The goblin might be helping Harry because Harry once did a favor for the goblin's family. In the fanfiction, the goblin could be an expert in ancient magic spells that have been long forgotten. He could teach Harry these spells, which would give Harry an edge in the fight against the forces of evil. For example, a spell that can turn the dark wizard's own magic back on them.
Perhaps the goblin is an outcast from the goblin community. He sees something in Harry that reminds him of his own struggle for acceptance. So he decides to help Harry. The story could revolve around their journey together, facing various challenges like dodging the Ministry of Magic's strict regulations and avoiding the traps set by Voldemort's remaining followers. They might also discover a new form of magic that is a combination of human and goblin magic, which could change the wizarding world forever.
The goblin could start off as a mysterious figure. For instance, he could first appear to Harry in a dream, giving him cryptic messages. As the story progresses, we learn that he has his own motives, like seeking revenge on a wizard who wronged him in the past. His character could develop from being a bit of an enigma to a fully - fleshed - out ally with a complex backstory.
One possible plot could be that Superman is somehow transported to the wizarding world. He's lost his powers there, and Harry Potter has to help him get back to his own world while also protecting him from the various magical threats in the wizarding world. Along the way, Harry could teach Superman some basic magic to help him defend himself, and Superman could use his strength and heroism in a different way within the magical setting.
The plot might involve the goblins approaching Harry Potter for help in protecting their underground kingdoms from a new threat, like a horde of dark creatures. Harry, being the hero he is, agrees to form an alliance. They then train together, combining wizard magic with goblin technology and combat skills. This alliance not only helps in fending off the threat but also makes the wizarding community re - evaluate their relationship with the goblins.
Well, it could be about a young wizard or witch who is sent to learn from goblins. Maybe they study the unique magic goblins possess, like their skills in handling precious magical items. The plot might involve the main character facing challenges in understanding the goblin way of life and magic, and eventually using what they've learned to solve a big problem at Hogwarts or in the wizarding world.
Maybe the female goblin is an outcast in the goblin community. She decides to seek refuge in Hogwarts. There, she has to deal with the prejudice of some students and teachers who are suspicious of her. But she also makes some true friends among the students, and together they work on a mystery that threatens both the goblin and wizarding worlds, like a dark magic that is spreading.
Maybe Harry discovers that the goblins are being wrongly accused of something in the wizarding world, like being framed for a theft in Gringotts. So he decides to use his influence and skills to defend them, showing that not all goblins are bad and that they have been misjudged.
Well, perhaps Harry stumbles upon a goblin in a dangerous situation, like being trapped by dark wizards who want to steal the goblin's magic artifacts. Harry uses his skills and spells to fend off the bad guys and rescue the goblin.
One possible plot could be that Harry Potter uses his magic to help The Hulk gain better control over his anger. Maybe he could use a spell to create a calming aura around The Hulk whenever he starts to get angry. This would allow The Hulk to think more clearly and not go on a destructive rampage all the time.
In this fanfiction, perhaps there is a disease spreading among the centaurs. Harry Potter, having studied some advanced potions, offers to help. He spends time in the centaur community, brewing potions and using his knowledge of magic to heal the sick centaurs. Along the way, he learns more about centaur culture and they come to respect him greatly.
It could be that the Goblin King's magical artifacts are being stolen one by one, and this is weakening his realm. Harry Potter gets wind of this and decides to help. He teams up with some of his Hogwarts friends like Hermione and Ron. They use their combined knowledge of magic and spells to track down the thieves and return the artifacts to the Goblin King, thus saving his kingdom.