One interesting plot twist could be that when Harry Potter apparates to Middle - earth, he discovers that the magic there is so different from his own that he loses his ability to perform some of his usual spells. This forces him to adapt and learn Middle - earth magic, creating a whole new set of challenges for him.
The characters from Hogwarts would likely be very curious about the races in Middle - earth. For example, Hermione might be eager to study the elves and their knowledge of magic. And the Middle - earth characters would be both cautious and intrigued by the sudden appearance of these strange wizards. Aragorn might see them as potential allies or threats depending on their actions.
Well, perhaps Harry would be super confused at first. He'd find himself in a world full of different races like hobbits, elves, and dwarves. Maybe he'd use his magic to help in the fight against Sauron. He could teach the people of Middle - earth some new spells or ways of magic that they've never seen before.
Well, he might be really confused at first. Middle Earth has its own unique magic system and races. Harry, with his Hogwarts - trained magic, would have to adapt. He could probably make friends with some of the elves, like Legolas, as they both have a sense of honor and skill in archery. And his encounter with Gandalf would be really interesting, as they are both powerful wizards in their own ways.
One possible plot could be that Harry Potter somehow gets transported to Middle Earth. He might use his magic skills to help in the battles against the dark forces there. Maybe he forms an alliance with the Fellowship of the Ring and uses his knowledge of facing dark wizards like Voldemort to take on Sauron.
Well, in such a fanfiction, Harry Potter would have to adapt to Middle Earth's cultures. The elves might teach him their refined ways of magic. And he may use his broomstick in a very different landscape, perhaps flying over the Misty Mountains. His presence could also change the fate of Middle Earth as he has a strong sense of justice.
She could fit in as a powerful ally. Her skills in magic, like casting spells and using potions, would be valuable in Middle - earth. For instance, her ability to perform defensive spells could protect the inhabitants from various threats.
Well, he might bring his magic from the wizarding world to Middle - earth. Maybe he'd use spells to fight against the dark forces there like Sauron. He could also make friends with the hobbits, elves and dwarves, teaching them some new magic tricks.
Sauron would surely be one of the main antagonists. His lust for power and domination over Middle Earth is well - known. In this fanfiction, he would see Harry Potter as a major threat to his plans.
Sauron could be a major antagonist. His power and desire for domination would put him in direct conflict with Harry. Voldemort - like elements might be incorporated into Sauron's character in this fanfiction.