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 Percy Jackson fanfiction, families can be depicted in various ways. Some might show Percy's family having new and unexpected adventures together. For example, his mom could discover a new magical ability that she uses to protect the family from an ancient threat. Another idea could be that Percy's half - brother Tyson becomes a key figure in protecting the family from monsters that target them specifically because of Percy's fame among the demigods.
One popular original character is often a new demigod who is related to Percy's family in some way. For example, a cousin who has a unique power that helps Percy and his family in their battles. This character adds a fresh perspective to the family's adventures.
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.
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.
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.
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 unique plot twist could be that Percy has hidden powers from his Titan heritage that no one, not even the gods, expected. For example, he might be able to control time in a small way, which is a power not associated with his normal demigod abilities.
In some fanfictions, Percy's half - brother Tyson might be made to betray him. This could be due to being tricked by some sea monster that convinces Tyson that Percy is a danger to their kind. Also, Grover could be lured into a situation where he has to choose between saving the wild and betraying Percy. It often makes for a very heart - wrenching story as Grover and Percy have such a strong bond. Sometimes, the betrayal comes from an unexpected source like the gods themselves. They might use Percy as a pawn and then turn on him when he's no longer useful.
Well, a frequent plot twist is related to Percy's origin. In some fanfictions, it turns out that his assassin - god powers are not a result of some new blessing but are actually related to his long - lost family heritage. Maybe he has a secret relative who was an assassin - god in the past. Also, there can be a plot twist where the entire concept of the 'God of Assassins' is a ruse created by a more powerful god to manipulate Percy. He might think he's on a path to become this new entity, but in reality, it's all part of a bigger scheme. Another interesting plot twist could be that the mortal world starts to notice Percy's assassin - like activities, and he has to deal with both the godly and mortal consequences.