The main characters would be Hermione, and the Lestrange brothers. Hermione is likely to be the moral compass in the story, constantly making decisions based on what is right. The Lestrange brothers, on the other hand, might be more complex. One of them could be more open to change and redemption, while the other could be more set in his dark ways, which would create interesting character dynamics throughout the fanfiction.
The main characters would be Hermione, the victim of the kidnapping. The Lestrange brothers are the antagonists. Neville Longbottom could also be involved. He might have some unexpected role, like using his newfound courage and knowledge of plants to help in the rescue mission.
Obviously, Hermione and Ron's brothers, which include Bill, Charlie, Percy, Fred, George, and Ron himself could also be involved as a connection. Hermione is the smart and studious witch, and Ron's brothers each have their own distinct personalities that would create interesting interactions with her.
Perhaps the plot is centered around Hermione trying to reform the Lestrange brothers. She might see some good in them that others don't, and attempts to bring them over to the side of good. This could lead to all kinds of situations, like her having to protect them from the wrath of other wizards who don't trust them.
The main characters would be Hermione, Bellatrix Lestrange, and maybe Rodolphus Lestrange. Hermione is the hero of the story, and Bellatrix is a very well - known and crazy Death Eater. Rodolphus could be there to add more of the dark family's presence and power dynamics.
Hermione is known for her strong sense of justice and intelligence. The Lestrange brothers, coming from a dark pure - blood family, might have a more cavalier attitude towards the law and a different view on power. Hermione would clash with them when it comes to ethical use of magic. For example, she would never condone their use of dark spells for personal gain. Her studious nature would also contrast with their more impulsive and power - hungry ways.
The main characters from Young Justice like Robin (Dick Grayson), Aqualad, and Superboy are likely to be there. And of course, the Robin Brothers which could include different versions of Robin such as Jason Todd and Tim Drake.
Harry Potter is a very likely character to come to Hermione's rescue. He and Hermione are best friends, and he has a strong sense of loyalty. He would surely do whatever it takes to save her. Ron Weasley is also a candidate. He cares deeply about Hermione and would be extremely worried. He would join the rescue mission without hesitation.
Obviously, Harry Potter is one of the main characters. Since it's about his betrothal, he'll be central to the story. The Lestrange he's betrothed to will also be a major character, whether it's an existing character like Bellatrix's younger relative or an original character created for the fanfiction.
To develop Hermione's character in this fanfiction, we can explore her moral compass in greater depth. When interacting with the Lestrange brothers, she has to constantly make decisions about whether to trust them or not. This could lead to internal struggles that show different sides of her. As for the brothers, they could be developed by showing their vulnerability. Perhaps they have nightmares about their past misdeeds and Hermione helps them face these demons. This would make them more complex characters rather than just being the 'bad guys' from the original story.
Obviously, Hermione is one of the main characters. And from the Volturi side, Aro, Caius, and Marcus are likely to be important. They are the leaders of the Volturi and would surely be involved in any encounter with Hermione.