Since I haven't read it, I can only guess. There might be a young and curious character who is drawn to the mystery of the Monster Paradise and becomes one of the main characters. There could also be an experienced guide - type character who helps the others understand the rules and dangers of this strange world of monsters.
There's no way to be certain without reading the novel. However, common character archetypes in such stories could include a strong - willed warrior who is good at fighting the monsters, a clever mage - like character who uses magic to deal with the various challenges in the Monster Paradise, and a kind - hearted healer who takes care of the group when they get injured in their encounters with the monsters.
I don't know the exact main characters as I haven't read it. But usually in such novels, there is a protagonist who drives the story forward.
I'm not entirely sure, but generally, a 'monster paradise web novel' would probably have elements of fantasy. It could feature different types of monsters with distinct abilities and appearances. The plot might be centered around a group of characters who are either trying to protect this Monster Paradise from some external threat or are exploring it for their own gain, like finding rare treasures or unlocking powerful magic that is somehow related to the monsters.
Since I haven't read the Monster MC Web Novel, I can't say for sure who the main characters are. But typically in such a novel, there would be the Monster MC, who is likely to be the central focus of the story. There might also be side characters like friends or allies who help the MC on their journey, and perhaps antagonists who oppose the MC, such as other powerful monsters or villains who want to stop the MC from achieving their goals.
Since I haven't read 'Monster Invasion Web Novel', it's hard to say exactly. However, it's common to have a young protagonist with some special abilities or potential. There might also be a wise old mentor - like character who guides the main character in dealing with the monster invasion.
I'm not sure specifically as I haven't read it in full, but often there's a protagonist who is the main monster tamer. There might also be friends or rivals that play important roles in the story.
The main character is likely the doctor himself. There may also be some important monster girl characters who are his regular patients or who play significant roles in his adventures.
I don't know exactly who the main characters are in the 'dark paradise novel'. However, it's common in such novels to have a hero - type character who is on a journey of discovery in this strange and dark place. There could also be supporting characters like a wise old figure who gives advice, or a sidekick who helps the main character in their adventures.
I'm not sure exactly, but there might be a smart detective as one of the main characters.
I don't know as I haven't read the novel. But they could be cheaters themselves, perhaps some sort of anti - heroes who operate in this so - called paradise.
Since I haven't read the 'Trouble in Paradise' novel specifically, I can't say for sure who the main characters are.