In some fanfictions, sans might be made to kidnap for various reasons. One could be that he's misinterpreted a situation. Maybe he thinks the kidnapped person has some crucial information that could save his world or his friends. Another reason could be that he's been corrupted in some way, perhaps by an external evil force that's manipulating his actions.
Well, it could be due to a misunderstanding. He might believe the character he kidnaps is a threat to someone he cares about. For example, if there are rumors or false information floating around in the fanfiction world that the person is going to harm Papyrus. So, in his attempt to protect his brother, he kidnaps the 'threat' without fully realizing the truth.
One possible reason could be for some sort of experiment. Gaster is often depicted as a mysterious scientist in the Undertale lore, and Sans has unique abilities. Maybe Gaster wants to study Sans' power over time and space. Another reason could be related to secrets. Sans might know something about Gaster's past or the true nature of the Underground that Gaster wants to keep hidden, so he kidnaps Sans to prevent him from revealing it.
One possible reason could be revenge. Maybe someone has a grudge against the Rifleman and decides to target his son Mark. Another reason might be for ransom. The kidnappers could think that the Rifleman, being a well - known figure, would pay a large sum to get his son back.
One possible reason could be for attention. Maybe she felt ignored in her daily life and thought that creating such a dramatic story would make people focus on her.
One possible reason could be that Esmeraude wants to use Haruka as a bargaining chip. Maybe she plans to exchange Haruka for something valuable, like a powerful crystal or a secret from the Sailor Guardians. Haruka is a strong and important character, so she would be a valuable hostage.
One possible reason could be money. The kidnappers might think they can get a large ransom from the victim's family.
Sasuke might want to get some information from Naruko. Maybe he suspects that she knows something about a threat to the Uchiha clan that he is trying to uncover.
One possible motive could be jealousy. Grindelwald might be jealous of Dumbledore's power and popularity in the wizarding world. By kidnapping him, he wants to prove that he is the more powerful one.
Kidnapping is a very serious offense. Generally, the legal consequences can include a long prison sentence. In many jurisdictions, it can be punishable by several years or even decades in prison. This is because kidnapping involves taking someone's freedom against their will, which is a fundamental violation of human rights. Additionally, depending on the circumstances, such as if the victim was harmed during the kidnapping, the sentence may be even more severe.
In a fanfiction like this, Kaname might kidnap Zero because he wants to use Zero's power for his own gain. However, during the kidnapping, Zero refuses to cooperate. This leads to a power struggle between them. Kaname might try to use his charm or manipulation skills on Zero, but Zero is too stubborn. Eventually, their relationship could change. They might find some common ground or at least start to understand each other better through this forced encounter.
One possible plot development could be Link's friends setting out on a rescue mission. They might face various obstacles and enemies along the way. For example, they could encounter Ghirahim's minions who try to stop them from reaching Link. Another aspect could be Link's own struggle while being held captive. He might try to find a way to escape on his own, perhaps by finding a weakness in Ghirahim's lair.