In kidnapped Peter Parker fanfiction, the Kingpin is very likely to be a kidnapper. He has the resources and the power to organize such a thing. He might want to use Peter to gain an edge in his criminal activities or to send a message to other superheroes. Electro could also be a kidnapper. He could use his powers to abduct Peter and then try to drain his powers or something similar. And don't forget about Mysterio. He could stage a fake kidnapping but then it turns into a real and dangerous situation for Peter.
The Green Goblin is a likely kidnapper. He's always had a vendetta against Spider - Man. Also, Doctor Octopus could be a candidate. His mechanical arms and his intelligence make him a formidable foe who might kidnap Peter for his own devious experiments. Another one could be the Vulture, who might see Peter as a valuable asset to sell to the highest bidder in the criminal underworld.
Well, Kraven the Hunter is a very possible kidnapper. He loves the hunt and Peter would be the ultimate prey for him. He might want to prove that he can capture and defeat Spider - Man. Shocker is also a likely candidate. His vibro - shock gauntlets could be used to subdue Peter and kidnap him. There's also the possibility of a new villain created specifically for the fanfiction, someone who has a personal grudge against Peter for some reason, like a scientist whose experiment Peter accidentally ruined and now wants revenge by kidnapping him.
Chapter 528, "Cursed", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. The chapter turns that into something concrete by moving from The netizens almost unanimously started to sympathize with Jiang...
Chapter 325, "Miss Jiang, What Do You Think?", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. It opens with Xiao Yu cleared his throat and said, "So, Miss Jiang, our interview...
Chapter 476, "Make a feint to the east but attack in the west, take something out of a bag effortlessly", is the clearest early answer because Jiang Yan gets a payoff that changes the stakes. It opens with A long half hour had passed, yet their trap hadn't even attracted a...
Chapter 741, "As for blocking someone's house?", is the clearest early answer because it turns Fang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with In the scuffle, Qi Tianyu finally noticed Fang Kai skulking around in...
Chapter 710, "Handsome, Who Are You?", is the clearest early answer because it turns Jiang Yu's situation into a concrete plot event. Early on, The man was wearing the white cotton attire of a beauty salon, the.... By the end, Wuu wuu wuu, she had actually bullied Jiang Li before, bullied her....
Chapter 607, "Confrontation Head-On", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter gives readers a real answer by opening on Several boats hadn't yet crossed when they were directly capsized.
Chapter 372, "Finish the Wine and I’ll Let You Leave", is the clearest early answer because it turns Gifted's situation into a concrete plot event. It opens with Jin Si Yue suddenly realized that his wrist was back in proper...
Chapter 447, "Going Viral on the Internet", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. Early on, Old Sir Jiang: "...." His face had grown even worse.. By the end, She quickly grabbed He Wen's laptop and indeed saw that the various....
Chapter 793, "Back After Many Years, with a Son", is the clearest early answer because it turns Jiang's situation into a concrete plot event. It opens with [????] [?????????] [??????????] With Jiang Mingyu's voice coming...
If you want the clearest chapter reference, go to Chapter 1. Early on, Jiang Li, I'm warning you, don't set your sights on Yinwan anymore, or...; later, the chapter leans on Following a bout of tinnitus, she struggled to open her eyes and finally....