As I don't know the particular 'little boy short story', it could have the little boy as the main character, of course. Maybe his parents or a best friend could also be main characters, depending on the story's focus.
In this mystery 'little boy short story', if it's a story about the boy's school life, his teacher could be one of the main characters. Also, if there is a pet in the story, like a dog that follows the boy everywhere, the dog would be an important character too. It all depends on the nature of the story.
The main character is the ugly little boy. He is at the center of the story. There could be a teacher in the story who plays an important role. Maybe the teacher encourages him or helps him deal with the difficulties he faces because of his appearance. Also, there could be a bully character who makes his life hard at first.
The main characters are, as the title suggests, the old man and the little boy.
In this unknown 'the little boy story', aside from the little boy, there could be a wise old man in the neighborhood. The old man might act as a mentor to the boy, guiding him with valuable advice through different situations in the story.
The main characters are obviously the little boy and the little cat.
Obviously, the main characters are the ghost and the little boy. There might be other supporting characters like the boy's parents who are unaware of the ghost's presence at first, or maybe an old hermit who knows a lot about ghosts and gives the boy some advice on how to deal with his new spectral friend.
The main characters are the little drummer boy and Jesus. The drummer boy is the protagonist who goes on this journey of presenting his gift. Jesus is the recipient of his gift, even as a baby. There may be other minor characters like the people around the stable or the drummer boy's family who might be implied in the story but are not as central as these two.
In a 'little boy on a mission story', the main character is the boy himself. He could be joined by other characters. For example, if his mission is related to a school project, his teacher could be an important character who gives him guidance. Or if he is on a mission to rescue a pet, there could be other animal - loving friends who join him. There might also be a wise old man in the neighborhood who imparts some crucial wisdom to the boy to help him on his mission.
The main characters are the little wooden boy, usually Pinocchio, and Geppetto, who creates him.
Most likely the little scarecrow boy himself is a main character. There could also be the farmers who made him. And perhaps the birds or pests that he is supposed to scare away are also important characters in the story.
The main characters in this story are the little gingerbread boy, who is the focus as he runs away from everyone. There's also an old couple, usually an old man and an old woman. They are the ones who bake the gingerbread boy. And the fox, which is a very important character. The fox is cunning and manages to trick the gingerbread boy. The gingerbread boy is full of energy and pride, the old couple are the originators of the gingerbread boy, and the fox is the one who brings the story to its conclusion by catching the gingerbread boy.