A fanfiction could revolve around a dark wizard in the Harry Potter world who discovers the power of the demigods from Percy Jackson and the harsh tactics of the Capitol in Hunger Games. He tries to combine these elements to create a new regime in the wizarding world. So the heroes from all three stories must team up to stop him.
Imagine a story where the characters are all students in a new, super - school that combines elements of Hogwarts, Camp Half - Blood and the training centers in Hunger Games. They have to deal with the typical problems of school life, like bullies and exams, but also face bigger threats that are related to the dark forces from their original universes.
One idea could be a crossover where the characters from all three universes are brought together for a special tournament. They have to use their unique skills from their respective worlds to compete. For example, Harry could use his magic, Percy his water - related powers, and the tributes from Hunger Games their survival skills.
One idea could be a crossover where the characters from Harry Potter and Percy Jackson end up in the world of Guardians. For example, Harry, Hermione, and Ron could meet Star - Lord and the gang while on a quest to find a magical artifact that has the power to save both the wizarding world and the demigod world. The Guardians could initially be skeptical of these strange new wizards but then realize they have a common enemy in a dark force that threatens all their realms.
One idea could be that Percy finds himself magically transported to Skyrim. He could use his water - based powers in the frozen landscapes, like creating ice bridges over rivers or using water currents to his advantage in battles against the various creatures in Skyrim.
A possible fanfiction could involve a crossover where some of the Avengers are sent to Camp Half - Blood. Imagine Tony Stark trying to figure out how the magic at the camp works while also being highly amused by the whole concept of demigods. Steve Rogers could bond with some of the more heroic demigods over their shared sense of duty. Meanwhile, Percy and his friends have to keep an eye on the Avengers to make sure they don't accidentally disrupt the delicate balance of the camp. And then, they all have to face a threat that targets both the Avengers and the demigods, like a group of villains who want to steal the powers of both.
Perhaps there's a plot where the dinosaurs are being used by an evil force. The evil force has found a way to control the dinosaurs and is using them to attack the demigod camps. Percy and his friends then have to figure out how to break the control and save the day. They might find out that the dinosaurs have a connection to an old Greek god or goddess that they didn't know about before.
One idea could be that Percy Jackson discovers a hidden Cybertronian relic. This relic has the power to control water in a way that even Poseidon's trident can't. The Autobots and Decepticons are both after it. Percy has to team up with the Autobots to keep it out of the Decepticons' hands and also figure out how it relates to his world of Greek gods.
In a fanfiction, perhaps the gods in the Percy Jackson universe are aware of Cthulhu as an ancient and powerful being from another realm. They send Percy on a quest to learn more about Cthulhu's weaknesses in case he ever wakes up fully. Percy teams up with some of his demigod friends and they encounter all sorts of Lovecraftian horrors along the way. They soon realize that Cthulhu's power is far greater than anything they've ever faced and they have to rely on their wits and some newfound magic to survive.
In such a battle, the wizards from Harry Potter would have the advantage of long - range magical attacks. However, Percy and his demigod friends could use the environment to their advantage, for instance, Percy making water rise from the ground to slow down the enemy. The Hunger Games tributes would be sneaking around, looking for opportunities to strike. The battle would likely be a mix of all - out assaults and strategic hit - and - run tactics as each side tries to use their unique abilities to win.
One idea could be that Percy and his demigod friends are somehow forced into the Hunger Games arena. Percy could use his water - controlling abilities to his advantage, like creating a water shield or using water currents to move around quickly. Another could be a crossover where the tributes from the Hunger Games have to face off against mythical creatures from the Percy Jackson world. For example, they might have to fight a minotaur or deal with a group of harpies.
In a fanfic, Percy could be a new student at the academy, but with his demigod powers. His water - controlling abilities would be quite a shock to the vampire and monster students. There could be a plot where some of the vampires want to use Percy's powers for their own gain, leading to an exciting adventure of Percy trying to outwit them.
In this fanfiction, the gods in Percy Jackson's world are intrigued by Poison Ivy's power. They bring her to Olympus to study her. Percy is assigned to be her guide while she's there. Along the way, they discover that there are similarities between the magic in Poison Ivy's world and the divine powers in Percy's world. They start to experiment with combining their powers, like Percy using his water powers to help Poison Ivy's plants grow in unexpected ways, and Poison Ivy using her plants to create shields for Percy during his training sessions.