He might encounter different versions of his friends and enemies. For example, a more evil Voldemort or a kinder Snape. He could also discover new magical abilities or objects that don't exist in his original universe.
Well, if Harry is summoned to another universe in fanfiction, there are numerous possibilities. Firstly, the magical rules in that universe could be completely different. Maybe magic there is powered by emotions rather than wands. Secondly, he may find himself in the middle of a different kind of conflict. Instead of the fight against Voldemort, it could be a battle between different magical factions vying for control of a powerful magic source. And finally, his relationships with the people there would be very interesting. He might meet a Hermione who is a powerful sorceress ruling a kingdom, or a Ron who is a shy and reclusive wizard living in the forest.
They might be summoned by a powerful magical creature. This creature could be in need of their help to solve a problem in the magical world. It could be a dragon that has lost its way or a unicorn that is being hunted by dark forces, and they are the only ones who can save the situation.
When Harry is summoned by Naruto fanfiction, it's likely that he would be a fish out of water. He would encounter characters like Naruto, Sasuke, and Sakura. His magic skills could be seen as a new form of power in that world. He might get involved in the battles between the ninja villages, using his own unique abilities to help or cause chaos, depending on how the story is written.
Well, perhaps Harry could face unexpected magical challenges. The Goblet might summon him for a task that is far more dangerous than the Triwizard Tournament in the original story.
Maybe he is summoned to receive special training. The Order could have found a new way to enhance his magical abilities, like teaching him some ancient and powerful spells that can be used against the Dark Arts. It would be a great opportunity for Harry to grow stronger.
Well, he might face some unexpected challenges. In fanfiction, the author could take the plot in all kinds of directions. Maybe he'll be forced into a dangerous tournament that's even more perilous than in the original story. He could encounter new magical creatures or spells that are unique to this fan - created scenario.
In this fanfiction, perhaps Harry Potter would be in a state of great confusion when summoned by the queen. He might initially think it's some kind of dark magic trick. Maybe he'd be worried about leaving his wizarding world duties behind. And he'd likely be very curious about the Muggle royalty.
In this fanfiction, Percy might encounter different versions of his friends. For example, Annabeth could be a powerful sorceress instead of a strategist. He could also face new and strange monsters that are unique to that universe.
One interesting plot in this kind of fanfiction could be that the Goblet of Fire is actually under some dark magic influence. Harry, being summoned, discovers this conspiracy. He then has to not only deal with the Triwizard Tournament tasks but also find a way to break the dark magic's hold on the Goblet. This could involve him delving deeper into ancient magic lore and seeking help from the Forbidden Forest's creatures that are often overlooked in the original story.
He might be very confused at first. After all, it's a completely new and unexpected situation.
Well, he might be given a dangerous mission. Maybe he has to infiltrate a Death Eater stronghold or protect a crucial magical artifact.