There could be a sidekick character who helps the invincible one. Maybe a wise old man or a brave young girl who provides support and different perspectives to the invincible character.
Perhaps there is an antagonist who constantly challenges the invincible character. This could be someone with their own set of powers or skills, and their battles and interactions would form a major part of the story.
I'm not sure as I haven't read it. But usually, in a novel like this, there would be an invincible hero as one of the main characters.
Mark Grayson is a central character. He is the one who has to deal with his new - found powers and all the responsibilities that come with it.
The main character is surely the invincible sword god. He could have friends or comrades who fight alongside him. There may also be an antagonist, perhaps another powerful being who is jealous of the sword god's power or has a different view on how the martial world should be ruled. There might be a female lead who has a special relationship with the sword god, either as a love interest or a fellow warrior.
The main character in the 'Invincible Conqueror' light novel is the one with the goal of conquest. He is likely to be a complex character with both strengths and weaknesses. There may be a female lead who could be his love interest or a powerful ally. Then there are the supporting characters, such as his trainers or those from his hometown who have an impact on his growth. The antagonists are also crucial, they might be leaders of other factions or powerful individuals with their own agendas, all of which create the web of relationships and conflicts in the story.
I'm sorry, I don't know the main characters in this novel as I haven't read it.
Most likely, the main character is the invincible mercenary king. He might be accompanied by some interesting side characters. There could be a wise old mentor - type figure who has guided him in his mercenary career. And perhaps there are some rival mercenaries who constantly try to challenge his supremacy.
The main character is of course the sage. He is the one with extraordinary powers and wisdom.
As there is no known 'Invincible Star Wars Novel', we can only speculate. It could have a smuggler - type character like Han Solo, who through a series of adventures discovers something that makes him invincible, or at least gives him an edge that seems invincible in the dangerous Star Wars galaxy. There might also be a female lead, perhaps a powerful Sith apprentice who is on a path to become invincible in her own right, defying the norms of the Sith hierarchy.
There is usually a protagonist who is on a quest to become the best in the sword domain. Alongside him, there might be his friends or mentors. His friends could be fellow swordsmen who accompany him in battles and share his adventures. The mentors are those who have more experience and knowledge in swordsmanship and guide him on his path, like an old master who has mastered unique sword arts and imparts some of that wisdom to the protagonist.
Well, Naruto is surely one of the main characters. Since it's related to Naruto, he'll be at the center of the story, probably with enhanced abilities.
I don't know specifically since I don't have more details about this 'Invincible the True Story'. It could be a single person like an entrepreneur who built an empire against all odds, in which case that entrepreneur would be the main character.