There may also be antagonists in the 'Level Up with Skill' light novel. These could be characters who oppose the main character's growth or who have their own goals that conflict with the protagonist's. They might also have strong skills, which makes them formidable opponents for the main character and their friends.
In the 'Infinite Level Up in Murim' light novel, the main character is often the one with the unique leveling ability. He is likely to be surrounded by a diverse group of characters. There might be friends from different sects who join him on his adventures. Some of them could be experts in certain martial arts styles that complement the protagonist's skills. There may also be female characters who have their own importance in the story, perhaps with special abilities or knowledge that help the protagonist in his journey through the murim world.
Typically, there is a protagonist who has the cheat skill. However, without more specific information about a particular 'cheat skill light novel', it's hard to say exactly who the main characters are. There could also be a sidekick or a love interest who plays an important role in the story.
I'm not sure specifically as I haven't read the 'Skill Unparalleled' light novel in detail. But usually in such light novels, there is a protagonist who is likely to be the one with the 'unparalleled skill'. There may also be a supporting cast of friends, rivals, or mentors who play important roles in the protagonist's journey.
Since I'm not familiar with the exact details, it's possible that the main character is a young and inexperienced skill stealer. There could be a group of friends or comrades who accompany the skill stealer on their journey. There may also be powerful villains who have their own reasons for opposing the skill stealer, such as protecting their own skills or maintaining the power balance in the world of the novel.
I'm sorry, I don't know the specific main characters in 'skill taker light novel' without having read it. But usually in such novels, there would be the skill taker as a main character, and perhaps there are characters who are friends or foes of the skill taker.
The main character is, of course, the player who can't level up. I can't recall his exact name right now, but he is the central focus of the story as he struggles with his unique situation.
I'm not sure as I haven't read it specifically. But generally in such a light novel about fast leveling up, there could be a young and determined protagonist, perhaps an underdog at the start who discovers the means to level up quickly.
Well, one key feature might be its unique skill - based system. It could have characters that develop their skills in interesting ways, which drives the plot forward. Maybe the skills are not just your typical combat skills but also include things like social skills or crafting skills that add depth to the story.
In the 'Iseakai Skill Taker' light novel, the protagonist, the Skill Taker, is the central figure. There could be a wise old mentor type of character who helps the Skill Taker understand the new world and how to use their unique ability more effectively. And then there may be a rival character who also has a powerful skill and is constantly trying to outdo the Skill Taker, adding tension and conflict to the story.
The most important character in 'solo level up novel' is Jin - Woo. He is a very determined person. He starts off as a rather weak hunter but through his efforts and the unique leveling system in the story, he becomes extremely powerful. There are also other characters like his mother, who plays a role in his motivation, and some other hunters who interact with him at different stages of his journey.