Maybe an old wise monster who acts as a mentor to the younger monster girls and the human. This character would have a lot of knowledge about the history of both the monster world and the relationship between the two species. They would offer guidance and advice, like when the group is facing a difficult decision or a powerful enemy. Their wisdom would be crucial in helping the others navigate through various situations in Monster Girl Stories.
A monster girl with unique powers, like the ability to control elements such as fire or water, could be a main character. She would use her powers not only to survive but also to help those around her. For example, she might use her fire - controlling ability to keep her friends warm during a cold journey or to fight off enemies that are afraid of fire. And she would have her own personality, maybe she's kind - hearted but also a bit headstrong at times.
I'm not entirely sure, but there could be a powerful vampire girl as one of the main characters. She might have special powers like the ability to control minds or turn into a bat.
In Monster Girl Encyclopedia Stories, some of the prominent main characters are the centaur girls. They are half - human and half - horse, and their strong and proud nature makes them stand out. Another important type of character is the succubus. These alluring and often mischievous monster girls play significant roles in many of the stories. And of course, the humans who get involved with them, like the young adventurers or scholars who study the monster girls, are also main characters as they drive the story forward through their interactions.
Some of the main characters are the various monster girls. Each type of monster girl, like the lamia or the harpy, can be a central character in different side stories. They bring their own personalities and traits to the story.
The protagonist is often a human male who finds himself in the world of monster girls. He plays a crucial role in the story as he interacts with the different monster girl characters. Then there are various monster girl characters like the cat - girl type, who is usually agile and has a mischievous side. Another could be a dragon - girl, who is powerful and has a strong sense of pride.
I'm not sure exactly who the main characters are in 'Monster Girl Story' without more information. But it's likely to have a human character as a protagonist who serves as the link between the human world and the world of monster girls.
The doppelganger characters are likely to be among the main ones. Since it's in the title, they probably play a central role in the stories.
Typically, the main character is the one who has been reincarnated as a monster girl. There might also be other supporting characters like friends or mentors she meets along the way. Maybe there's a wise old monster who helps her understand her new powers.
The main character is likely the doctor himself. He is the central figure around which the story revolves as he treats the monster girls.
Obviously, the hellhound monster girl herself is a main character. There might also be a sidekick or a friend who helps her through her adventures. Maybe a wizard or a brave knight who doesn't judge her for what she is.
Since I don't have much information about the Monster Girl Matango Story, it's difficult to determine the main characters. But surely the Monster Girl Matango herself would be one of the main characters.