I don't know as there's no information given. It could be ordinary people or even animals.
Without more context, it's hard to say. It could be a story about a single person like a farmer who wakes up early to tend to his fields as the day comes. Or it could have multiple characters, such as a family where each member has their own role in starting the day. Maybe there are some magical creatures in the story that only come out during the day, like little day - flying fairies.
I'm not sure specifically as there's not much information. It could be about a new beginning or something that happens during the day.
I'm not sure as I haven't read the specific story, but it could be a single protagonist, perhaps a person who has been out working all day and is now coming home in the dark.
Since I don't know the details of the 'big rain coming story', I can't say for sure who the main characters are. They could be ordinary people like a family preparing for the rain.
In this short story, the king is probably a main character. But there might also be a love interest, perhaps a princess from the land the king is coming to. There could be a villain too, someone who wants to stop the king from coming for their own malicious reasons. And don't forget about the ordinary people. Their collective reaction and their individual stories could also be important parts of the narrative, as they are the ones most affected by the king's coming.
The main characters in the 'wolf is coming' short story are the shepherd boy, the group of villagers, and the wolf. The shepherd boy is the one who sets the events in motion by crying out about the wolf. The villagers are the ones who respond (or don't respond) to the boy's calls. And the wolf is the source of the potential danger to the sheep. These characters together create the story's plot about false alarms and the consequences of lying.
The king himself is surely an important character. His actions and decisions drive the story forward.
I'm not sure without reading the story, but there must be the day dreamer at least.
I don't know the 'day 9 story', so I can't tell who the main characters are.
I don't know the 'the hot day story' well enough to tell who the characters are. It could be ordinary people, like a family trying to get through a hot day.
I'm afraid I can't tell exactly who the characters in 'the rainy day story' are. But it's common in such stories to have characters like a person who is caught in the rain without an umbrella, and perhaps there could be a kind stranger who offers help. There might also be a family at home, with a father, mother, and children, and the story could show how they interact on this rainy day, like the children getting excited to play in the puddles while the parents worry about them getting wet and cold.