Obviously, Harry Potter himself. His fame and the respect he has earned from the wizarding world can be a great asset in building an empire. He has a large network of friends and allies, like Hermione and Ron, who can provide different skillsets, Hermione with her intelligence and knowledge, and Ron with his loyalty and understanding of the wizarding community's day - to - day life.
Neville Longbottom could also be very important. He has proven himself to be a strong and capable wizard. His knowledge of Herbology could be used in building an empire related to magical plants, perhaps creating a business around rare and useful plants, or using them for medicinal purposes in a new kind of wizarding hospital he could help build.
Luna Lovegood might play a crucial role too. Her unique perspective and knowledge of the wizarding world's more esoteric elements could be valuable. For example, in an empire that focuses on magical research or exploration, Luna could be the one to introduce new and strange magical concepts or locations that others haven't considered.
Another plot could involve Harry building a magical business empire. He might start a potion - making business that uses ethical and sustainable methods of gathering ingredients. With Hermione's help in business management and Ron's knowledge of the wizarding market, they could grow the business into a large corporation, with branches in different magical communities, also providing jobs for underprivileged wizards and witches.
Most likely, Harry, Hermione, and Ron would be involved in some way. However, the fanfiction could introduce a whole new set of characters who are the driving force behind the empire's rise. These could be characters from different houses at Hogwarts who have united for a common cause, or perhaps characters from outside the school entirely. They could have unique magical abilities or knowledge that gives them the power to build an empire. And there may be antagonists among them as well, those who seek power for their own selfish reasons rather than the good of the wizarding community.
Harry is of course central. But you could introduce a character who is the keeper of the Potter family secrets. This person might be an old and reclusive wizard who lives in an ancient family manor. Also, a young Potter cousin could be important. They might be initially jealous of Harry's fame but then come to realize the importance of the family heritage and work together with Harry to uncover more about it.
In 'harry becomes lord potter at 7 fanfiction', Harry is the main character, but there could be other important characters too. Maybe there are some members of the Potter family's old allies who come forward to help Harry. For example, the Longbottoms could be important as they have a long - standing relationship with the Potters. And then there might be some antagonists, like the Malfoys, who could be envious or try to undermine Harry because of his new title.
Obviously, Harry Potter himself is a central character. Since it's about his bloodline, he will be the one through whom the exploration of the bloodline occurs. Then there might be a new character who is a long - lost relative from the bloodline. This character could be an old wizard or witch with a wealth of knowledge about the family's past and the secrets within the bloodline.
In Harry Potter Voldemort family fanfiction, an important character can be Voldemort's grandfather, Marvolo Gaunt. His actions and the way he treated his family could have far - reaching effects on Voldemort's upbringing and his view of magic. Another character could be a long - lost sister or brother of Voldemort. This character might have been hidden away for some reason and now resurfaces with the intention of either following in Voldemort's footsteps or stopping him. Also, the mothers of Voldemort's followers could be important. They might have some connection to Voldemort's family and play a role in the loyalty of their sons and daughters to Voldemort.
Obviously, Harry Potter himself would be a very important character. Since it's a fanfiction based on the Harry Potter series, he would likely be the central figure driving the story forward. Hermione and Ron might also be important as they are Harry's closest friends and usually accompany him in his adventures.
In addition to Harry, Dumbledore could play a crucial role. He might already know about Harry's connection to Oberon and be guiding him in secret. There could also be a new villain, perhaps a dark fae who wants to stop Harry from fulfilling his destiny related to his Oberon descent. And of course, Harry's friends like Hermione and Ron could be involved, helping him figure out this new part of his identity.
Obviously, Harry Potter is the central character. But in this fanfiction, 'life' could be personified as an important character too. It might be some sort of spirit or entity that has a big influence on Harry's upbringing.
Obviously, Harry Potter himself is a crucial character as he is the master of the elements. His friends like Ron and Hermione are also important as they support him in his journey.