Who could be the potential characters in a 'Harry Potter and the Order of the Phoenix' secret crossover fanfic?

Well, it could be about Harry unknowingly crossing over with a character from another magical universe. Maybe he meets a young wizard from a different school who has a unique power that could help in the fight against Voldemort. They could team up secretly and use their combined magic to outwit the Death Eaters in ways the Order of the Phoenix hasn't thought of yet.

One possible secret in a 'Harry Potter and the Order of the Phoenix' fanfic could be a hidden relationship between minor characters. For example, a friendship that develops into something more between two students who were previously just acquaintances. This can add an interesting layer to the story.

Luna Lovegood would be an interesting addition. Her unique view of the world and her kindness would make her a great part of the harem. Draco Malfoy could also be thrown into the mix in a more reformed state, adding some tension and complexity. And from a crossover aspect, perhaps a mermaid character who has the ability to transform into a human during the wedding and is drawn to Harry's heroism.

Well, in this type of fanfiction, Hermione could also be an important character, but in a different light. Maybe she tries to stop an evil Harry, or perhaps she is corrupted by him and becomes his accomplice. Other characters like the White Witch from Narnia could be involved. Her icy magic and cold - hearted nature could be an interesting contrast or complement to an evil Harry's powers. And don't forget about characters from other YA dark fantasy series, such as the Darkling from Shadow and Bone, who could potentially cross paths with an evil Harry.

Hermione Granger would definitely be a key character. Her intelligence and magical ability would make her an important part of any harem situation around Harry. Then there could be characters like Arwen from 'Lord of the Rings'. Her beauty and elven magic would bring a different dynamic. Also, Sakura from 'Naruto' could be included. Her medical ninjutsu and strong will could add to the mix in the harem.

There are also original characters who are family members of the existing characters. For instance, a long - lost relative of Sirius Black who has their own motives and secrets. They can add a layer of mystery and family drama to the fanfic, as they might have different views on how to deal with the threat of Voldemort compared to the other members of the Order.

The important characters in 'Harry Potter and the Order of Phoenix novel' are many. Harry Potter, the protagonist, is the one around whom the story revolves. His friends Hermione and Ron are always by his side, with Hermione's intelligence and Ron's loyalty being important aspects. Sirius Black, Harry's godfather, is a central figure in the Order of the Phoenix. Dumbledore, the wise and powerful headmaster, is a guiding force. Luna Lovegood, with her dreamy and eccentric nature, becomes an important part of Harry's circle. And Dolores Umbridge, the strict and cruel Ministry - appointed teacher, is a major character as she creates so many problems at Hogwarts. Other characters like Neville Longbottom also start to show more of their potential and importance in this story.

Well, if we consider other shonen - style series, someone like Naruto from 'Naruto' could be a potential crossover character. His ninja skills and strong will could create some interesting dynamics with the 'world trigger' characters.

Harry Potter and the Order of the Phoenix was a fantasy novel series composed by JK Rowling, which was divided into seven books.

Harry Potter and the Order of the Phoenix is the fourth book in the Harry Potter series by JK Rowling. It tells the story of Harry Potter and the evil Lord Voldemort who fought a life-and-death battle and finally foiled his evil plan to protect the magical world. This book can be purchased or read in various channels, including online bookstores, physical bookstores, libraries, e-books, etc. If you want to know some background information or plot outline before reading, you can also search for relevant information on social media or websites.