Typically, the main character would be the heir of Avalon. They are often a new character inserted into the Harry Potter universe. But of course, Harry Potter, Hermione, and Ron usually also play important roles as they interact with the heir of Avalon, either as friends, allies, or sometimes even as rivals.
In 'Harry Potter heir of avalon fanfiction', the heir of Avalon is the central figure. They are likely to be a unique character with their own backstory and personality. Neville Longbottom could also be a significant character. He might befriend the heir and together they could discover new aspects of magic. And then there are the professors at Hogwarts like McGonagall. They could be involved in helping the heir adjust to Hogwarts life while also dealing with the implications of being the heir of Avalon.
Well, Harry Potter is obviously one of the main characters. Since it's a fanfiction related to him being the 'Chosen of Avalon', he would be central to the story.
Obviously, Harry Potter would be one of the main characters. Since it's related to the Prince of Avalon, there might be characters from Arthurian legends like Merlin who could play a significant role. Maybe Hermione and Ron would also be involved, supporting Harry in his new role as the Prince of Avalon.
Hermione Granger is often a popular character. Her thirst for knowledge could lead her to be interested in the mysteries of Avalon, and fanfiction might show her exploring its libraries or ancient magic.
Most likely Harry Potter would be one of the main characters. Since it's a crossover with the Potter universe.
One interesting plotline could be the exploration of the main character's newfound heritage as the heir of Avalon. This might involve them discovering ancient magic and secrets related to Avalon. Another could be their interactions with existing Harry Potter characters in a new light, like how they might change the dynamics within Hogwarts or in the fight against Voldemort.
Obviously, Harry Potter would be one of the main characters. Since it's about him being the heir of Windsor, his character would be central to the story. Hermione and Ron would likely also be important characters as they are Harry's closest friends. There might also be new characters introduced who are related to the Windsor side of the story, perhaps some sort of magical relatives or advisors from the Windsor heritage in the wizarding world.
Obviously, Harry Potter is a main character as the heir of Excalibur. Hermione Granger would also likely be involved. She is always by Harry's side in the original series, helping him with research and providing intelligent solutions. So in this fanfiction, she might be the one to help Harry figure out the implications of being the heir.
Hermione and Ron could also be main characters. They are Harry's best friends in the original series and it's likely they would be involved in the story. Hermione with her vast knowledge of magic could help research about the Anubis heritage, while Ron could provide support and his unique brand of humor. Their presence would add familiarity and also a sense of friendship and teamwork to the fanfiction.
In some versions, there could be a love interest for the heir of God. This character could add another layer of complexity to the story, as the heir has to balance their relationship with their quest for knowledge about their identity and the use of their powers.
I'm sorry, without actually reading it, it's hard to say for sure. But it might include characters related to the Black family like Sirius Black or Narcissa Malfoy, and of course, the new 'black heir' character who would be central to the story.