They could be antagonists. Maybe they are a family of dark wizards who oppose Harry and his friends. They could try to steal the Philosopher's Stone or disrupt the Triwizard Tournament.
The Steward family could be allies. For instance, they could have special skills or knowledge that helps Harry in his fight against Voldemort. They might be experts in ancient magic or have a hidden library full of useful spells.
Row Thomas and Jack Thomas could play the roles of young wizards who are part of a secret club that tries to uncover some long - lost magic in the wizarding world. They might be friends or rivals, and their interactions could drive the plot forward. For example, they could be competing to find a powerful magical artifact first, and in the process, they learn important lessons about friendship and the proper use of magic. This would add an interesting layer to the existing Harry Potter fanfic universe.
Harry's family could be powerful allies. His father, for instance, might be a skilled fighter and could join in battles against the dark guilds in Fairy Tail. His mother could use her magic to heal the wounded wizards in the guild. And Harry himself could be a source of inspiration for the Fairy Tail members with his experiences of facing great evil.
Harry's father could be a strong and fearless mage in Fairy Tail, leading quests and battles. His mother might be a healer, using her magic to help the injured in the guild. And Harry could be a young mage with a lot of potential, similar to how he was in the Harry Potter series. He could be the one to discover new magic in the Fairy Tail world.
One way could be to make a member of the Steward family a new student at Hogwarts. They could be sorted into one of the houses and have various interactions with Harry and his friends. For example, they might be in the same year as Harry and be part of a study group or a Quidditch team.
Perhaps Katrina Rinehart could be a seer. In the Harry Potter world, seers are very important as they can predict the future. If she were a seer, she could warn Harry and his friends about upcoming dangers, or she could be misinterpreted like Trelawney sometimes was. She would add an element of mystery and foresight to the story.
He could be a valiant knight. Picture him in shining armor, riding a white horse and coming to the rescue in battles. Maybe he's a knight loyal to House Stark and helps them in their fight against the Lannisters.
Dwarfs can play the role of guardians. They could be protecting ancient magical artifacts or places of great power. For instance, a dwarf might be the sole protector of a hidden chamber in Hogwarts that contains a powerful spellbook.
Hermione would surely play an important role. She could help Harry figure out the details of his inheritance, like deciphering old documents or researching the history behind it.
In Harry Potter fanfic, goblins often play important roles. They are known for their association with Gringotts Bank. They are highly intelligent and skilled in matters of finance and magic related to precious metals and jewels. For example, they guard the vaults in Gringotts with various magical protections. Their significance also lies in their unique culture within the wizarding world. They have their own set of laws and traditions which sometimes clash with those of wizards.
Often, INTPS in Harry Potter fanfiction are the ones who have a deep understanding of the magical theory. They are not as interested in the glory or the social aspects of the wizarding world. Instead, they are focused on understanding how magic really works. They might be found in the library, poring over ancient tomes, trying to unlock the secrets of magic that have been lost over time. They could be the ones who end up making important discoveries about magic that even the professors at Hogwarts are unaware of, like a new way to perform transfiguration or a previously unknown property of a magical creature.