Often, there's a sidekick or a group of friends for the captor. They can play different roles like helping the captor in battles against those who want to take Darkrai, or providing moral support. And sometimes, there are mysterious characters who seem to have a connection to Darkrai's past and their appearance adds more mystery to the story.
In many of these fanfictions, there could be a rival trainer. This rival might be jealous of the captor for getting Darkrai and try to steal it. Also, there could be a Pokémon professor - type character who gives advice on how to handle Darkrai. For example, they might know some special techniques to keep Darkrai calm while captured.
Well, sometimes the story could be about a young and inexperienced trainer who accidentally captures Darkrai. This sets off a chain of events where the trainer has to learn quickly how to handle such a powerful Pokémon. The trainer might face challenges from other trainers who want to take Darkrai for themselves, and also has to deal with Darkrai's own resistance at first.
One common theme is the rescue mission. The friends of Tails will usually band together to save him. For example, Sonic will use his speed to find out where Tails is held and then they will all figure out a plan to break him out.
It could be Team Rocket. They are always up to no good and kidnapping a powerful Pokémon like Darkrai would be right up their alley.
In the 'darkrai gets kidnapped fanfiction', perhaps a group of trainers who want to control the power of the Legendary Pokémon Darkrai kidnapped it. They might be planning to force Darkrai to battle other Legendaries. This would create a lot of chaos in the Pokémon world as Darkrai is a very powerful and mysterious Pokémon.
Well, there's usually the captured human. This character can be from various backgrounds, like a student or a traveler. Then there are the vampires. There's often a powerful vampire lord or queen who rules over the others. And there might be a vampire who is more sympathetic to the human's plight, perhaps having some human memories or emotions left.
Most likely, Pidge's teammates would be the ones to rescue them. Characters like Shiro, Keith, Lance, and Hunk would be prime candidates. They have a strong bond with Pidge and would stop at nothing to get them back. Shiro, with his leadership skills, would probably plan the rescue mission. Keith could be the one leading the charge in the actual rescue with his combat skills. Lance and Hunk would also contribute, maybe Lance with his sharpshooting and Hunk with his engineering knowledge to get through any barriers.
Batman is the most likely. He has a strong bond with Nightwing and would do anything to save him. His skills in combat and detective work would be crucial in finding and freeing Nightwing.
Well, if Ash gets Darkrai as a starter, he would have a really powerful Pokémon right from the start. Darkrai is known for its ability to induce nightmares and has strong dark - type moves. Ash could use it to quickly gain an edge in battles against other trainers. Maybe he would face some challenges too, like dealing with people who are afraid of Darkrai because of its spooky reputation.
A frequently seen theme is the exploration of the dark side. Ezra, being in a vulnerable state of capture, might be tempted by the dark side. This could be shown through his interactions with Imperial officers or Sith agents. The fanfiction might also focus on the Rebels' determination. Their unwavering commitment to rescuing Ezra can show the strong bond within the group. And sometimes, there's a theme of discovery. Ezra might discover something important about the Empire or the Force while being captured.
In Darkrai and Cresselia lemon fanfiction, one might expect themes related to the characters' personalities being explored in a sexual context. For example, Darkrai's more mysterious nature could be used to create a sense of allure in a romantic or sexual relationship with Cresselia. But it's important to note that this is not the kind of content that is suitable for all audiences and goes against the general spirit of the Pokémon world which is aimed at a wide range of ages including children.