Perhaps a new character could be introduced as the hero. A wizard or a powerful human with some extraordinary skills. This new character could be someone who has been observing Peter's actions from afar and decides to step in to save Bella when the time is right.
In some 'Peter kidnaps Bella fanfiction', it could be that Peter is actually in love with Bella but in a very twisted way. So he kidnaps her to have her all to himself. Bella initially hates him but as time passes, she starts to understand his troubled past that led him to this extreme behavior.
Maybe Peter has some hidden motives. It could be related to a power struggle within the fanfiction's world. Perhaps he wants to use Bella as a bargaining chip against someone else.
Peter would probably be scared at first. He's just a kid, after all, and being kidnapped by a powerful being like Thanos is terrifying. But he would also be defiant. He has a strong sense of responsibility, so he might try to find a way to escape on his own.
Bella might initially be terrified. She is a human being kidnapped by a vampire, after all. She could struggle and try to escape, using her wits and any available resources. However, since she has feelings for Edward in the original story, part of her might also be conflicted, wondering if there is a good reason behind his actions.
One possibility is that Wade has some sort of misunderstanding. Maybe he thinks Peter is in danger from some other villains and kidnaps him to keep him safe. He might take Peter to a secret hideout where Peter initially struggles but then realizes Wade's intentions are not entirely malicious.
In a fanfiction sense, Tony might kidnap Peter due to a misunderstanding. For example, if Peter was involved in some sort of experiment that Tony misinterprets as dangerous. He could be worried that Peter is being influenced by the wrong people or powers, so he kidnaps him to figure out what's really going on. Tony's actions, although extreme, could be driven by his love and concern for Peter as a mentor.
Well, clearly Bella is one of the main characters. She's the one who gets kidnapped. And then, of course, the members of the pack are main characters too. We might have characters like Jacob, who is an important figure in the pack. There could also be other unnamed or less well - known pack members who play significant roles in the kidnapping and what happens afterwards.
In the fanfiction, Bella might be changed by Peter in various ways. It could be a change in her personality. For example, if Peter has a very positive and confident attitude, Bella could become more self - assured under his influence. Maybe he encourages her to pursue her dreams more actively, and she starts to take risks she wouldn't have before.