Based on the title 'twin trouble times two novel', we can assume the main characters are twins. There could be four main characters if there are two pairs of twins. However, there could also be other characters around the twins that contribute to their trouble. Maybe there are parents who are always mixing up their twins, or friends who accidentally cause more trouble for the twins. Without reading the novel, it's hard to say exactly who the main characters are, but the twins are definitely at the center of it.
Since the title has 'twin trouble', it could be about the challenges twins face in their daily lives. Maybe they are constantly being mistaken for each other, or they have some sort of special connection that causes chaos. And 'times two' could suggest there are two pairs of twins involved in the story, which would multiply the problems and interesting situations in the novel.
I don't know for sure as I haven't read this 'twin novel'. But they could be the twins themselves, and perhaps their parents or friends who play important roles in their lives.
The main character is Fleishman. Since it's about him being in trouble, other characters that are important could be those in his inner circle. Maybe his children, if they are affected by the family situation. And his business partners or bosses if his career problems are a major part of the story. They all interact with Fleishman and contribute to the overall narrative of his troubles.
Often, there will be a central girl character who is facing the trouble. She could be a teenager, like a high - school girl dealing with bullying or family issues. There might also be her best friend who plays a supporting role, either helping her out or getting into trouble alongside her.
I have no idea as I haven't read the novel. It could be a patient with heart trouble as the main character.
I'm not sure specifically as the name doesn't give away the characters directly. But typically in a love novel, there would be the two lovers at the center. Maybe a male and a female character who are from different backgrounds or have different personalities.
Since I haven't read the 'Trouble in Paradise' novel specifically, I can't say for sure who the main characters are.
There could be a diverse range of characters. It might have a young, naive character who gets dragged into the big trouble and has to grow up quickly. There could also be an older, wiser character who acts as a mentor or guide to the main character. And of course, there could be side characters like friends or family members of the main character who are also affected by the big trouble.
I don't know as I haven't read this 'twin stars novel'. There could be all sorts of main characters. Maybe it has a male and a female lead who are the 'twin stars' in a metaphorical sense.
As I'm not familiar with this 'twin sword novel', it could have a main character who is a skilled swordsman or swordswoman. There might also be a mentor - like figure who guides the protagonist in their journey related to the twin swords. And there could be an antagonist who wants to get the twin swords for their own evil purposes.