Another option for the hero could be a mysterious figure who has a vendetta against imprijt. They see the kidnapping as an opportunity to finally take down imprijt. This figure could have special powers or abilities that give them an edge in the fight against imprijt to rescue the victim.
Perhaps in this 'imprijt kidnapped fanfiction', the kidnapped person is a key figure in a grander scheme. Imprijt kidnaps them to use as a bargaining chip against their friends or allies. The friends then embark on a rescue mission filled with various challenges and unexpected twists.
It could be Alan Breck Stewart. He plays a significant role and shows bravery and determination throughout the story.
A young and determined trainer could be the hero. They have a strong bond with their Pokemon and when their Pokemon are kidnapped, they are furious and won't stop until they get them back.
It could be a group of villains working together. For example, the League of Villains might decide to kidnap Deku. They might want to use him as a bargaining chip against the heroes. Or it could be a rogue hero who has turned to the dark side. This hero might think that Deku is getting too much attention and kidnaps him to take his place in the spotlight.
The healer themselves would obviously be a main character. They could be a young and inexperienced healer, full of enthusiasm but also a bit naive. This would make for an interesting character arc as they grow and learn throughout the story.
Well, in a Deku kidnapped fanfiction, perhaps an anti - hero group kidnaps him. They might see Deku as a symbol of the hero system they oppose. They could hold him hostage to make demands on the hero society, like changes in how heroes are regulated. Or it could be a rival from his school days who is jealous of Deku's success and kidnaps him out of envy.
It could be an old enemy of Keith's, someone from his past who has a vendetta against him. Maybe a former rival from his days in the military academy who has now turned to more devious means.
In some creative fanfiction, it could be an alternate version of Spiderman himself from a different dimension. This Spiderman has gone bad and kidnaps a fan from our dimension as part of some grand, dark plan that involves crossing dimensions and causing chaos.
A power - hungry nobleman from a neighboring land could be the kidnapper. He might believe that by having Rapunzel in his possession, he can gain some sort of political advantage or use her as a bargaining chip against her kingdom.
It could be Orochimaru. He's always been interested in obtaining powerful individuals for his experiments, and Naruko with her unique abilities would be a prime target.