In many fanfictions, when the Avengers go to the past, they face the challenge of fitting into the past society. They have to deal with the different technology and social norms. Also, they might accidentally change some small things that lead to unexpected consequences. For instance, a simple conversation with a past character could change that character's future actions, which then has a ripple effect on the overall timeline.
They might encounter their past selves. In some fanfictions, they could try to prevent certain events from happening without changing the overall timeline too much. For example, they may stop a minor villain from getting a powerful weapon in the past.
Well, in the fanfiction world, when the Avengers go to the past, they could meet old allies who are no longer alive in their present time. They might form new relationships or strengthen existing ones. Maybe they teach their past selves some new skills or strategies that they've learned over time.
Some Avengers might be cautious and try to observe first. For example, Iron Man could use his technology to analyze the situation before approaching past characters.
They might encounter rare Pok茅mon and face tough battles. Maybe they also make new friends along the way.
They might first be shocked by the new environment. But then, they would start using their skills. Captain America could use his leadership skills to gather information. Iron Man would start analyzing the new technologies right away.
There could be a secret passageway in the school that leads to an ancient mythological place. Percy and Annabeth discover it by accident. Percy is excited to explore but Annabeth warns him to be cautious. They enter together, facing various traps and puzzles inside. Along the way, they might meet some minor gods or spirits who are either helpful or try to hinder their progress. This adventure would test their skills and teamwork, just like their quests in the original stories.
They might have fun exploring the schoolyard together. Maybe they find a secret hiding place.
They could have a mini - adventure within the quarantine zone. Maybe they discover a hidden room in the compound that has some sort of mystery element. For example, it could be a room filled with old technology from the early days of S.H.I.E.L.D. that they have to figure out how to work. Or they could have a cooking adventure, with Thor trying to make Asgardian food and everyone else either being horrified or pleasantly surprised by the results.
The Strawhats could have all sorts of adventures. Maybe they team up with Shanks to take on a powerful enemy or discover a hidden treasure.
Well, it varies a lot in fanfictions. Sometimes trainers have to go to school in the morning and have their Pokemon training in the afternoon. Or it could be that they attend a special Pokemon training school all day long.
They might go on a journey to discover the secrets of Itachi's past. Naruto could learn a lot from Itachi about the Uchiha clan and their powers. Maybe they'll encounter other powerful ninja clans along the way and have to fight or make alliances.
Well, they could end up in a time when the gods were more actively involved in mortal affairs. Percabeth might get caught up in an ancient war between the gods. They'd have to use their wits and skills. Percy would be in his element with water - related challenges, and Annabeth could use her knowledge of ancient history to navigate the complex situations of the past.