A possible plot twist could be that the transformation into the DC world is not permanent. Just as the character starts to build a life and relationships in this new world, they face the threat of being sent back to their original world. This creates a race against time to either find a way to stay or to make a significant impact before leaving.
One interesting plot twist could be the main character initially believing they are a regular human but then discovers they have a hidden superpower. This changes their entire perception of themselves and their role in the DC world.
A really unique plot twist in DC Vampire fanfiction can be that the Green Lantern Corps has to deal with a vampire - like entity that feeds on the energy of their rings. This forces them to find new ways to power their rings and fight this entity. And sometimes, a plot twist is that a vampire version of Aquaman rules the underwater world, and the normal Aquaman has to figure out how to stop him without getting turned into a vampire himself.
The main character themselves would be very memorable as they are the one experiencing the transformation and all the challenges that come with it. Their journey of adapting to the DC world makes them stand out.
A great plot twist could be the discovery that Naruto and Raven are related in some way through a long - lost multiversal connection. This would completely change their dynamic and the way they interact with each other. Also, perhaps Naruto's ability to transform into different forms gives Raven new insights into her own powers of transformation or shape - shifting. Another plot twist might be that a powerful artifact in the DC New 52 world is actually linked to Naruto's world, and only they can unlock its true potential together, leading to a race against other characters who want to use it for evil purposes.
One interesting plot twist could be when the protagonist discovers a hidden power in his smartphone that he didn't know was there before. It could completely change the way he interacts with the new world and give him an edge in difficult situations.
Well, in many family business novels, a common plot twist could be the discovery of a long - lost relative who has a claim to the business. This can throw the whole family dynamic and the business operations into chaos.
One interesting plot twist could be when the main character discovers that the treasure they've been hunting for all along is not gold or jewels, but a map leading to an even greater mystery. This completely changes the direction of their hunt.
One interesting plot twist could be that the vampire hunters turn out to be vampires themselves in disguise. This completely flips the expected dynamic and adds a whole new layer of mystery and danger.
Perhaps a character who is initially presented as an enemy turns out to be an ally. In 'blood secrets fictional novel', this could happen when the character's true motives are revealed. Maybe they were only acting as an enemy to protect someone or something important.
One plot twist could be that the aliens are actually trying to protect the humans from a greater threat hidden deep in the labyrinth. Another is that the labyrinth is a living being itself and the aliens are its servants.
One possible plot twist could be that the retired spy discovers a conspiracy right in his own town that is somehow related to his past missions. He then has to decide whether to get involved or stay out of it. For example, he might find out that a local business is a front for an international crime syndicate he once fought against. This forces him to use his old skills to expose the truth while also protecting his new, quiet life in town.