There's no way to be certain without more details about the 'diaper boy story'. However, it's safe to assume that the diaper - wearing boy is one of the main characters. There could be friends in the story, like other children who either tease him or support him because of his diaper - wearing. Or there could be a mentor - like figure, such as an older relative who gives advice on growing out of the diaper - wearing stage.
The main character is likely the boy in the 'diaper boy story'. But there could be other important characters too. For instance, if it's a story about a boy at a daycare, there could be the daycare workers who take care of his diaper - changing needs. Or if it's a more imaginative story, there could be a magical creature that interacts with the boy while he has his diaper on.
Since I don't know the exact 'diaper boy story', it could be the boy himself as the main character. There might also be his parents or caregivers if the story focuses on his family situation.
Since I don't know the details of the story, I can't say for sure. But it might be the diaper - wearing boy himself as a main character. There could also be a camp counselor or a fellow camper who plays an important role.
Since I don't know the exact story, the main characters could be the diaper boy himself, obviously. And probably the daycare workers who take care of him.
Since I don't know the exact story, it could be the diaper boy (shota) himself as the main character. There might also be his family members, like his parents or siblings, who play important roles in his life related to the diaper situation.
In typical 'DeviantArt Diaper Boy Story', the main character is the diaper - wearing boy for sure. Besides him, there could be a wise old man or woman who serves as a guide. Maybe there's a group of friends, some of whom are accepting of his diaper - wearing while others are not. These friends can add drama and conflict to the story. There could also be a villain who tries to take advantage of the boy's unique situation with the diaper.
The boy in the diaper and onesie would be the central figure. There could also be a pet in the story, like a dog or a cat, that is curious about the boy's diaper and onesie. The pet could be another important character, adding some fun and chaos to the story as it tries to play with the boy's diaper or chew on the onesie.
Well, a doctor could be an important character. If the diaper regression has a medical or psychological cause, the doctor would be involved in diagnosing and perhaps treating the boy. Also, a sibling could be a main character. Siblings often have a complex relationship, and in this story, the sibling might feel embarrassed, protective, or just plain confused about the boy's situation.
Since I don't know the details of 'the diaper school story', I can't say for sure who the main characters are. It could be the children in the school, or the teachers who take care of them.
In the 'diaper days story', the main characters may include the infant who is in the diaper - wearing phase. This little one could be the focus, with their actions and reactions being central to the story. Additionally, if it's a more complex story, it could feature pediatricians or nurses who are involved in the baby's health during these diaper days. They could provide advice on diaper use, dealing with any potential health issues related to diaper - wearing, and so on.
His friends are also typical characters. Some friends might be accepting and stand by him, while others could bully him or make fun of him because of his situation. There could also be a teacher or a mentor figure in the story. This person might notice the boy's struggles and offer some guidance or support.
I don't know who created the'sissy diaper boy story'. It could be an individual writer, or it might be a story that has been passed around in a particular community or online group.