The main character is probably the man who has a connection to the rats. There might also be other characters like people in his community who are affected by his relationship with the rats. For example, if he's a rat catcher, there could be clients who hire him to get rid of the rats in their houses.
Well, if the 'rat man story' is about a man who is cursed to become part - rat, part - man, then he is the main character. But there could also be other characters like the person who cursed him, or his friends and family who react to his transformation. Maybe there are also other animals or people in the environment where the story takes place, like the townsfolk who are terrified of the rats or the rats themselves which could be seen as characters in their own right if they have some sort of intelligence or agency in the story.
Since we don't know the exact 'rat man story', it's hard to say for sure. But likely the main character is the 'rat man' himself.
Not knowing the details of the 'rat man story', the main character could be a person with a unique trait or job. Maybe he's a rat catcher, and the story is about his daily struggles and experiences with rats. Or perhaps he's a magician who can communicate with rats and uses their help to perform magic tricks, and the story follows his journey using this special ability.
Since it's the 'king rat story', the main character is likely the king rat itself. There may also be other rats in the story, like his loyal subjects or rivals.
In the 'kid and rat story', the two central figures are, as the name suggests, a kid and a rat. The kid could be a young boy or girl, and the rat is the other important entity in the story. Their actions and interactions form the core of the story.
In the 'rat king story', the main characters are, of course, the rats that form the rat king. There might also be humans who discover or are affected by the presence of the rat king in some versions.
The two main characters in the 'lion and the rat short story' are, as the name suggests, the lion and the rat. The lion is this majestic, strong beast that dominates the forest. The rat, on the other hand, is a tiny creature that scurries around. But their encounter and the events that follow make them the central figures in this story. The lion's initial dismissal of the rat and the rat's later heroics create the plot's main arc.
In the cat and the old rat story, the central figures are the cat, which represents a threat, and the old rat. The old rat has to use its intelligence to deal with the cat, so these two are the main characters in this narrative.
Since I don't know the exact 'the rat catcher short story', but most likely the main character is the rat catcher himself. There might also be rats as sort of secondary characters that play an important role in the story.
The main characters are obviously the rat and the cat.
The main characters are surely the rat catcher and the children. The rat catcher could be a gruff but kind - hearted man who has been in the business of catching rats for a long time. The children might be from different families in a small town or village. They could include a leader - like child who tries to organize the others when they interact with the rat catcher, a mischievous child who might play pranks related to the rat - catching activities, and a sensitive child who feels sorry for the rats but also understands the need to get rid of them.
Obviously, the central figure in the conceited little rat story is the little rat itself which is conceited. There might not be other clearly defined main characters mentioned, as the focus is on the rat's conceit and whatever events unfold around it because of that trait.