Batman's allies are very likely. For example, Robin. The Joker would see kidnapping Robin as a great way to taunt Batman. Also, Commissioner Gordon might be a target as he represents law and order, which the Joker loves to disrupt.
Well, often there is the theme of chaos. The Joker is all about chaos, so in the fanfiction, his kidnapping might lead to total mayhem in the city or among the other characters. There could also be a theme of the kidnapped character's transformation, either becoming stronger in the face of the Joker's madness or losing their sanity as well.
No, it's not common at all. Thor is usually depicted as a heroic and noble character in fanfiction. Kidnapping goes against his basic nature of protecting the weak and upholding justice.
One common theme is the heroic rescue. In these fanfictions, Max and 99 often use their unique spy skills to outwit the kidnappers and save the day. Another theme could be the emotional turmoil of the kidnapped character, exploring their fears and hopes while in captivity.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including Get Smart. There may also be some on FanFiction.net.
Well, perhaps in this fanfiction, Shield Tris is being misinformed. She might believe that Harry is in possession of something extremely valuable, like a powerful magical artifact. So, in her mind, kidnapping Harry is the only way to get that item. It could also be that she's part of a group that has a radical ideology and they see Harry as a threat to their plans, so they order her to kidnap him.
Yes, there are some out there. You can try searching on fanfiction platforms like Archive of Our Own. Some stories might explore different motives behind Rhaegar's actions, whether it was true kidnapping or a more complex situation involving love or prophecy. However, interpretations can vary greatly among different authors.
Another reason could be to protect her from a prophecy. In the world of fanfiction, there could be a prophecy that foretells Renesmee's doom if she stays with the Cullens. So Jacob, thinking he's doing the right thing, kidnaps her to keep her away from that fate.
Well, the kidnapped fan is of course a central character. They are usually a die - hard Beatles fan, often young and naive. Then there are the kidnappers. They could be anyone from obsessed fans gone wrong, like someone who has an extreme view on the Beatles' music and wants to control the narrative around it.
Another reason could be that Tsunade is trying to use Naruto for some sort of political leverage within the village or against other villages. She may think that having Naruto in her control gives her an advantage, but as the story unfolds, she realizes the error of her ways.