One possible interesting plot could be a crossover where the heroes from the Throne of Heroes are summoned into the Harry Potter world. They could use their unique powers and abilities to help in the fight against Voldemort. For example, a heroic archer from the Throne of Heroes could provide long - range support during battles at Hogwarts.
Harry Potter himself could be the main character. He could be the one who discovers the connection between his world and the Throne of Heroes. He might then use this knowledge to gain new allies and powers to fight against the dark forces in his world.
In some fanfictions, Harry Potter can be made an heir to a throne. Fanfiction writers often take creative liberties and create alternate universes. They might connect Harry to a long - lost royal lineage, perhaps from a wizarding kingdom that has been forgotten or hidden. This can add a whole new layer of intrigue and adventure to the Harry Potter story we know.
There are likely to be. Since fanfiction is a vast and diverse realm, it's quite possible for someone to have written about faery heroes in relation to Harry Potter. These faery heroes could be from a hidden part of the wizarding world, with their own culture and magic that intersects with the main story of Harry Potter.
They can be introduced as allies. For example, they could come to Hogwarts when they sense the dark forces rising. Their faery magic could be different from the regular wizarding magic, like being able to control nature in ways wizards can't. This would make them valuable in battles.
A frequently seen plot involves Harry having to prove his right to the throne. There could be false heirs or those who question his legitimacy. Also, there are often plots where his friends play important roles. They might help him in his journey to claim the throne, like Hermione using her intelligence to solve mysteries related to his royal lineage, and Ron standing by his side in battles. There can also be love interests added to the mix, like a princess from another wizarding realm who Harry has to marry for political reasons.
Interaction might involve a bit of competition too. The demigods are used to physical combat and using their powers in a more direct way. The wizards, with their spells, might seem a bit sneaky to the demigods at first. However, they could learn from each other. A demigod could learn how to use a disarming spell, and a wizard could learn how to fight without relying on a wand from the demigods.
The meeting could also lead to some interesting cultural exchanges. The heroes of Olympus could introduce the concept of the Greek pantheon to the Hogwarts students. In return, the Hogwarts students could show them how to play Quidditch. Hermione would probably be really interested in learning about the ancient Greek magic that the heroes of Olympus might know. And Annabeth would be eager to study the books in the Hogwarts library.
A great concept for Harry Potter heroes crossover fanfiction would be to cross them with the characters from the Star Wars universe. Picture Hermione using her intelligence to outwit Darth Vader. Or Harry learning some Jedi mind tricks. Also, a crossover with the characters from the Percy Jackson series. The demigods and the wizards could have an interesting interaction. Maybe they could combine their powers to defeat a common foe that threatens both the magical and the mythological worlds.