Well, obviously Rachel Berry and Sunshine. But also, other members of the glee club could be involved. For instance, Finn might try to defend Rachel, thinking she's innocent. Or Santana could be there, making sarcastic comments about the whole situation. Kurt might also be involved, perhaps using his connections to try and get Rachel out of jail. And of course, the adults in the story like Mr. Schuester could play a role. He might be shocked at first but then start to investigate to prove Rachel's innocence.
Perhaps in the story, there was a misunderstanding about Sunshine's disappearance or harm. The authorities thought Rachel had something to do with it. Maybe Sunshine was missing before an important event and Rachel was the last person seen with her. The police misinterpreted the situation and arrested Rachel, even though she was innocent and was actually just helping Sunshine with some personal issues.
It could be an overzealous security guard. If Rachel was at a high - profile event and the security guard misinterpreted her actions as something threatening or against the rules, he could be the one to call the cops and get her arrested.
Perhaps in the fanfiction, Rachel is wrongly accused of stealing a valuable prop from the theater. She was just borrowing it for inspiration but there's a misunderstanding and she ends up getting arrested. Then she has to fight to prove her innocence.
Finn could be involved if the fanfiction wants to explore a relationship with him as the possible father. He was an important part of Rachel's life in the original series, and his reaction to the news would be significant.
Finn is very likely to be involved. If he's the father, he would have a huge role in the story. He'd need to deal with his own feelings about becoming a father so young and how it affects his football and Glee club activities. Quinn could also be involved. She might offer Rachel advice based on her own experience with pregnancy, even though their situations were different. And of course, Mr. Schuester would be there. He'd be like a mentor to Rachel, guiding her through the tough times and making sure she still has a place in the Glee club.
It could lead to a major shift in the story and dynamics among the characters. Maybe the other characters would struggle to cope with the loss and it could change the entire tone of the fanfiction.
There could be new characters introduced as well. For example, an old wizard or witch who has knowledge about the specific creature inheritance Harry has. They could be a mentor figure, teaching Harry how to control and use his newfound abilities. And of course, the antagonists like Voldemort would be affected by Harry's new powers. They might try to find a way to counter or steal Harry's creature inheritance powers.
There could be a rival within the family. Someone who wants Percy out of the way, perhaps for inheritance reasons or because they're jealous of Percy's abilities or popularity. This rival could be the one who instigates the events that lead to Percy's disownment. And then there might be a mentor - like figure outside of the family who takes Percy in after he's disowned and helps him to grow and face his new situation.
Mr. Schuester might be included as well. As the teacher and mentor in the Glee club, he could offer guidance to Rachel during this difficult time. He might help her figure out how to balance school, the Glee club, and her pregnancy. Additionally, Mercedes could be a character involved, providing her best - friend - like support to Rachel, and being there for her through all the emotional ups and downs.
There are probably 'Rachel Berry fanfiction' stories that focus on her relationships. For example, a story could explore her relationship with Finn in an alternate universe where things turned out differently. It could show how they might have overcome more challenges together and grown even closer.