One common plot twist is that the kidnappers turn out to be working for a more powerful villain who has a personal vendetta against Izuku. Another could be that Izuku's friends think he's been kidnapped by one group, but it's actually another. For example, they might suspect a rival hero school, but it's a secret underground organization.
One common plot twist could be that the kidnapper turns out to be someone Hiccup thought was a friend all along. This adds an element of betrayal and shock to the story.
A plot twist might be that Sokka's kidnapping was part of a bigger plan to draw out other important characters. For example, his friends come to rescue him and end up walking into a trap set by the kidnappers.
One common plot twist could be that the kidnapped person discovers they have a special power or connection to the vampire world that the vampire didn't expect. For example, they might be able to resist the vampire's mind - control powers more than others. Another twist could be that the vampire who kidnapped them is actually being controlled by a more powerful and evil entity. So, instead of being the main villain, the kidnapping vampire becomes an ally later on. And sometimes, the kidnapped person turns out to be a long - lost relative of the vampire, which completely changes the dynamic between them.
One common plot twist could be that the kidnapper is someone they least expect, like a close acquaintance with a hidden agenda. Another might be that Bughead discovers a secret about their captors during the kidnapping that changes the whole situation.
One common plot twist could be that the kidnapper is actually someone close to Adrien, like a jealous acquaintance who wants to get back at him for some perceived slight. Another might be that Adrien has a secret power or connection that the kidnappers are trying to exploit. Maybe he has a hidden family heirloom that they think is valuable.
Well, sometimes in these types of fanfictions, a plot twist can be that Stiles finds out Gerard is related to him in some unexpected way. This could completely change the dynamic of their relationship. Maybe Gerard is his long - lost relative, and this revelation makes Gerard have second thoughts about his actions. Or, there could be a plot twist where the place where Stiles is kidnapped has some sort of magical property that either aids or hinders his escape. For instance, it could be a place that nullifies certain supernatural powers, making it more difficult for Stiles to use his usual means of getting out of trouble.
One common plot twist could be that Sasuke actually planned to be 'kidnapped' to some extent. He might have wanted to gain power from Orochimaru in a more secretive way. Another could be that Naruto and his friends discover Orochimaru's lair much sooner than expected, leading to a premature rescue attempt. And sometimes, Orochimaru may not be the real mastermind behind the kidnapping, but rather a pawn of a more powerful enemy.
One common plot twist could be that Koga actually kidnapped Kagome to protect her from a greater threat. Maybe there's a powerful demon that's after Kagome, and Koga, despite his rough ways, believes he can keep her safe. Another twist might be that Kagome discovers she has some hidden power while in Koga's captivity that helps her either escape or gain an understanding of the demon world in a new way.
Well, sometimes in princess kidnapped fanfiction, a plot twist is that the princess was kidnapped as part of a political scheme by her own family members. They might be trying to gain power or start a war. Also, the princess could find out that she has a long - lost twin during the kidnapping ordeal. And then there's the twist where the place she's being held is actually a portal to another world, and she has to figure out how to get back home from there.
A common plot twist could be that the kidnapper is actually someone the victim thought was a friend. For example, a fellow trainer who seems friendly but has a hidden agenda. Another twist could be that the kidnapped Pokémon or character has a special power that the kidnappers didn't expect, which helps in their escape or rescue. For instance, a Pokémon that can turn invisible at will.