For example, a character who can control time in a very limited way, just for a few seconds, but it's enough to change the outcome of some situations. Another could be a mysterious wizard who lives in the Forbidden Forest and has his own set of rules and magic that are different from what the students learn at Hogwarts.
One popular type of original character is the out - of - place Slytherin. This character might not fit the typical Slytherin stereotype. They could be kind - hearted but in Slytherin because of some other trait, like being very ambitious in a non - traditional way. Also, there are characters who are half - bloods with a really interesting mix of magical heritages that bring new elements to the fanfiction. For instance, a character who has a wizard father and a veela mother, which gives them some special abilities.
Another wizard who might be the richest in fanfiction could be the goblin Griphook. In the original series, goblins are in charge of the wizarding bank, and they are known to be shrewd with money. In fanfiction, Griphook could be given a more central role where he amasses an even greater fortune through various means, like uncovering long - lost treasures or making very smart financial deals with wizards.
It's possible that some of the minor characters from the original Harry Potter series could take on more prominent roles. For example, Neville Longbottom could be a key character. He has shown great courage in the series, and in this fanfiction, he might be one of the few who can stand up to the black wizard. Also, Professor Snape's backstory and his relationship with the black wizard could be further explored, making him an important part of the story as well.
Obviously, Harry Potter himself could be a main character. He could interact with the Royal Wizards and learn from them. Hermione and Ron could also be involved, with Hermione being especially interested in the knowledge of the Royal Wizards.
In a lot of these fanfictions, a dark version of Harry himself is very interesting. He breaks away from the traditional heroic mold and becomes a complex character dealing with power, morality, and his own identity. Another interesting character can be Draco Malfoy, who sometimes forms an unlikely alliance with dark Harry, adding more depth to their relationship.
It's likely not very popular. While there are many creative fanfictions out there, this one seems a bit too niche. Most Harry Potter fanfiction readers are interested in things like the Hogwarts years of the characters, their friendships, and the battles against Voldemort. This idea of Harry as the queen's wizard doesn't really fit into those more popular themes, so it's probably not widely read.
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.