Perhaps Percy's presence in the Norse world as Thor's brother starts to change the fates that were foretold. In Norse mythology, there are many prophecies. Percy's actions and his influence on Thor could start to rewrite these prophecies, causing chaos among the Norse gods. For example, a prophecy about Ragnarok might be affected, and the gods have to deal with the unexpected consequences. This would make for a very engaging and unpredictable fanfiction plot.
A great plot twist could be that the gods of both worlds had a secret plan all along. They made Percy and Thor brothers to create a bridge between the Greek and Norse realms. But when Percy and Thor start to figure this out, they face opposition from some of the more traditional gods who don't want the two worlds to mix. This could lead to a conflict where Percy and Thor have to fight not only against external enemies but also against their own godly families. It would add a whole new layer of drama to the fanfiction.
Well, in some fanfictions, a great plot twist is that Percy, being born a god, discovers he has a connection to an entirely different pantheon than expected. Maybe he thought he'd be a Greek god like Poseidon, but instead has ties to the Norse gods. Another interesting turn is when his birth as a god is part of a much larger scheme by an ancient and powerful entity. And then there are those where Percy's new godly status causes a rift between him and his mother, as she struggles to accept this new version of her son.
One interesting plot twist could be that Percy discovers he has a long - lost sibling within the family. Maybe a half - brother or sister from a different godly encounter that his parents had in the past. This would change the family dynamics completely and add a new layer of relationships for Percy to navigate.
In some fanfictions, a really cool plot twist could be that Percy's Hela - given powers are slowly corrupting him. He starts to see the world in a different, darker way. His friends notice the change in him but don't know the cause at first. As he struggles with this corruption, he has to find a way to either embrace it and use it for good in a new way, or find a way to get rid of it. Also, imagine if Percy discovers that he has a half - brother or sister from Hela's side in the Norse world, and this new relative has a completely different view on life and power, which causes more drama and conflict for Percy.
One interesting plot twist could be that the daughter of Nyx has a hidden power that is the key to saving Olympus from a new, unknown threat. Maybe she can control time in a way that no one expected, which throws the whole dynamic between the gods and demigods into chaos.
In the stories, the revelation about Luke being a traitor is a big plot twist. He was initially seen as a friend and mentor to Percy. But later, it turns out he has his own dark motives and is working against the gods, which adds a lot of complexity and danger to the story.
One interesting plot twist could be that the Minotaur is actually a misunderstood creature under a curse. In some fanfictions, it might be revealed that he was once a heroic figure before being transformed. Another twist could be Percy having a secret power that he discovers while fighting the Minotaur that changes the whole dynamic of their encounter. For example, he might be able to communicate with the Minotaur's mind and find out its true motives.
A really cool plot twist might be that the reincarnated character realizes they are not just reincarnated into the Percy Jackson world randomly. They are part of a prophecy that was long forgotten. Their actions in this new life will either save or destroy the world of demigods. This would add a layer of high stakes and mystery to the fanfiction.
One interesting plot twist could be that Percy discovers a new power within the gamer - like world that he didn't know he had. Maybe he can suddenly control the elements in ways he couldn't before, like creating ice sculptures out of thin air when his main power was water - based before.
A very creative 'Thor meets Percy Jackson' fanfiction involves the two being sent back in time to the creation of their respective mythologies. They have to make sure things happen as they should without changing history too much. It's full of interesting twists as they interact with the primordial beings of both mythologies.
A great plot twist could be that Percy, as the champion of Artemis, has to deal with the jealousy of other gods. Since Artemis is a powerful and respected goddess, some other gods might not be happy about Percy being her champion. This could lead to various challenges for Percy, such as being framed for a crime he didn't commit by a jealous god. Or perhaps, there could be a twist where the hunters of Artemis have mixed feelings about Percy. Some might see him as an intruder, while others start to develop a different kind of respect for him, which creates internal conflicts within the group of hunters.