There could also be antagonists in the story. They might be characters who oppose the inner circle's goals or Hermione's presence in it. Their actions and interactions with the main characters would drive the conflict and plot forward.
Perhaps a plotline where Hermione has to navigate the power dynamics within the inner circle. She might have to prove herself and gain respect among the members, which could lead to some tense and exciting moments. For example, there could be a situation where she disagrees with the traditional ways of the inner circle and tries to introduce new ideas.
Hermione would likely try to outwit them. She has a sharp mind. She might use her knowledge of magic, both dark and light, to find ways to counter the Death Eaters. For example, she could use spells that they wouldn't expect or find loopholes in their dark magic.
She could be a target. The Death Eater Inner Circle is known for their dark magic and evil deeds. Hermione, being a smart and powerful witch, might be seen as a threat to their plans. So they could try to capture or eliminate her.
Since it's a Twilight fanfiction, we can expect the main characters to be those we know from the original story. So, Bella Swan, who is at the center of the love triangle in Twilight, might be a main character. Edward Cullen, the vampire she falls in love with, and Jacob Black, the werewolf who also has feelings for her, are also very likely to be main characters in this fanfiction. There could also be other characters like the Cullen family members who might play important roles depending on the nature of the 'circle of lies' in the story.
The central characters are the wizards of the Black Circle. They are the focus of the story. However, there could be side characters such as magical creatures that are either allied with them or against them. Also, there could be mentors or former members of the Black Circle who play important roles. And don't forget about the potential love interests or family members of the wizards that could be introduced to add more depth to the story.
Another character could be a new teacher or a visiting wizard. This person might recognize Hermione's potential even more than the others and offer to mentor her. They could introduce her to new areas of magic and help her develop her skills further.
Another possible main character could be Draco Malfoy. Given his Slytherin background and the connection between Slytherin and Parselmouths, there could be some interesting interactions between him and Hermione. Maybe they start to understand each other better through their shared connection to Parseltongue.
Well, Harry and Ron would most likely be main characters. They are Hermione's closest friends in the Harry Potter universe, and in this fanfiction, they would probably play important roles in supporting Hermione through her maledictus situation. Maybe Harry would use his courage and Gryffindor spirit to stand by her side no matter what, and Ron would provide some comic relief while also being a loyal friend.
In addition to Hermione and the Marauders, there could be other characters from the Harry Potter universe that play important roles in the fanfiction. For instance, Dumbledore might make an appearance, guiding Hermione in her interactions with the Marauders. Or other Hogwarts professors like McGonagall could be involved, adding more depth to the story.
Hermione is the central figure who drives much of the action. Her interactions with the Malfoys are what the fanfiction is often centered around. The Malfoys, with their Slytherin traits, contrast with Hermione in many ways. Their different beliefs and values create the basis for a lot of the drama and character development. Whether it's Draco's initial hostility towards Hermione or Lucius' attempts to maintain the family's status in the face of Hermione's presence, these characters are essential to the story.