Often, the main characters are those who have a connection to the basilisks in some way. It could be a wizard or a witch who is trying to understand or control them.
Without having read the 'On Basilisk Station Graphic Novel', it's difficult to name the exact main characters. But if it follows common patterns, there could be a lead character who is a skilled fighter or problem - solver. This person might be tasked with protecting the station from external threats or solving internal mysteries. There may be a scientist character who is studying something unique at the station, like an unusual energy source or a new species. And there could be a character who has a personal vendetta related to the station, either something from their past or a current grudge against someone on the station.
Harry Potter is likely to be one of the main characters. Since it's related to the Harry Potter universe, he would probably play a significant role in any story involving the basilisk, whether it's to defeat it or understand it.
Naruto is likely to be one of the main characters since it's a Naruto - related fanfiction. His character might be central to the story, either in relation to the 'Eyes of Basilisk' or in trying to counter their power.
Obviously, Harry Potter would be one of the main characters. He's the hero of the original series and would likely play a central role in any fanfic about the basilisk. Hermione Granger would probably also be there, using her intelligence to help solve the problems related to the basilisk.
The basilisk is also a main character. In the original Harry Potter lore, it's a giant serpent with deadly powers. In this fanfiction, it likely plays a crucial role in the story, perhaps having a more developed personality or motives than in the original.
Typically, there would be the brave and resourceful military commanders. They are the ones making the tough decisions. There might also be some ace pilots who fly the ships in combat situations.
Harry Potter is the central figure for sure. His friends, Ron and Hermione, are likely to be important as they usually are in Harry Potter stories. In addition, there could be antagonists who are either against Harry because of his strange origin or are trying to use his basilisk - related powers for their own evil purposes. There might also be some sort of basilisk - like creatures or characters with a connection to basilisks that play a significant role in the story.
In many fanfictions, Severus Snape could be involved. He has a deep knowledge of dark magic, so he might be either trying to prevent the basilisk ritual from being misused or he could be lured by the power it offers. Dumbledore is also a likely character. He would be the one to guide the students or other characters in dealing with the implications of the basilisk ritual. And of course, Tom Riddle (Voldemort) could be a key figure if the ritual has something to do with his rise to power or his plans for the wizarding world.
Well, it's highly likely that there is. The Harry Potter fanfic community is vast and full of diverse ideas. Writers often explore unique combinations like this. In such a fanfic, perhaps Harry's Animagus form could have features similar to a basilisk, like the deadly stare or the ability to move through small spaces like a snake. He might also face challenges or advantages based on this form in the story, which could make for a very interesting read. You should start your search on popular fanfic sites and see if you can uncover this kind of gem.