There could be a character who is an outcast in the story. This character might be associated with the black ball as it represents their status in society. And perhaps there's a character who is trying to help this outcast, a friend or a family member, and their relationship is explored in the context of the black ball.
I don't know as the details of 'the black ball story' are not provided. It could be a young boy as the main character if it's a coming - of - age story where the black ball is a discovery that changes his life. Maybe there's an old wizard who gives the black ball its special powers, if it's a fantasy story.
Since I don't know the details of the 'Black Ball' short story, it's hard to say exactly. However, it's common for there to be a character who is affected by the black ball in a profound way. There might also be antagonists who want to use the black ball for their own evil purposes, or perhaps other characters who are just witnesses to the events surrounding the black ball.
Vegeta could also be a main character. He's Goku's rival and often teams up with him to face powerful enemies. Maybe in this 'Black Story', Vegeta has some new development in his power or character arc related to the 'Black' aspect of the story.
I'm not sure specifically as I haven't read the exact 'after the ball short story'. But typically in such a story, there could be a young protagonist, perhaps a man or a woman who attends the ball and whose experiences form the core of the story. There might also be a love interest.
Goku is definitely one of the main characters. He's the hero of the Dragon Ball series and is likely to play a crucial role in the short story as well.
Since I don't know the specific 'ball hawk short story', it's hard to say. But it could be the ball hawk himself/herself as the main character. There might also be coaches or teammates if it's a sports - related story.
The main theme could be about struggle and discrimination. In many stories, a black ball can symbolize something negative or excluded, perhaps representing a character's battle against prejudice in a society.
I'm not entirely sure as the specific details of the 'The Black Telephone' short story are not fully known to me. But typically in such stories, there could be a protagonist who is the main character affected by the black telephone. There might also be some secondary characters like a family member or a neighbor who either helps or hinders the protagonist in dealing with the situation related to the phone.
The boy who is abducted is the primary character. He is in a fight for his life and sanity. The kidnapper is another key character. He is the source of all the fear and danger in the story. While we may not know much about the kidnapper's backstory, his actions and the threat he poses to the boy are what shape the story. There could also potentially be family members of the boy that are indirectly part of the story through the boy's thoughts and memories.
Perhaps a group of rebels. They might be fighting against an oppressive force that rules the black city, adding an element of conflict to the story.