The main character is Madman himself. He's a really interesting character with a lot of depth.
The main characters are, as the title suggests, the professor and the madman.
We can only make assumptions without more information. Komoiji is probably a main character. There could be side characters like a mentor figure who tries to understand or help Komoiji if they are indeed a'madman'. Or there might be a rival character who challenges Komoiji in some way, perhaps due to their 'madman' - like behavior. It all depends on the nature and plot of the visual novel.
The main characters are the professor and the madman, of course.
The main characters are the professor and the madman. The professor might be a figure of knowledge, perhaps an academic in a certain field. The madman could be someone with a mental disorder or an eccentric character. Their stories might cross paths in an interesting way, like the professor might be interested in the madman's unique way of thinking or the madman might have some knowledge or experience that the professor finds valuable.
Obviously, the two main characters are the professor and the madman. The professor is likely an academic figure, involved in some sort of intellectual pursuit. The madman, on the other hand, is someone with mental issues but still has a role to play in the story, perhaps having some unique qualities that draw the professor's attention.
The main characters are the professor and the madman, of course. Their relationship and their contributions are central to the story.
The main characters are the professor and the madman, of course. The professor is likely someone with a passion for knowledge and a drive to create a great work, like a dictionary. The madman, despite his condition, has a remarkable intellect that the professor comes to rely on.
I'm not sure specifically which 1986 graphic novel you're referring to. There are so many graphic novels from that year. Without more information, it's impossible to say who the main characters are.
The main character is Winston Smith. He works in the Ministry of Truth, where he starts to have rebellious thoughts. His relationship with Julia, a young woman who also rebels against the system, is central to the story. O'Brien, on the other hand, is a complex character. He initially gives Winston the impression that he is against the Party, but later reveals his true loyalty to the regime, and plays a crucial role in Winston's downfall.
I don't know who the main characters are in the '2112 graphic novel' as I haven't read it.