A Muggle - born student could be the main character. They might not have the same preconceived notions about magical beasts as the pure - bloods and half - bloods. Their fresh perspective could lead to new ways of handling and understanding the beasts. They could be the one to discover a new breed of beast that has been hiding in plain sight, right on the outskirts of Hogwarts.
It could be a new student at Hogwarts who comes from a family of non - magical beast tamers in the Muggle world. They bring their unique skills and perspective to the wizarding world of beast taming. For example, they might know how to calm a spooked horse in a way that wizards don't, and apply that knowledge to magical steeds.
Maybe it's an older wizard who has been studying arithmancy in secret for years. He decides to come out of the shadows and share his knowledge at Hogwarts, becoming the central figure in the story as he mentors the students and uses his skills to solve various magical problems.
Perhaps it could be an older version of one of the main characters from the original series. For instance, an adult Harry Potter who has become a master of certain types of magic and is now on a new adventure. He could be traveling to different parts of the wizarding world to teach or to learn more advanced magic techniques. Another possibility is that it could be a character like Dumbledore in his younger days when he was on his own journey to become the great wizard he was known to be.
It could be a new student at Hogwarts who discovers their talent for runes early on. Maybe they come from a family with a long - forgotten tradition of rune - making and they are the first in generations to revive it.
Hermione could also be a great main character. Given her thirst for knowledge, she might be the one to first study and understand the concept of Haki in the fanfiction. She could then use it to her advantage in battles and also to help her friends, perhaps even using Haki - enhanced magic to break through difficult spells or magical barriers.
Perhaps it could be a well - known character from the original Harry Potter series who discovers a new aspect of their magic. For example, Hermione might find that she has an aptitude for seal magic while researching some ancient texts in the library. She could then use her knowledge and newfound ability to solve some of the problems in the wizarding world.
It could be an original character created specifically for the fanfiction. Maybe a young wizard or witch who discovers their Shadow Master abilities by accident.
It could be an original character created specifically for this fanfiction. Maybe a young wizard or witch who has always been an outcast in the wizarding world and discovers their unique ability to connect with dark dragons.
The pure - blood supremacists could be the main antagonists. They might oppose Harry's ideas of a more inclusive and democratic political system as they believe in the superiority of pure - blood wizards.
It could be the Death Eaters who see Harry's new - found mastery of darkness as a threat to their own power and ideology. They might try to either recruit him or destroy him. Voldemort himself could be an antagonist, feeling that Harry is encroaching on his territory as the most powerful dark wizard.