Midnight Blues Harry Potter Fanfiction: Who could be the main character in it?

Since I haven't read it, I can't say for sure. But it's likely that the main character is the Midnight Guardian.

One possible plot idea could be a story set in the midnight hours at Hogwarts. Maybe the main character, under the influence of the'midnight blues', discovers a hidden part of the castle that has been forgotten for centuries. It could be filled with ancient magic and secrets waiting to be unraveled.

Severus Snape is likely to be a main character as it is often his perspective that is explored in a 'Midnight Sun' - style fanfiction. His complex personality and his relationship with other characters in the Harry Potter universe make him a central figure.

A lesser - known character like Ernie Macmillan from Hufflepuff could be the main character. As a prefect, he could bring out the unique qualities of Hufflepuff house. He might have to deal with issues like other houses underestimating Hufflepuff students. His story could focus on how he promotes the values of hard work, loyalty, and fairness within the house and the school as a whole.

Hermione could be a great main character. She's curious and intelligent, so she would be really interested in exploring the secrets of the diary. She could use her vast knowledge of magic to try and figure out how the diary works and what secrets it holds.

Harry Potter himself could be the main character as a revenant. Maybe he has some unresolved issues from his past, like his relationship with his parents. His revenant form could be on a journey to fully understand their sacrifice and his own place in the wizarding world's history.

It could be a younger sibling of one of the main characters in the original series. For example, Ginny's little sister who has big shoes to fill but also a great passion for Quidditch.

Hermione could be a great main character in an elementalist fanfiction. Her intelligence and thirst for knowledge would make her eager to learn about and master elemental magic. She could be the one to discover a long - lost elemental spell book and start exploring the powers.

It could be a new student at Hogwarts who has a natural talent for dealing with beasts. This student could be from a family that has always had an affinity for magical creatures but has kept it a secret until now.

A Muggle - born mouse. It could be a unique concept where a mouse from the Muggle world somehow ends up in the wizarding world. It would be interesting to see how it copes with all the magic and the rules of the wizarding society.