The main character is the woman who is evolving into a true villainess. There may be a group of noble characters who are against her new ways. Her parents or guardians could be important characters too, their reactions to her change could be a significant part of the story. And there could be a mysterious character, maybe a wizard or a seer, who has some sort of connection to her transformation and her future as a villainess.
Well, of course, the main character is the one who becomes the 'true villainess'. There might also be a male lead, perhaps a hero or a love interest who is in conflict with her new villainous nature. And then there could be secondary characters like her family members, friends from before her transformation, or other villains in the story who she may interact with, compete with, or form alliances with.
The protagonist who transforms into the villainess is the central figure. She is likely to have some sort of antagonist, could be a person who stands for good and tries to stop her from her villainous deeds. There may be her servants or attendants in the story, who might witness her change and have different reactions to it. Also, there could be a wise old character, like a mentor or an elder, who either tries to guide her back to the right path or further encourages her villainy depending on their own motives.
Perhaps there is a love interest who has to deal with the protagonist's transformation into a villainess. His reactions and how he tries to handle the situation could make him an interesting character. Also, there could be a rival character who is constantly at odds with the villainess - to - be, and their battles of wits would be engaging.
The protagonist herself is very interesting. Since she has become a 'true villainess', her character development is something to watch. There might be a love interest who has an unexpected reaction to her new persona. And perhaps a rival character who challenges her in different ways.
One main theme could be self - discovery. As the character becomes a 'true villainess', she likely discovers new aspects of herself, both good and bad. Another theme might be power dynamics. In the role of a villainess, she has to navigate through different power structures in the story's world.
One main theme could be self - discovery. As the character becomes a 'true villainess', she might be exploring a new side of herself. Another could be power dynamics, like how she wields her new - found villainous status in the social hierarchy. And also, there could be a theme of redemption or change as she may not stay a villainess forever.
The protagonist herself is surely interesting. As she transforms into a villainess, her character development is something to watch. There might be a love interest who has to deal with her new 'villainous' side and their relationship is complex.
Survival could be a key theme as well. In a world where being a villainess might make her many enemies, she has to find ways to survive, whether it's through political intrigue or outsmarting those who would bring her down.
Power and corruption could be a central theme. When becoming a 'true villainess', she may be tempted by power and gradually become corrupted by it. Love and hate is also possible. She might have complex feelings towards the people around her, such as hating those who oppose her and having an unexpected form of love or attraction to certain characters. Additionally, redemption could be a theme. Even though she's becoming a villainess, there could be a chance for her to redeem herself in some way.
I think it's quite an interesting concept. The idea of becoming a true villainess can lead to many unexpected plot twists. It might explore the character's journey from an ordinary person to someone with villainous traits, which can be both exciting and thought - provoking.
I'm not sure exactly as I haven't read the novel in full, but surely the main character is the girl who wants to become the best villainess. There must also be other characters who either support her in her quest or oppose her, like other nobles or potential love interests.
One similar novel could be 'The Villainess Reverses the Hourglass'. It also has a female lead with a somewhat villainous role. Another one is 'How to Get My Husband on My Side' which has elements of a female character having to navigate a complex situation like a villainess might. And 'I'm a Villainess, So I'm Taming the Final Boss' is also in a similar vein.