Stiles is the key character here. He's the one through whose perspective we usually experience the story. In the pack, Scott is a must - he's the werewolf who has a long - standing friendship with Stiles. Derek, with his alpha - like presence, also plays a major role. Additionally, characters like Allison, who has her own arc related to the supernatural world, could be part of the main cast as well. They all interact with Stiles in different ways when he meets the pack.
Well, obviously Stiles is one of the main characters. He's the one being hurt by the pack. The members of the pack would also be main characters, though we don't know exactly which ones without more context. It could be Scott, as he's often a central figure in the pack. There might also be other characters like Derek who could be involved in either causing the hurt or helping Stiles deal with it.
The main character is definitely Stiles. He is the focus as he is the one who ends up crying. As for the pack, it could be a group of various characters. They might be friends or allies of Stiles in the original story but in this fanfiction, they are the ones causing his distress. For example, it could be a werewolf pack with characters like Scott, Derek, etc., if it's related to Teen Wolf.
There could be other members of Peter's pack such as Derek. Derek often plays an important role in stories related to packs. He might be initially skeptical of Stiles being part of the pack.
The main characters are Stiles and the Cullens. Stiles is known for his ability to adapt in strange situations. When he meets the Cullens, their interactions will be centered around how they deal with each other's differences. The Cullens' vampiric abilities and Stiles' human (or whatever he is in his original context) nature will play a big part in their relationships in the fanfiction.
There could also be other characters from either Stiles' world or the Winchesters' world that make appearances. For example, in Stiles' world, there might be his friends like Scott who could be mentioned or even play a small part in the story. And from the Winchesters' side, characters like Castiel could potentially show up and interact with Stiles in some really interesting ways.
Well, aside from Stiles, Scott is bound to be a central character. Their friendship is so strong that Scott would immediately start looking for ways to rescue Stiles. Derek Hale is another likely character. Given his past with the alpha pack and his relationship with Scott and Stiles, he would have a role to play. Then there's Allison. Her family's history with the supernatural means she has skills and knowledge that could be useful in rescuing Stiles. She could be involved in the search and rescue operation, using her archery skills and knowledge of the supernatural world to help out.
Scott would be the most likely one. He's Stiles' best friend and the True Alpha. He would never let the Alpha pack harm Stiles and would go to great lengths to rescue him.
One interesting plotline could be Stiles initially being intimidated by the pack but then gradually forming deep friendships. For example, he might start off being scared of their supernatural powers but as he gets to know them better, he realizes they are just like him in many ways, with their own insecurities and desires.
Obviously, Stiles and members of the Hale family are the main characters. Stiles, with his quick thinking and sarcastic humor. And the Hale family members, like Derek Hale, who is often portrayed as brooding and strong, and other family members with their own unique personalities and supernatural abilities.
In some fanfictions, the pack meeting Stiles' family could lead to a lot of chaos at first. The pack has their own supernatural quirks, and Stiles' family might be shocked or confused. For example, they could mistake some of the pack's abilities for magic tricks at first. But eventually, they might come to accept the pack and see them as an extension of Stiles' life, leading to a big family - like bond.