He could interact through alliances. For example, if the situation calls for it, he might join forces with a Roman demigod from a different pantheon to take on a greater threat like a primordial being.
Percy might interact by trading knowledge. If he meets a demigod from the Aztec pantheon, they could exchange information about their respective mythologies and powers. This could give Percy new insights on how to use his powers in different ways.
Well, one possibility is that there would be a lot of cultural clashes. Percy is used to the Greek pantheon's ways. When he meets other pantheons like the Egyptian one, he'd have to deal with different rules and magic systems. Maybe he'd form alliances. He could team up with an Egyptian demigod to fight a common enemy that threatens both their pantheons.
The Greek powers are often more fluid and based on the will of the gods. For example, a child of Poseidon can control water in a very natural way. The Roman powers, on the other hand, seem more structured. A Roman child of Neptune might use water in a more strategic, military - like way. So when they meet, there could be clashes. A Greek demigod might think the Roman way is too rigid, while the Romans could see the Greeks as chaotic. But they could also learn from each other. The Greeks could teach the Romans to be more in tune with the natural flow of their powers, and the Romans could show the Greeks how to be more disciplined in using them.
In some fanfictions, Hermes interacts with Percy as a mentor. He might offer advice on how to deal with other gods or mythical creatures. For example, he could tell Percy the weaknesses of a particular monster. In other stories, he may be more of an enigma, his actions and words being hard to decipher. Sometimes, Hermes and Percy form an alliance, like when they have to face a common threat together.
In some fanfictions, Zeus interacts with Percy in a hostile way at first. He sees Percy as a threat to his power and the order of Olympus. For example, he might try to limit Percy's abilities or send challenges to prove Percy's unworthiness.
Percy would interact in a cautious yet curious way. He'd be curious about their powers, like Anubis' role in the afterlife. But he'd also be cautious as he doesn't know how they'll react to a Greek demigod. He might use his charm, which has worked on some Greek gods, to try and build relationships. However, he may face some resistance from the more xenophobic Egyptian gods who see him as an intruder.
Well, in Percy Jackson and Christianity fanfiction, one common theme could be the co - existence of the two belief systems. Some fanfic authors might write about how a character from the Percy Jackson universe discovers Christianity and how that changes their view of the world. Maybe a demigod starts to question their own powers and the existence of their Greek gods in the light of Christian beliefs about one all - powerful God.
Percy might initially be an outcast among the other demigods. His parentage is quite different from the normal Olympian - related demigods. They might be wary of him because they don't understand his powers. However, some brave demigods could be curious and try to befriend him.
In a fanfiction, Percy Jackson and the Avengers' interaction would be complex. Percy comes from a world of gods and monsters, and the Avengers from a world of super - science. At first, there could be misunderstandings. Percy might think the Avengers are too full of themselves, and they might think he's a bit of a wild card. However, as they face challenges together, like a group of mythical beasts invading New York, they'd learn to rely on each other. Percy could use his ability to communicate with sea creatures to gather intelligence, while the Avengers use their powers to fight on land. Their combined efforts would make them a formidable team.
Percy would probably be in awe of Aquaman's pure Atlantean powers at first. He might be a bit jealous as well, since he's just a demigod with limited underwater abilities compared to Aquaman. Aquaman, on the other hand, would be curious about Percy's connection to the Greek gods. They would start off a bit cautious around each other, but as they face common threats in the ocean, like pirates using dark magic or sea creatures gone berserk, they would gradually start to trust and rely on each other.
Percy could use his skills in combat and his powers over water to interact with dinosaurs. For example, if a dinosaur attacks him near a water source, he could create a large wave to knock it back or use the water to make himself move faster to avoid its attacks. He might also try to communicate with them if he discovers some kind of ancient magic or power that allows him to do so.