On the other hand, Stiles is also known for his quick thinking. He might start to try and bargain with Peter. He could offer to help Peter in some way if Peter lets him go. For example, if there's a problem in the supernatural community that Peter is facing, Stiles could say he'll use his human ingenuity to solve it. Also, Stiles could be angry. He might start shouting at Peter, calling him out on his actions, and trying to make Peter see how wrong this is.
Stiles usually reacts with a mix of fear and defiance. He's afraid because he's in a dangerous situation, but his strong - willed nature makes him defiant. For example, in many fanfictions, he'll shout at Peter, trying to show that he won't be easily broken.
The more diplomatic characters like Carlisle from the Cullens might try to initiate a peaceful conversation with the Mikaelsons. However, the Mikaelsons' complex family dynamics could make it difficult. Klaus might overrule any attempts at peace if he feels his family's power is being challenged. He could see Carlisle's niceness as a sign of weakness. Meanwhile, the younger Cullens like Alice might be curious about the Mikaelsons' abilities and history, which could either lead to friendship or more tension depending on how the Mikaelsons respond.
In a scenario where the Mikaelsons meet the Cullens, there could be some interesting alliances or rivalries. Maybe some of the younger members from both families might be intrigued by each other. For example, Klaus from the Mikaelsons and Edward from the Cullens could have a very tense relationship. Klaus is all about power and dominance, while Edward is more focused on protecting his family and Bella. Their different priorities could lead to some intense confrontations.
Stiles might initially be shocked. He has been a part of the pack for a long time, and Scott kicking him out would be completely unexpected. He could stand there in disbelief, unable to process what has just happened.
Some of his friends might be really surprised. Scott, for example, might be a bit worried that Stiles' vampire obsession could lead him into dangerous situations. Lydia, on the other hand, could be more intrigued and might want to know more about the fanfiction. She might see it as an interesting intellectual pursuit.
Well, of course, Bella is a main character. She is the one that bridges the gap between her own world and that of the Mikaelsons. Among the Mikaelsons, Klaus stands out as a main character as his actions and decisions often drive the plot. Elijah is also crucial as he is often the voice of reason within the family. And Rebekah, with her feisty and determined personality, is an important part of the story too. There may be other Mikaelson siblings involved as well, but these are some of the main ones in relation to Bella in the fanfiction.
Derek could be initially hesitant. He has his own past traumas and might worry about how he could be a part of the child's life. However, as he sees Stiles struggling to handle it all alone, his feelings for Stiles would push him to become more involved. He would start to see the son as a new beginning, a chance to build a family in a way he never thought possible before. He'd offer his werewolf skills to keep the child safe and teach him about the supernatural world if needed.
Some members of the pack might be angry at first. They could see his leaving as a betrayal, especially if they are in the middle of a difficult situation and rely on him in some way.
Scott would be extremely worried and immediately start planning a rescue mission. He'd be angry at Theo for targeting Stiles and would use his alpha powers to try and track him down. He might also call on the rest of the pack for help, like Lydia, who could use her banshee powers to sense if Stiles was in danger or where he might be.