Dumbledore could play an important role too. Even though he's passed away in the original series, in fanfiction, his spirit or his past actions could be related to Harry's inheritance. He might have left some clues or instructions for Harry to find out about his true inheritance.
There might also be some new or minor characters from the wizarding world that are introduced specifically for this fanfiction. For instance, an old healer who has a unique method of restoring eyesight that no one else knows about. This character could play a crucial role in Harry being able to see again.
Hermione would most likely be involved. She's Harry's best friend and would be eager to help him understand and manage his inheritance. She could use her vast knowledge of magic and research skills to uncover the secrets behind it.
In this kind of fanfiction, one possible plot could be that Harry discovers he has an inheritance of powerful magic from an ancient wizarding family that was long forgotten. Maybe this inheritance gives him unique powers like the ability to control certain elements more effectively than other wizards.
A previously unknown family member could be an important character. For example, an older cousin or an aunt who has been in hiding due to some dark secret related to the family's heritage. They could appear and help Harry navigate the complex world of his family's past, teaching him things that his parents were unable to before their untimely deaths.
One main character could be Griphook. He already has a complex relationship with Harry Potter in the original series. In a goblin rebellion fanfiction, he could be a key figure leading the goblin revolt, using his knowledge of the wizarding world and his own skills to strategize against the wizards. Another character could be a young goblin apprentice who is caught between his loyalty to his own kind and his admiration for Harry Potter and the wizarding world.
Often, Harry Potter himself might be involved, either as a friend or observer of someone with Veela inheritance. His unique perspective as the Boy Who Lived could add an interesting dynamic to the story.
Ron Weasley also plays an important role. His loyalty to Harry and his own knowledge of the wizarding world, especially the Weasley family's traditions, could provide valuable insights. He might be the one to support Harry emotionally during the difficult process of dealing with the revelations of his hidden inheritance, and also offer practical help in certain situations.
Often, we see Harry Potter himself involved. Since he has a natural inclination towards adventure and facing the unknown, it makes sense for him to be part of a dragon inheritance storyline. Hermione might also be involved as she is always eager to learn about new forms of magic. Ron could be there too, providing his loyal friendship and his own brand of wizarding skills.
There are also original characters that authors create for these fanfictions. These original characters can be those who actually possess the Lamia inheritance. They can bring new storylines and perspectives to the fanfiction. For instance, an original character with Lamia inheritance might come to Hogwarts as a transfer student, and their presence stirs up a whole new set of adventures and relationships. Their different abilities and the mystery surrounding their inheritance can drive the plot forward, while also interacting with the well - known Harry Potter characters in various ways.
Harry Potter himself is often a main character in these fanfictions. His story could be re - imagined with the addition of demon inheritance. Hermione might also be involved, perhaps she tries to study and understand the demon inheritance. And of course, there could be new original characters created specifically for the fanfiction who have demon inheritance.