In the 'evil king story', the king is the central figure. However, there could be other important characters too. For instance, a wizard who tries to use his magic to either support the king's evil deeds or to stop him. And there may be a young princess who is held captive by the king and becomes a symbol of hope for the people to fight against him.
Given the title 'the noble evil king novel', the king is bound to be one of the central characters. He could be surrounded by a court of nobles, some of whom might be his allies and some his enemies in disguise. There may also be a female character, like a princess or a witch, who either has a romantic interest in the king or is trying to manipulate him for her own purposes. Another possible main character could be a young hero from a humble background who rises up against the king's evil rule.
Given just the title, we can assume that the main character is the noble evil king. But there may be other important characters too. For example, there could be a group of rebels who are trying to overthrow the king, thinking he is truly evil. Or perhaps a wizard who has some sort of connection to the king, either as an old acquaintance or an enemy. And there could be a court jester who provides some comic relief while also having some insights into the king's true nature.
Based on the title, the main characters are likely the evil king and his wicked consort.
In the Resident Evil 4 story, Leon S. Kennedy is the key character. He's a tough and resourceful agent. Then there's Ashley Graham, the damsel in distress who Leon is tasked with rescuing. There are also some other characters like the villagers who are infected by the cult's parasites and act as antagonists, and there are some bosses within the cult that Leon has to face as well.
Since I don't know the exact 'Story of Evil Novel', I can't say for sure. But usually, there might be an anti - hero who is on the verge of becoming evil or is already evil but has some redeeming qualities. There could also be a hero who is trying to stop the spread of evil.
Given the lack of knowledge about this specific story, it's hard to determine the main characters. But if it's a horror story, perhaps there is a protagonist who tries to fight against this watching evil. There could also be side characters like a detective or a psychic who help the main character figure out what is going on and how to stop the evil from watching.
The main character is Sebastian Castellanos. He's the one who gets trapped in the nightmarish world.
The main character is the evil girl, no doubt. But there could be a whole cast of characters around her. There might be her sidekicks if she has any, who help her carry out her evil plans. Then there are the people she targets, which could be anyone from a rich merchant she wants to rob to a kind - hearted neighbor she wants to drive out of town. And there could be a wise old mentor - like figure who tries to guide the other characters to overcome the evil girl's influence.
Since I don't know the exact 'evil boy story', I can't say for sure. But most likely, the main character would be the evil boy himself. There might also be characters who are his victims, like other children, adults in his community, or even animals if it's that kind of story.
The main characters in 'Possibility of Evil Story' are not defined without more information about the specific story. However, common in such stories could be a character who acts as a sort of detective or observer, trying to make sense of the evil they sense or discover. There might also be characters who are part of the source of the evil, perhaps a group with a hidden, malevolent agenda, and characters who are directly affected by this evil, such as innocent bystanders who find their lives disrupted by the emerging evil.