The Avengers could protect Hogwarts in many ways. For instance, Doctor Strange, if he was considered an Avenger here, could use his magic to create powerful wards around the school, stronger than any Hogwarts has ever had. Captain Marvel could fly around the perimeter of Hogwarts, her energy blasts ready to take out any flying threats like dementors or dark wizards on brooms. And the Vision could use his density - changing ability to pass through walls and check for any hidden threats within the castle itself.
Well, the Avengers teaching at Hogwarts would be a dream come true for some students. Imagine Spider - Man swinging around the Hogwarts grounds and giving tips on agility. Doctor Strange could open up a whole new realm of magic for the students, something that might be a bit different from the usual Hogwarts curriculum. And Hawkeye could teach archery, which could be incorporated into a new type of combat training for the students. It would be a mash - up of two amazing fictional universes that would create countless interesting storylines.
I think Captain America would be the best. He has strong moral values and leadership skills. He could teach students about responsibility and loyalty. His discipline and sense of right and wrong would be great examples for the Hogwarts students, especially those in Gryffindor who value courage and justice.
If 'this' is a superpower, it can be used directly to defend the Avengers. For instance, if it's a power of invisibility, the holder can use it to spy on the enemies and prevent surprise attacks on the Avengers.
One way Hogwarts protects Harry in fanfiction is through its secrets and mysteries. There could be hidden chambers or artifacts that have protective powers. And the loyalty of the Hogwarts students and staff can also create a kind of protective shield around Harry.
In many fanfictions, the Avengers protect Hawkeye by using their unique powers. For example, Thor might use his lightning to fend off enemies approaching Hawkeye. Captain America would use his shield to block attacks aimed at Hawkeye. And Black Widow could use her combat skills and stealth to take out threats before they reach him.
One great Avengers protect Loki fanfiction is 'Loki's Redemption'. In this story, the Avengers realize Loki has been misjudged. They see that his actions were often a result of being manipulated. Thor takes the lead in protecting his brother from other threats, while Iron Man uses his tech to keep Loki safe from various Asgardian and earthly enemies. It's a really interesting take on the characters.
Well, he might start by using his knowledge of Hogwarts' secrets and passageways. He could keep an eye on Harry during classes and in the common areas. Maybe he'd also form alliances with other students or teachers who he trusts to help in the protection effort.
In some fanfictions, Fairy Tail characters might use their magic powers to protect Hogwarts. For example, Natsu could use his fire - based magic to fight off dark wizards attacking Hogwarts. His powerful flames could be a great deterrent against enemies.
Percy Jackson could protect Hogwarts by teaming up with the Hogwarts professors. He could offer his unique skills and knowledge. For instance, he could help in guarding the Forbidden Forest using his demigod senses. Also, his sword Riptide could be used to break through any dark magic - created barriers that the bad guys might set up around the school.