Perhaps Slade is simply obsessed with Nightwing. He could be envious of Nightwing's abilities and popularity. In his twisted mind, kidnapping Nightwing could be a way to prove his superiority over him, or to study him up close to find weaknesses.
One possible motive could be revenge. Maybe Nightwing has thwarted Slade's plans in the past, and Slade wants to get back at him. Another could be that Slade sees Nightwing as a valuable asset. He might plan to use Nightwing's skills for his own evil purposes, like forcing him to steal something or gather information for him.
Slade might also kidnap Nightwing as a way to lure other heroes. He could use Nightwing as bait to draw out Batman or other members of the Bat - family. By having Nightwing in his custody, he creates a situation where the heroes have to come to his terms in order to save their friend.
He may also try to talk his way out. Nightwing is known for his charm and intelligence. He could try to reason with Slade, find some common ground, or play on Slade's emotions. Maybe he could remind Slade of a past event where they had a moment of mutual respect, hoping to make Slade let him go.
He might try to engage Slade in conversation. Nightwing is smart and could be looking for a way to psychologically get an edge over Slade. He could be probing for Slade's motives, hoping to find a way to turn the situation around. He might also be stalling for time, waiting for the right moment to make his move.
It's also possible that Nightwing and Slade end up having a long conversation during the captivity. Slade might try to convince Nightwing to join his side, perhaps by appealing to some sense of justice that he thinks Nightwing is missing. Nightwing, of course, would resist, but this could lead to some interesting character development for both of them as they debate their different ideologies.
It's not appropriate. Fanfiction should focus on exploring the characters' personalities, relationships in a non - sexualized way. 'Slade and Nightwing' have complex relationships that can be explored through friendship, rivalry, etc., but sexualizing them is not acceptable in the general fan community.
One common theme is the struggle between good and evil. Nightwing represents the good side, while Slade often toes the line. Their interactions often revolve around this dichotomy.
Some fanfictions show Slade taunting Nightwing about his relationship with Batman. This can create tension between Nightwing and Batman as Nightwing might feel the need to prove his independence. Batman, in turn, may be overly protective, which Slade can use to his advantage. The interactions can also lead to unexpected alliances. For instance, in some stories, Slade and Nightwing might have to work together briefly against a common enemy, much to Batman's dismay.
Well, one type of fanfiction could be about a young Nightwing still learning from Batman and then getting caught in a conflict with Slade. The story could show how Nightwing uses the skills he learned from Batman to outwit Slade. Another aspect could be the psychological battles. Since Slade is a formidable opponent, fanfictions can explore how Nightwing and Batman deal with his mind games, and how their own mental states are affected during these encounters.
You can focus on their battles. For example, describe in detail how they strategize against each other, the moves they make, and how they try to outwit one another during a fight. This can show their skills and the tension between them.
One popular slade x nightwing fanfiction is 'Shadows of the Past'. It delves deep into their complex relationship, exploring how their past encounters shape their present interactions. The story has great character development and an engaging plot.
The plot might go like this. Slade kidnaps Robin in a very stealthy way. He takes Robin to an abandoned building. There, he tries to indoctrinate Robin into his way of thinking. He could be telling Robin that Batman is using him and that he can offer Robin more power. However, Robin stays true to his beliefs. Meanwhile, Batman is on a frantic search for Robin, following every lead, and the Bat - family is also on high alert. Robin is constantly looking for an opportunity to turn the tables on Slade and escape.