Since I don't know the specific 'beetle boy story', the main character is likely to be the boy himself. There might also be some beetles as important characters, perhaps a wise old beetle or a brave young beetle that helps the boy.
The main character is surely the beetle boy. He could be accompanied by his friends or family members who support him in his beetle - related adventures. And of course, there would be the beetles which could range from a tiny but magical beetle to a large and powerful one that are central to the story.
Since it's called 'beetle boy novel', the beetle boy is surely a main character. He could be joined by other characters such as a mentor figure who helps him understand beetles better. There might also be antagonists, perhaps people who are against the beetles or what the boy is trying to do with them. Maybe there are some fellow beetle enthusiasts as well who become his friends along the way.
The main characters are the beetle and the turtle, as it's a story about them.
I'm not entirely sure as there could be many different 'beetle boy stories'. It might be about a boy who has a special connection with beetles, perhaps he can communicate with them or they play an important role in his adventures.
Beetle Boy's story is about a young adventurer who discovers amazing secrets and faces many challenges along the way.
The main plot of 'beetle boy novel' likely revolves around a boy and his relationship with beetles in some way. Maybe he discovers special beetles, or perhaps he has an adventure involving beetles. Without reading it, it's hard to say exactly.
In the 'Ms Beetle Christmas Story', Ms Beetle is the central character. There might be a wise old owl who gives her advice on how to find the best Christmas treats. Also, there could be a group of friendly ants who are busy preparing their own Christmas celebration and Ms Beetle joins them for a while. Another possible character could be a little mouse that shares a warm shelter with Ms Beetle on a cold Christmas night.
Since we don't really know the exact 'Game of Throne Beetle' story, it's hard to say. But perhaps there could be a brave beetle hero, a cunning beetle villain, and some ordinary beetles just trying to get by.
Obviously Naruto would be one of the main characters since he is in the title. And probably the Blue Beetle or someone related to the Blue Beetle concept, like the previous bearers of the Blue Beetle power or the people who help Naruto understand the powers.
Since we don't know the full story, it's hard to say for sure. But it's likely that the main character is the 'rose beetle man' himself.
Since I don't know the specific story, the main characters could be the king beetle itself. It might be a central figure around which the story revolves.