Obviously, Harry Potter himself is a main character. Since he is becoming Lord Potter, he is at the center of the story. Hermione and Ron are likely to be important characters as well, as they are Harry's closest friends and will surely be involved in his new journey as Lord Potter.
Obviously, Harry Potter is the main character. His journey as he becomes Lord Potter and how it changes his life is the central focus.
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.
Perhaps Hermione could be one of the main characters. Given her intelligence and knowledge of magic, she might be the one to figure out how to deal with the strange 'Lord of the Wind' magic that has entered the wizarding world. She could be researching ancient spells and texts to find a solution.
His old friends, especially Hermione and Ron. They have always been on the side of good and would not stand for Harry becoming a dark lord. They would try to stop him and bring him back to the light, so they would be the main antagonists from Harry's new perspective.
Ron is also there. He could be Harry's right - hand man in some adventures related to his lordship. For example, when Harry has to deal with some dark wizards threatening his lands, Ron might be by his side, using his Weasley - family - taught magic skills.
It could be Harry Potter himself, of course. He might be on a mission to either free someone wrongly imprisoned in Caer Azkaban or to stop a new dark threat emerging from there. Hermione could also be a main character, using her intelligence to figure out the mysteries of Caer Azkaban.
Hermione would likely be one of the main characters. She's always been Harry's intelligent and resourceful friend. In this fanfiction, she could use her vast knowledge of magic to help Harry on his journey to becoming a powerful lord. For instance, she might research ancient texts to find spells that can enhance Harry's power.
Hermione would surely be one of the main characters interacting with Harry. She might try to bring him back from the dark side, constantly arguing with him about his choices and trying to remind him of their old friendship and the good they used to fight for.
Obviously, Harry would be one of the main characters. Since it's about him becoming death, he's at the center of it. There might also be his friends like Hermione and Ron. They could be reacting to Harry's transformation, either trying to help him or being afraid of the change in him.
The main character is Harry, of course. But in addition to Ron and Hermione, other characters could be significant. For example, Voldemort or his followers might sense Harry's new power and become interested in using it for their own evil purposes. So they could be antagonists in the fanfic. Also, some new characters might be introduced, perhaps a wizard or witch who has some special knowledge about the Obscurus and tries to guide Harry on his journey, either for good or bad motives.