The primary character is Lazy Jack. He is likely to interact with other characters in the story. For instance, he could have a mother or father figure who tries to encourage him to be more industrious. There may also be neighbors or other people in the village (if it's set in a village) that he comes across during his lazy escapades.
I'm not sure as you haven't given the details of the story, but most likely there is the lazy man himself as the main character.
I'm not sure exactly as I haven't read the specific 'the lazy river short story', but it could be a young adventurer. Someone who is drawn to the lazy river to explore and find new experiences.
Not having read the 'lazy susan short story', it's hard to determine. But if it's a story about Lazy Susan, she's the main one for sure. There might be a sidekick character who helps her in her journey or a antagonist who creates problems for her.
The main character is the lazy boy. Besides, there could be his teachers if the story is set in a school - like his teacher who tries to get him to do his work. And perhaps his friends who might either encourage his laziness or try to change him.
The main character is surely Jack Frost. In some versions of the short story, there could be a human protagonist, perhaps a young girl or boy who ventures out into the snow and encounters Jack Frost. There might also be an old wise man or woman who knows the secrets about Jack Frost and tries to guide others in dealing with him.
The main characters are Jack and the giant. Jack is a young boy who is brave and a bit mischievous as he dares to steal from the giant. The giant is a huge, menacing figure who lives in the castle in the sky and tries to stop Jack from taking his treasures.
The main characters in the 'jack and jill short story' are Jack and Jill, of course. They are the two kids who go on the adventure of climbing the hill to get water.
The main characters are Jack, Jack's mother and the giant.
As I said before, not knowing the specific 'jack in the box short story', it's hard to say. But most likely, Jack is a main character since he is in the title and associated with the box.
In the 'lazy boy lazy john short story', their main trait is laziness for sure. They might be the type of characters who always look for shortcuts or ways to avoid tasks. They could be seen as unmotivated and perhaps a bit self - indulgent. For example, if there is a job to be done like fixing a fence, they would rather sit and watch than pick up a tool. Their laziness might also lead to some comical situations in the story, like when others are depending on them to do something and they just don't.