How could the storylines of Harry Potter, Hydra and Avengers intersect in fanfiction?

One idea could be a crossover where Hydra discovers the wizarding world in the Harry Potter universe and tries to use magic for their evil purposes. The Avengers somehow get wind of this and team up with Harry Potter and his friends to stop Hydra. Maybe they have to battle magical creatures that Hydra has corrupted with dark magic.

Yes, there are some. One might involve a 'hydra' as a guardian of a powerful magical artifact. The heroes have to find a way to defeat it to obtain the item. Another could be where a 'hydra' is part of a dark wizard's army, causing chaos in the wizarding world.

Well, Parseltongue could be used to communicate with a Hydra if the Hydra has some snake - like qualities. For example, if it has a hissing language, Harry could use Parseltongue to understand it and negotiate with it.

Well, first of all, the Avengers would need to locate Harry Potter. Maybe Hawkeye could use his eagle - eyed skills to spot him. Then, Captain America could lead the team in a rescue mission. Hulk could be the muscle, smashing through any obstacles in their way. Black Widow could use her combat skills to take out any enemies nearby. And finally, they could use the Quinjet to escape with Harry to safety.

One way their storylines could intersect is through a political alliance. Robb Stark, being a key figure in the North, could seek Daenerys' help with her dragons to fight against their common enemies, like the Lannisters. Maybe Robb hears of Daenerys' power and decides to send an envoy to her. This could lead to a meeting between them and a negotiation of terms for an alliance.

In some Harry Potter fanfictions, 'hydra' could be a magical experiment gone wrong. A wizard or witch might have been trying to create a new form of life or a powerful spell, and instead, they ended up with something similar to a hydra. It could also be a name given to a place, like a hidden lair or a dangerous area filled with all sorts of magical perils that the characters need to navigate through.

In such a fanfiction scenario, Harry Potter might be forced to use his magic in new and unexpected ways to try to escape. Maybe Hydra would be interested in his magical abilities for their own evil purposes, like using his magic to power some sort of dark weapon.

In some fanfictions, the magical creatures in Harry Potter are linked to Greek mythology. For example, the Hippogriff can be related to the Pegasus in Greek mythology. They are both magical flying creatures. Also, some fanfic writers might create a story where a character from Harry Potter has to face a challenge inspired by a Greek myth, like a maze similar to the one in the story of Theseus.

Harry Potter might save the Avengers by using his magic to teleport them away from danger. He could use Apparition or the Floo Network if he could somehow make it work in the Avengers' world.

Harry Potter could lead the Avengers through his strategic thinking. He's had to plan against Voldemort and his Death Eaters. So he could come up with battle plans for the Avengers. He might use magic to communicate with the team over long distances, like a modified version of the Floo Network. Also, he would encourage the Avengers to embrace their individual strengths, just as he did with his classmates at Hogwarts.