The main character is Harry in her new female self. Luna Lovegood could be a significant character in this fanfic. Luna has a unique perspective on the wizarding world, and she could be very accepting of Harry's transformation. Additionally, Draco Malfoy could be in the story. His relationship with Harry, which was already complex when Harry was a boy, could become even more so with Harry as a girl.
Obviously, Harry would be the main character, just in a female form. Hermione would also be a very important character. She could be the one to help Harry understand and navigate the new experiences of being a girl in the wizarding world. Ron might also be there, and his reactions to Harry's transformation could add some interesting dynamics to the story.
She might be an old friend of Harry's from his childhood in the Muggle world that he didn't know was a witch. She had been suppressing her magic for a long time and fainted when it finally burst out uncontrollably. Harry wakes her up and helps her understand and control her new - found powers.
Obviously, Harry and James are the main characters. But there could also be Lily, Harry's mother, who would play an important role in his upbringing. Sirius Black might also be around a lot, as he was James's best friend.
Well, perhaps a plot where Harry wakes up as a girl and discovers new magical abilities that are more commonly associated with female witches. She might then have to learn how to control and use these abilities while also coming to terms with her changed physical form. It could also involve a romantic sub - plot where characters who previously saw Harry as a boy now have different feelings towards her as a girl.
Hermione would likely be a key friend. She might be initially very confused and try to analyze the situation rationally. She could be worried about how this will affect Harry and his future, and might try to find a way to reverse the situation if it seems harmful to Harry.
Harry Potter would probably be one of the main characters. He's the central figure in the original series, so it's likely he'd be involved in this fanfic in some capacity, perhaps as the hitman or someone related to the hitman - style plot.
Obviously, Harry Potter himself would be one of the main characters. He's the hero of the original series and his story would likely continue in this fanfic.
Harry Potter himself could be a main character. He has a history of standing up against injustice, so it's likely he'd be involved in a revolt. Hermione would also be a key figure. Her intelligence and knowledge of the wizarding world's laws would be invaluable in planning and leading a revolt. Ron, with his loyalty and courage, would be right there with them.
Obviously, Harry Potter himself would be a main character. Then, there would probably be some important goblin characters who raise him. For example, a wise old goblin who acts as his mentor, teaching him everything from magic to the ways of the goblin society.
Most likely, Harry Potter, Hermione Granger, and Ron Weasley will still be the main characters. After all, they are the central figures in the original series. But there could also be new characters introduced who are either part of their wealthy new circle or those who are affected by their millionaire status.
Obviously, Harry would be one of the main characters as he is the one being captured. And then there would probably be characters from Abstergo, though we don't know exactly who without more context of the fanfic.