The gods in the Percy Jackson universe would have mixed reactions. Some might see the daughter as a potential threat or a powerful ally. Zeus might be initially suspicious, but if the daughter proves her worth, he could be an important figure in her story. Poseidon would be proud, as he was of Percy. In the Naruto world, the village elders would be cautious. They would want to make sure the daughter uses her powers for the good of the village. But characters like Iruka would be very supportive from the start, seeing the potential for great things in the daughter.
Percy would be really conflicted. On one hand, he's used to following the orders of the gods, but on the other, he knows the Avengers are heroes. He'd probably feel guilty about banishing them. The Avengers would be confused and angry. They'd try to figure out who Percy is and why he's banishing them. Iron Man might try to use his technology to find a way out of the banishment, while Captain America would be more focused on trying to reason with Percy.
Annabeth would be devastated. She and Percy have a deep connection. She might go into a state of shock at first, then be filled with a fierce determination to find out who was responsible and make them pay. She would probably also be racked with guilt, thinking she could have done something to prevent it.
The gods would likely be very interested and a bit apprehensive. Zeus, for example, would be worried about Percy's new power disrupting the order of things. Athena might try to use her wisdom to figure out how to control or guide Percy in using his void powers. Poseidon would be conflicted, proud of his son's power but also concerned about how it will affect Percy's future and his relationship with the other gods and demigods.
Elsa would probably be cautious at first. She has her own kingdom to protect and a stranger with unknown powers like Percy might seem like a potential threat. Anna, on the other hand, would be more curious and friendly. She'd likely want to know all about Percy and his world right away. Kristoff might be a bit skeptical, but he'd also be interested in seeing what Percy can do.
Percy would probably be very confused at first. He's used to dealing with threats from the world of Greek mythology, not superheroes like the Avengers. But once he realizes he's been kidnapped, he'd likely be angry. He'd try to find a way to escape using his powers, like controlling water to create distractions or even using it to overpower his captors.
His first reaction might be shock. Dragons aren't exactly common in his world, even with all the mythical creatures. But then his hero instincts would kick in. He could try to befriend the dragon, thinking it could be an ally in future battles against the Titans or other enemies. He might offer it some food, like a fish or something, to gain its trust.
Grover would be really worried. He's always been Percy's protector in a way. He would be concerned about how this would affect Percy's life and safety. He might also try to help Percy find resources or support within the demigod community.
Annabeth would probably be the first to try to calm Percy down. She's always been the rational one. She might use her knowledge of architecture and engineering to quickly assess the damage and come up with a plan to protect people. Grover, on the other hand, would be more worried about the nature spirits affected by the earthquake. He'd try to communicate with them to see if they can help in any way.
Percy would be angry. He has been through a lot in his own world and being betrayed again would not sit well. He'd probably lash out with his powers at first.
Well, some past gods might be amused. They'd see these modern interpretations of their stories and characters in the Percy Jackson fanfiction as a strange yet interesting new form of worship or at least attention. For example, Zeus might be a bit irked at some of the liberties taken with his character, but also secretly flattered that people are still so interested in him.