It could be a new student at Hogwarts. This student comes from a family that has a long - hidden knowledge about the special magical forces. They enter Hogwarts and start to share this knowledge with their new friends, causing a stir in the school. Neville could also be a main character. He has grown so much throughout the series, and he could use his newfound confidence to explore these special magical forces and prove himself even more.
How about a group of outcast students? They are not part of the popular crowd at Hogwarts but come together when they discover the special magical forces. They include a shy Hufflepuff who has a natural affinity for these forces, a Gryffindor who is always looking for adventure, and a Ravenclaw who is brilliant at deciphering the mysteries behind the forces. Together, they form an unlikely but powerful team to uncover the secrets of the special magical forces.
For a Harry Potter Special Forces fanfic, the main characters could include characters like Ginny Weasley. She's shown her strength and bravery in the original series. Kingsley Shacklebolt, as an experienced Auror and a powerful wizard, would be a natural fit. Remus Lupin could also be a main character if the story is set in a time where he could be part of the special forces. Additionally, a group of international wizards and witches could be brought in, each with their own special magical abilities from different magical cultures, adding a diverse element to the special forces.
Some fanfictions might include characters like Neville Longbottom. After growing into a confident and powerful wizard, he could be a valuable member of the special forces. Luna Lovegood might also be there, with her unique perspective on magic and ability to think outside the box, which could help in solving complex problems during their missions.
Obviously, Harry Potter would be one of the main characters. Since it's about him being an animagus.
One idea could be exploring a new magical force that is discovered in the Forbidden Forest. Maybe it's a force that can bring inanimate objects to life temporarily. Another could be a group of students forming a secret club to study and harness these special magical forces outside of Hogwarts' official curriculum.
Well, one possible plot could be that Harry uses his magic skills in a covert way within the special forces. For example, he could use the Disillusionment Charm to make himself and his team invisible during stealth missions. He might also use his quick thinking, which he developed from all his battles at Hogwarts, to outwit the enemies. His ability to sense danger, much like his connection to Voldemort in the original series, could help the special forces avoid ambushes.
Obviously, Harry Potter is the main character as he is the King of Magical Britain in this fanfiction. His friends like Hermione Granger and Ron Weasley are also likely to be important characters. They would probably be his advisors or help him in his various endeavors.
Another possibility is that it's a descendant of an ancient wizarding family. This character has been sheltered from the wizarding world until they discover their second magical core. Their family's secrets and history could be intertwined with the nature of this second core, and they have to navigate the wizarding world while also uncovering their family's past.
It could be a corrupt wizard within the Ministry of Magic's financial department. He might be embezzling funds and using dark magic to cover his tracks. When Harry starts to dig into the strange financial situations in Magical Britain, this wizard tries to stop him by all means, which eventually leads to the bankruptcy as the situation gets out of control.
Neville would also make an excellent main character. He has a natural affinity for plants, and magical creatures are not that far off in the wizarding world. He could be the one to discover a new way to care for ailing magical creatures, perhaps using his knowledge of herbology. For example, he might find a plant that can cure a disease that's been affecting the unicorns in the forest.
There could also be a group of pure - blood wizards who look down on Harry's connection with magical creatures. They see it as beneath them and try to undermine his position as the king of magical creatures. They might spread false rumors about him and try to turn other wizards against him.