Since I don't know the exact 'evil king step aside novel', I can't say for sure. But likely, there is the evil king as one of the main characters. There might also be a hero or a group of rebels who are trying to make the king step aside.
In a novel like this, the evil king is surely a key character. He could be cruel, power - hungry and ruling with an iron fist. Besides him, there may be a brave knight or a clever strategist who leads the charge against the king. There could also be side characters like the king's advisers who play a role in either supporting the king or defecting to the other side.
The 'evil king step aside novel' might have a very interesting premise. Maybe it's set in a fictional medieval - like world. If the evil king is a tyrant, the story could be about the oppressed people rising up against him. It could also involve political intrigue, battles, and characters with complex motives trying to force the king out of power for various reasons.
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.
Sakura could be a main character. She could be the one who encourages Naruto to get into dance in the first place. Maybe she has a secret love for dance and wants to share it with Naruto. She could also use her medical ninjutsu knowledge to help prevent dance - related injuries within the group.
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.
I don't know for sure as I haven't read it, but usually in a light novel with a concept like this, there might be a mentor figure who tries to stop Sistine from becoming evil. There could also be friends or allies who are shocked by her transformation.
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.
Well, King Cold himself would surely be an important character. He could be portrayed as a strict and overbearing father figure, constantly pressuring the OC to be more like him. Frieza could also be a main character, perhaps as a jealous brother who sees the OC as a threat to his own position in the family hierarchy.
The main characters of 'A Step into the Past' are椤瑰皯榫, who is at the center of the story, and various historical personalities whose paths he crosses. Their interactions drive the narrative forward and add depth to the story.
I'm not entirely sure, but I think there is a modern - day character who travels back in time.