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.
The 'trapped with jester fanfiction' could potentially be about a psychological exploration as well. The situation of being trapped can create a lot of tension. The jester could be used as a symbol of chaos or unpredictability in this trapped scenario. For example, the jester's actions and words might either drive the trapped person crazy or actually be the key to their survival, and the fanfiction might delve deep into the mental states of the characters in this extreme situation.
As I haven't read the 'jester novel', I can't say for sure. But I would expect the jester to be one of the main characters. There might also be a noble or a king that the jester serves.
The main characters are, of course, the king and the jester.
I don't know for sure, but since it's about a jester among the league, the jester is likely a main character. There might also be other important characters within the league, such as the league's leaders, the jester's friends or rivals in the league.
Sometimes it can be a minor character from the Twilight series who gets into a situation where they are truly trapped in the Twilight world in a different way than in the original story. They then have to find their own path to freedom.
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.
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.
Well, Ruby and Weiss might start off bickering as usual at first. But as the situation gets more dire, they start to rely on each other. Weiss could use her summoning skills to help Ruby in combat if they face any threats while trapped. Blake and Yang would have a more sisterly bond. Yang would be protective of Blake, and Blake would use her intelligence to help Yang make better decisions.
Definitely Adam, Bree, and Chase. Adam with his super strength could be trying to break through the barriers of the speed trap. Bree, with her super speed, might be both a target of the trap (as it's speed - related) and also a key to getting out. And Chase, being the intelligent one, would be figuring out how the trap works and formulating plans to escape. There could also be Mr. Davenport involved, as he is their mentor and might be trying to help them from the outside or get trapped with them and use his technological knowledge to find a solution.
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.