Since I don't know the exact story, I can't say for sure. But it's likely that the main characters are the children themselves, whoever they may be.
I'm not sure specifically as it could be a rather unique or not widely known story. It might be about children who have some sort of connection to a fence, perhaps they play near it, or it could be a symbolic fence in their lives.
In the boy and the fence story, clearly the boy is one of the main characters as the story seems to revolve around his actions regarding the fence. And the other main character would be the owner of the fence. The owner is important because it's their fence that the boy has some sort of encounter with, whether it's accidentally breaking it or something else. Without the owner, there would be no conflict or story really, as it's the boy's relationship with the owner's fence that drives the narrative.
Since we know so little about 'the fence short story', it's difficult to determine the main characters precisely. However, it's possible that there is a character who views the fence as a symbol of something important in their life. Maybe it's a child who sees the fence as a boundary to their freedom, or an old person who sees it as a mark of the past and the things they've protected over the years.
Molly is a very strong - willed girl. She is the leader among the three girls and is determined to escape and find their way back home. She uses her knowledge of the land and her wits to lead them along the rabbit - proof fence. Daisy is younger and more vulnerable, but she also shows great courage in following Molly. Gracie is another one of the girls, and they all rely on each other during their arduous journey.
Obviously, the boy is the main character as it's named the 'boy and fence story'.
Well, it might be about boundaries. The fence could symbolize the limits that people set in relationships, whether it's physical or emotional. For example, it could show how a character is trapped within certain boundaries created by the fence.
It depends on the specific 'for the children story'. It could be a brave little boy or a kind - hearted girl.
Perhaps there is a lonely child who then meets some magical creatures. These magical creatures become his or her new friends. The child and the magical friends then have a series of interesting interactions that drive the story forward.
The main characters are the three Aboriginal girls, Molly, Daisy, and Gracie. Molly is the eldest and the most determined. She leads the way in their escape and journey along the fence.
The four children of Lir are the central characters as they are the ones whose fates are changed. And their stepmother is also a key character as she is the one who uses magic to turn the children into swans out of jealousy or other motives.