The girl could be a shy girl named Ella who is forced to go to the boy camp because her parents think it will make her more confident. The main boy character could be Leo, a popular and athletic boy at the camp. He helps Ella come out of her shell and they both have a lot of adventures together in the camp.
The main character could be a tomboyish girl named Lily. She's always been interested in things that boys usually like, so she's excited to be in the boy camp. And then there could be a boy named Jake, who is initially suspicious of Lily but later becomes her best friend.
The main characters could be a nerdy 'cherry boy' who is always buried in his books and a sporty girl. The boy might be really smart in academics but lacks social skills. The girl, on the other hand, is confident on the sports field but not so good in studies. They could help each other out, with the boy tutoring the girl and the girl teaching the boy how to be more confident in social situations.
Obviously, the new girl would be a main character. She could be someone with an unknown parentage at first, like many demigods. Another main character could be the camp director, who would be guiding her and trying to keep her safe. There might also be a friendly camper, like a son or daughter of Hermes, who takes the new girl under their wing and shows her around the camp.
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.
Obviously, the core Avengers like Iron Man, Captain America, Thor, and Hulk could be the main characters. They are the most well - known and would bring their unique personalities to the camp setting.
The main characters could be a high - school girl and boy. The girl might be a popular one who likes to bully the less popular boy.
The girl could be a young athlete and the boy could be her rival in a sports event. She has more determination and thus beats him.
It could be that the girl is a young scientist who accidentally creates a device that inflates the boy while she was conducting an experiment. In this case, the boy could be her assistant or just an unlucky bystander. And they both have to figure out how to fix the situation.
The main character would obviously be the boy. He could be a curious and adventurous kid who is open to new experiences, which is why he might be able to handle being in a girls' camp.
Well, Cyborg could also be a main character. He and Beast Boy are good friends, and Cyborg might have to adjust to his friend's new appearance and the changes that come with it. And then there's Robin. As the leader, he would need to deal with how Beast Boy's transformation affects the team dynamics. Maybe he has to figure out new strategies that take into account Beast Boy's new situation.
Well, clearly the main characters are balloon boy and balloon girl. Balloon boy is often depicted as a curious and adventurous character. He might be the one to initiate most of the exploration in the stories.