I don't have information about the main characters in this specific 'Monster Musume Futanari Stories'. In the Monster Musume series in general, the main characters usually contribute to the overall themes of inter - species relationships. For instance, a slime - girl character might bring in the idea of a unique form of life interacting with humans. The characters' interactions often drive the plot, whether it's through comical misunderstandings or more serious emotional exchanges.
I'm sorry, I'm not familiar with the specific main characters in 'Monster Musume Futanari Stories'. But in general Monster Musume works, there are often various monster girls like a lamia, a centaur, etc. Each has their own distinct personality and abilities.
I'm not sure as I haven't specifically read all the stories in it. But generally, in Monster Musume - related works, there are often stories about the coexistence and relationships between humans and monster girls, which might include themes of friendship, love, and cultural differences.
Since it's a 'monster musume graphic novel', there are likely to be monster musume characters as main characters. These could be different types of monster girls like a lamia, a harpy or a slime girl. There might also be a human character who gets involved with their world and becomes one of the main characters in the story, through which we can see the interactions and developments among them.
I'm not entirely sure as there isn't a lot of information available without actually reading or experiencing the 'Monster Musume Minotaurs Story' specifically. But it's likely that there would be at least one prominent minotaur character as the focus. There could also be other supporting characters like humans or different types of monster girls who interact with the minotaur(s).
As I don't know the exact details of the story, it's difficult to say for sure who the main characters are. But it's likely that the minotaur would be one of the main characters. There might also be other monsters or humans that play important roles in the story, perhaps friends or foes of the minotaur.
Since I don't have specific information about this particular 'Monster Musume Inflation Story', in the general Monster Musume series, there are characters like Miia, a lamia. But for this specific inflation story, it's hard to tell who the main characters are without more details.
The main character is often an ordinary human who finds himself in extraordinary situations due to his interactions with the monster musume. Among the monster musume, there could be a slime girl who is very curious and friendly, a mermaid - like creature who is a bit shy but has a kind heart. There may also be a werewolf - type character who is strong - willed and protective. These different characters play important roles in the story, driving the plot forward with their relationships with the human main character.
Given the title 'futanari monster girls story', the main characters are probably those who fall into the categories of futanari and monster girls. Futanari characters might bring their own personalities and abilities, while monster girls could include a diverse range of characters such as snake - like monster girls, or fairy - like ones if it follows the common tropes in similar fictional works. However, without more information, this is just speculation.
The main characters in the 'Monster Musume no Oishasan' light novel would include the protagonist, who might be in a position of providing care or assistance. Among the monster girls, there could be one that is the leader or spokesperson of sorts for the group. Another could be the one who causes the most trouble at first but later becomes an important part of the story. There may be a shy monster girl who slowly opens up as the story progresses. But again, this is all speculation without a full read of the novel.
Smith Lemon is surely a main character. Then, depending on the fanfic's focus, it could be a mermaid - like monster musume. She could bring a sense of mystery as she is from the underwater world. There might also be a centaur - type character who is strong and has a noble personality. All of these characters, along with Smith Lemon, would play important roles in the story, each with their own goals and personalities that collide and interact.
I'm not entirely sure as I haven't read every bit of it, but likely there are some key monster girl characters and maybe a human protagonist.