I don't know for sure. But I assume there would be the vampire servant as one of the main characters. And probably the vampire master who the servant serves.
I don't know as I haven't read this 'the servant novel'. It could be the servant themselves, perhaps named something like Tom or Mary. And there might be the master or mistress of the house as important characters too.
Kakashi could also work well. His laid - back yet highly skilled personality would be a contrast to the more mysterious and often dark nature of a vampire. As a vampire servant, he could use his vast knowledge of ninja techniques in combination with his new vampiric powers. For example, he could use his vampire - enhanced speed to perform his Raikiri even faster and more powerfully, while also having to deal with the thirst for blood and how it affects his relationships with his comrades.
I'm not sure specifically as I haven't read it in detail. But generally, it might be about a vampire servant's life, his or her relationship with the vampire master, and the adventures or challenges they face in the vampire world.
Since the title is 'servant of the bones graphic novel', it's very likely that the servant of the bones is a main character. There may also be other characters like those who interact with the servant, perhaps a master who commands the servant, or an enemy who tries to stop the servant from fulfilling its purpose related to the bones.
I'm not sure exactly as I haven't read it yet, but typically in an Argeneau vampire novel, there would be members of the Argeneau vampire family. There might be the runaway vampire as a main character, and perhaps a love interest, either human or another vampire.
Obviously, the maid and the vampire are the main characters. The maid might be an ordinary girl who gets caught up in the extraordinary world of the vampire. The vampire could be a centuries - old creature with a complex personality. There may also be a character like the maid's friend or family member who plays a role in the story, perhaps by trying to protect her from the vampire or getting involved in the vampire - related affairs.
The main characters include Louis. He is the vampire who tells his story. Lestat is another important character, a more flamboyant and complex vampire. Claudia is a young vampire created by Lestat and Louis.
I don't know for sure since I haven't read it. But it could have the vampire omega as one of the main characters. There might also be an alpha vampire who has some sort of relationship with the omega, whether it's a conflict or a romantic one. Another possible main character could be a human who gets involved with the vampire omega's world.
Without having read the book, it's difficult to say for sure. However, it's possible that there is a group of kindred vampires who are central to the story. Among them, there might be a leader figure, a vampire with unique abilities or a complex past. There could also be a human character who has a special connection to the vampires, like a vampire hunter who discovers a deeper truth about the kindred vampires, or a human who has a family connection to the vampire world and is trying to understand their place in it.
There could be a young vampire who is new to the world of bloodbond and is learning the ropes. This character would be interesting as we could see their journey of discovery, dealing with their new powers and the rules of the vampire society that revolve around the bloodbond.