Obviously, the dragon emperor is likely to be one of the main characters. He is probably at the center of the story's events. There might also be some sort of wizard or mage character who either helps or opposes the dragon emperor. And perhaps a brave knight - like figure who challenges the dragon emperor's rule or becomes an ally.
I'm sorry, I don't know the main characters in this novel as I haven't read it.
In the 'dragon martial emperor novel', the main character is surely someone with great potential in martial arts. There could be his friends or comrades who support him in his quests. Maybe there are also antagonists, like powerful martial artists from rival sects or those with evil intentions who try to stop him from achieving his goal of becoming the dragon martial emperor. There may also be a love interest for the main character that adds an emotional aspect to the story.
The titular Everlasting Dragon Emperor is one of the main characters. He is a powerful figure with unique abilities related to the dragon.
The protagonist is, of course, the Primal Chaos Dragon Emperor. He is a very powerful character with unique abilities.
Since I haven't read the novel, I can't say for sure. But I would assume the martial emperor with dragon blood is one of the main characters.
I don't know for sure as I haven't read it. But typically in such novels, there could be an archaeologist as a main character, someone brave and curious.
Obviously, the Black Dragon Emperor himself is a main character. He is likely to be at the center of the story, with his actions and decisions driving the plot forward.
The main characters in 'the invincible dragon emperor novels' would most likely start with the dragon emperor. He would be at the center of the story. There might be other characters such as rival emperors or kings from different lands who pose a threat to him. Additionally, there could be characters from different races, like elves or dwarves, if the world of the novel is rich in diversity. His family members, if any, might also be important characters, for example, a father who passed on his powers or a son who is being groomed to take over in the future.
One common character paired with the White Dragon Emperor is his rival, the Red Dragon Emperor. Their interactions, whether it's in battle or begrudging cooperation, are often central to the story.
Well, Naruto is most likely one of the main characters since it's a Naruto fanfiction. And probably there will be a character related to the black dragon emperor, whether it's the black dragon emperor itself or someone who has a connection to it. There could also be other Naruto characters like Sasuke or Sakura involved, depending on how the author wants to develop the story.