Sometimes Caillou's friends from the show can also make an appearance in the fanfiction. For example, they might come over to visit while Caillou is grounded and have to abide by the rules of his punishment, which can lead to some interesting interactions.
His sister Rosie is often in these fanfictions too. She might be involved in the situations that lead to Caillou getting grounded, like when he takes her things without asking and then gets punished.
Well, of course, Caillou himself is the central character. His parents also play important roles as they are the ones who ground him and teach him lessons.
Maybe in the fanfiction, Caillou gets grounded for breaking his sister's favorite toy. He then spends his time grounded trying to fix it as a way to make amends, which shows his growth in taking responsibility for his actions.
Obviously, Harry Potter himself is the central character. His friends like Ron Weasley and Hermione Granger are also often involved. They might try to visit him while he's grounded or come up with plans to get him out of being grounded. Dumbledore could also play a role, either as the one who enforces the grounding in some cases or as the one who might offer some wisdom to Harry during his time of confinement.
Obviously, Seto himself would be the main character. He is the one who is getting grounded, so the whole story would revolve around him. His family members could also be important characters. For example, his parents or guardians who are the ones grounding him. They would play a role in setting the rules and enforcing the grounding. His friends might also be characters in the story. They could come to visit him while he is grounded or try to convince his guardians to let him go early.
The main character is Angelica. Then there are her parents, who play a crucial role in grounding her. Additionally, Susie could be a character in this fanfiction. She might be the 'good girl' contrast to Angelica. When Angelica is grounded, Susie could be having a great time with the other kids, which would make Angelica even more jealous and regretful of her actions that got her grounded.
A common theme is Arthur learning a lesson. When he gets grounded, it's usually because he did something wrong, like lying or being disobedient. Through the experience of being grounded, he grows as a character.
Dumbledore can also be a significant character. He might be the one who decides Harry's punishment or he could be the one to offer some wisdom to Harry during his time of being grounded. And of course, the teachers like Snape or McGonagall could be involved as they are often the ones who enforce the rules and punishments at Hogwarts.
A 'trunks gets grounded fanfiction' might explore various aspects. It could be about Trunks, a character from a particular series, getting punished by being grounded. This could lead to different scenarios such as how he copes with the restrictions, his relationships with other characters during this time, and his internal thoughts and growth. Maybe it shows his struggle between his normal adventurous self and the confined situation he's in now.
The most interesting part could be Trunks' attempts to break the rules of his grounding in a clever way. He might use his unique skills or intelligence to find loopholes.
Perhaps Seto got into a fight with a powerful enemy and in the process, he put others in danger. His guardians or the people in charge decide to ground him to teach him a lesson about responsibility. During his grounding, he could start to reflect on his actions and come up with new strategies to face his enemies. He might also discover new things about himself while being alone in his grounded state.
Hermione is a very common character. Given her intelligence and magical skills, she often plays a crucial role in saving Harry. Ron is also often involved as Harry's loyal friend. Dumbledore, even in fanfiction, is a character who might show up to save Harry or at least guide the others in the rescue.