Another possibility is a story where the gods from Percy Jackson's world interact with the gods in the God of War universe. The gods in Percy Jackson are more involved in the lives of their demigod children, while the gods in God of War are often more distant and feared. This could lead to some interesting power struggles and misunderstandings. For example, Zeus in Percy Jackson might have a very different relationship with his children compared to Zeus in God of War.
Another possibility is that Percy somehow gets transported to Eragon's world. He has to adapt to the new environment and figure out how his demigod powers work there. Eragon could initially be suspicious of Percy but then they realize they can help each other. Percy could teach Eragon about water magic, which is new in Eragon's world, and Eragon could show Percy how to ride a dragon, which would be an amazing experience for Percy.
Another possibility is a crossover of the settings. The Camp Half - Blood could be merged with an area from the Avatar world, like the Air Temple. Demigods and benders would have to learn to co - exist and use their powers together. Maybe Percy could learn water - bending techniques from the water benders to enhance his control over water, which is already one of his powers. And the Avatar could learn about the Greek gods and use that knowledge to gain an edge in his battles.
Another idea is that Peter discovers the existence of demigods while investigating a series of strange disappearances in Central Park. He stumbles upon Percy who is on a quest. They initially have some misunderstandings as they come from such different worlds, but then they figure out that they can help each other. Percy helps Peter understand the magical side of things, and Peter helps Percy with his knowledge of the city's layout and technology.
Another idea is a setting where the two worlds are merging. Percy and Magnus find themselves in a strange new place that has elements of both Camp Half - Blood and the Hotel Valhalla. They have to figure out how to survive in this new world while also dealing with the chaos that the merging is causing. The characters from both series could interact in interesting ways, like Annabeth and Samirah comparing their knowledge of architecture and magic respectively.
Well, Percy could meet Kratos. Maybe they'd fight at first because of some misunderstanding. Percy with his water powers and Kratos with his brute strength. Then they could realize they have a common enemy, like some new evil god trying to take over both their worlds.
Another theme is the idea of heroism. Percy is a hero in his own right, and Kratos is an anti - hero. Fanfics might explore how their concepts of heroism can either clash or merge. For instance, Percy's selfless heroism might influence Kratos' more self - serving actions, or vice versa. This exploration of different types of heroism makes for some really engaging stories.
A crossover could also involve a prophecy that links the two worlds. For example, a prophecy states that only the combined powers of a wizard from Hogwarts and a demigod from Camp Half - Blood can defeat an ancient evil that is rising again. Harry and Percy are the ones chosen, and they have to learn about each other's strengths and weaknesses in order to fulfill the prophecy. They could travel between the two worlds, recruiting allies from both sides.
A good crossover idea is that there's a spell gone wrong in the wizarding world that starts to affect the boundaries between the mortal world and the world of the Greek gods. Hermione, being the brilliant witch she is, tries to figure out a solution, and Percy, with his knowledge of the Greek world, gets involved. They could travel through different dimensions together, facing challenges from both magical creatures and mythical beasts.
It's hard to say. Percy has his own set of powers like controlling water and being a demigod. But Kratos is known for his incredible strength and combat skills. In a straight - up fight, Kratos might seem stronger at first, but Percy's ability to think on his feet and use his environment could make it a close match.
In this scenario, Percy would probably have a lot to say about the fanfiction. He may find some parts of it really cool, like when Kratos uses his unique weapons in ways that seem to defy the laws of the world Percy is used to. However, he might also be critical. For example, if the fanfiction misrepresents the gods in a way that doesn't match Percy's experiences with them. Since Percy has a more personal relationship with the gods in his own story, seeing them distorted in fanfiction could be off - putting. He might even start thinking about writing his own fanfiction as a response, to set the record straight in his eyes.