Perhaps a younger member of the villain's family. They might be more open - minded compared to the older members. They could be the one who first accepts the protagonist and helps them understand the family better. Their internal struggle between loyalty to their family's 'villainous' ways and their new - found friendship or relationship with the protagonist can make them a really engaging character.
The protagonist is usually quite interesting. They are the ones thrust into the world of the villain's family and have to navigate through all the challenges. Their journey of adaptation and trying to fit into a family with a not - so - good reputation is captivating.
The villain himself is often very memorable. He might have a complex personality, not just pure evil. Maybe he has a soft spot for his family, which makes him more three - dimensional. The main character who is becoming part of the family is also memorable as they navigate the strange new world of the villain's family. And there could be a wise old family member, like an elder, who has a lot of secrets and knowledge about the family's past and future.
The head of the villain's family could be really interesting. They are likely to have a complex personality, being a villain but also having a family side. Their decisions and actions would shape the family's future and the story as a whole. They might be cruel in some ways but also show unexpected kindness to their family members.
The villain themselves would be the most interesting. Their journey from being a villain to embracing the light is full of potential for character development. They have to overcome their past, deal with their inner demons, and adapt to a new way of life. Also, any characters who oppose the villain's change could be interesting. They might be resistant to the idea of a villain becoming good and their reasons for that resistance can add depth to the story.
I think the villainess herself could be really interesting. She's likely to have complex motives and a unique personality. Maybe she's not a typical 'bad guy' but has her reasons for her actions.
Well, love might be a theme too. It could be a love that defies the expectations of the 'villain' label. Maybe the protagonist falls in love with someone in the villain's family and this love challenges the pre - conceived notions about the family. Also, power struggles within the family could be a theme. With the villain's family, there are likely to be fights for power, inheritance, or control.
One interesting plot twist could be that the main character, who initially tries to resist becoming part of the villain's family, discovers that the villain has a noble reason for their actions. For example, the villain might be trying to protect a group of people from a greater evil that the outside world doesn't understand. Another twist could be that the family itself has a secret power that the main character unlocks, changing the power dynamic not only within the family but also in the world they inhabit. And perhaps the main character realizes that they are related to the villain in a way they never expected, which adds a whole new layer of complexity to their relationship and the story.
The protagonist is likely to be one of the most interesting characters. Since they choose to live as a villain, their motives and actions are bound to be unique. They might have a complex backstory that led them to this decision.
One possible plot twist could be that the siren, initially thought to be a tool for the villain, actually has a hidden agenda to redeem the villain's family. Another could be that the siren discovers she has a long - lost connection to the villain's family that changes the whole dynamic. And perhaps the siren's presence causes unexpected positive changes in the villain's family members, making them question their villainous ways.
Frankenstein is really interesting. He's extremely intelligent and his loyalty to Raizel is both fascinating and complex. He has his own set of skills and abilities that he uses in various situations throughout the story.
One of the most interesting characters has to be Ainz Ooal Gown. He is constantly trying to navigate his new role as an all - powerful overlord while still having memories and emotions from his human life. Then there's Mare Bello Fiore. His shy and gentle nature is in contrast to the often brutal world of Overlord. It's interesting to see how he copes with the actions and orders within Ainz's regime. And of course, Cocytus, with his strict sense of honor and his military - like mindset, is also a very engaging character in the story.