The main characters in 'trapped by him novel' are probably the one who is trapped and the 'him' character. The trapped character could be a young adult, perhaps a female, who is in a vulnerable position. 'Him' could be an older, more powerful figure. There might also be a sidekick - like character, a best friend of the trapped one who is always there to give advice or get them out of minor troubles that are part of the bigger trapped situation.
I don't know the exact main characters in this novel as I haven't read it. But it's likely that there is a character who is the one being trapped, and of course, 'him' who is the one causing the entrapment. There could also be other supporting characters like friends or family members of the trapped character who try to help or are unknowingly part of the situation.
I'm not sure specifically as there are many novels with this kind of title. But generally, there could be a protagonist who is deeply in love and feels trapped in that love. It might be a young woman, for example, who is in love with a man who has some sort of secret or is not fully available to her.
The 'trapped by him novel' could potentially be about a woman who finds herself in a difficult situation because of a man. It could be that she is trapped in a location by this man, perhaps in an old mansion or a desolate place. Or it could be about her being trapped in a web of lies or schemes that he has created, and she has to find a way to break free.
I'm not entirely sure without reading it, but usually there's a central protagonist who is the one trapped in the game. This character is likely to be the focus of the story and the one driving the plot forward through their actions and decisions.
In a 'trapped demon visual novel', the main characters are likely to be the demon at the center of the story. There might also be a hero - like figure who is either responsible for the demon's trapping or is on a quest to free it. Additionally, there could be other demons or supernatural beings who are either allies or enemies of the trapped demon, and they would also play important roles in the narrative.
The main characters would most likely include the woman whose heart is the focus of the story. She could be a young woman, maybe in her twenties or thirties, dealing with various emotional challenges. There may also be her family members, like a mother or sister, who could influence her emotional state. And of course, there could be a romantic partner or a friend who is somehow involved in her being trapped in her heart situation.
I'm not sure as I haven't read the novel specifically. But usually, there would be the two lovers at the center of the 'tainted love' situation. Maybe one of them is a character who has some sort of past or secret that taints the relationship.
In 'trapped with jester fanfiction', it might be that the main characters are the jester and a noble who has fallen from grace. They are trapped together, and the contrast between their statuses - the jester being a lower - class entertainer and the former noble - creates an interesting dynamic in the story. The noble might initially look down on the jester but as they face the challenges of being trapped, they start to see the jester in a new light.
Another notable character could be the antagonists in the dating sim world. They create obstacles for Leon, whether it's in the form of competing for the affection of the female characters or trying to disrupt the world's balance. Their presence drives the plot forward and makes Leon's journey more challenging.
I'm sorry, without reading the novel, it's hard to say exactly who the main characters are. But usually in such novels, there would be a protagonist who is at the center of the quest for private justice. There might also be some antagonists who oppose the protagonist's version of justice.
Since I don't know the specific 'Trapped in the Cabin' true story, I can't say for sure who the main characters are. They could be a family who went on a vacation and got trapped in a cabin in the mountains.