Since I haven't read the 'Walker of the Worlds Light Novel', it's difficult to say exactly who the main characters are. However, based on the genre of light novels, we can expect a protagonist who is likely to be the 'walker'. This character may be young and inexperienced at the start but grows throughout the story. There could be a female lead as well, perhaps a princess from one of the worlds who needs the walker's help. And then there might be a group of side characters, like a band of thieves who the walker has to deal with at some point, either as friends or foes.
As I don't know the exact 'walker of worlds novel', it's hard to say. But it's likely that the main character is the 'walker of worlds' themselves. There might also be side characters like a guide in one of the worlds they visit, or an enemy who tries to stop them from traveling between worlds.
I'm not entirely sure about the specific plot of 'Walker of the Worlds Light Novel' as I haven't read it in detail. But generally, it might involve a protagonist's journey through different worlds, facing various challenges and perhaps making new discoveries along the way.
There is not enough information to determine the author of the 'walker of the worlds novel'. It could be an indie author whose work is not widely known yet, or it could be a relatively new release from an established author under a different genre or pen name.
There is the protagonist, who is the reincarnated assassin. Then there are likely characters like his mentors or trainers in the world of assassination in the novel. There may also be characters who oppose him, such as powerful nobles or other assassins who see him as a threat. These characters together create the complex web of relationships in the story.
The main character is, of course, the assassin. His name and his specific backstory are central to the story. There are also likely to be other important characters such as his targets, his allies who might help him in some missions, and his enemies who are trying to stop him.
The main characters are Poppy and Walker, as the title implies.
Since I haven't read it, I can't say for sure. But there's probably a spirit walker as a main character. There might also be a mentor figure who helps the spirit walker understand their powers better.
I don't know for sure since I haven't read it. But it could be a young adventurer who has a special talent for breeding monsters.
Obviously, Poppy and Walker are the main characters.
I'm not sure specifically as there could be many novels with such a title. It might be about a character who travels through different worlds, perhaps exploring new cultures, facing various challenges and adventures in each world.