Since we don't have much information about this 'omega light novel', the main characters could be various. Maybe there's an omega hero or heroine who is on a quest. There could also be side characters like friends or foes that are either alphas, betas or other omegas, each with their own personalities and goals that interact with the main omega character's story.
I don't know as I haven't read it. It could be an omega protagonist, or there might be a group of characters including alphas and betas along with the omega.
I don't know for sure since I haven't read it. But it could have the vampire omega as one of the main characters. There might also be an alpha vampire who has some sort of relationship with the omega, whether it's a conflict or a romantic one. Another possible main character could be a human who gets involved with the vampire omega's world.
Since I'm not familiar with this novel, the main characters could be an omega and someone who changes their life. Maybe there's a strong - willed alpha who becomes involved with the omega. Or perhaps it's another omega and they share a special bond in the story.
I'm not entirely sure, but there could be the store clerks who seem to know more than they let on.
I don't know the exact main characters as I haven't read the novel. But surely, the prince is one of the main characters. There may also be some people close to the prince like his servants or guards who might be involved in helping him hide his omega status.
Omega Red is definitely one of the main characters. Since it's about him, he'll be at the center of the story. There might also be heroes like Wolverine who often has run - ins with Omega Red in the Marvel universe.
It's hard to say for sure without reading it, but it could include Naruto himself. Maybe he has a different role in this fanfiction, like being involved in the omega - related events in a special way.
Sometimes there could be an older, wiser dog that acts as a mentor to the puppies. This character could offer advice and guidance to the alpha and omega puppies, especially when they face difficult situations like dealing with a predator or finding a new place to live.
It could be an original omega mutant character created specifically for the fanfic. This character might have abilities that are a blend of Naruto - like ninja skills and mutant - like powers.
Typically, the main characters would be the alpha pup and the omega pup. They are the central focus of the fanfic.
I assume the main characters are the alpha and omega, but without reading the graphic novel, I can't say for sure if there are other important characters.