Hermione Granger would also make a great main character. Given her thirst for knowledge, she would be eager to study the alchemical concepts brought in by the Red Lotus Alchemist. She could be the one to figure out how to blend the two worlds' knowledge and use it to protect Hogwarts from new threats.
Another possibility is a new character created specifically for this fanfiction. A young alchemist from the Red Lotus Alchemist's world who gets lost in the Harry Potter universe. This character could be the main focus as they try to find their way back home while also getting involved in the magical affairs of Hogwarts, making new friends and learning about magic in the process.
In the fanfiction, there could be a plot where the Dark Arts in Harry Potter are somehow related to a corrupted form of alchemy from the Red Lotus Alchemist's world. Harry and his friends then have to journey into the alchemist's realm to find the origin of this corruption and a way to stop it, facing all sorts of strange alchemical creatures and challenges along the way.
It could be really interesting. Maybe Harry would use alchemical powers instead of magic. For example, he might transmute objects to solve problems in Hogwarts.
I'm not sure if there is exactly such a fanfiction. Fanfiction platforms like FanFiction.net or Archive of Our Own might be good places to start looking. You can search for the relevant keywords there.
Voldemort could be the main antagonist. He would see the Red Ranger as a strange and powerful being that could potentially disrupt his plans. He might try to steal the Ranger's powers for his own use or simply eliminate him to ensure no one stands in his way of taking over the wizarding world.
In many fanfictions, Harry Potter can indeed be an alchemist. This gives the story a new dimension. For example, he could use alchemical knowledge to solve problems that the original Harry in the books might not have been able to. He might discover new ways to fight dark magic using alchemical principles. It also allows for crossovers with other alchemical - themed stories or concepts. Fanfiction writers often take liberties to expand on the character's capabilities, and making Harry an alchemist is one such creative way.
Well, it depends on the specific fanfiction. There are countless fanfictions out there, and while many might not portray Harry as an alchemist, there are some that do. These fanfictions often take elements from the original series, like Harry's intelligence and his thirst for knowledge, and expand on them in the context of alchemy. For example, he could be shown studying ancient alchemical texts, trying to create potions with alchemical properties, or even using alchemy to solve some of the problems he faces in the wizarding world. It's a really cool way to remix the Harry Potter universe.
How about Neville Longbottom? He could be the main character in a fanfiction set in the Chamber. Neville, who has always been underestimated, could show his true courage and strength. He might discover a hidden ability that helps him face the challenges in the Chamber, perhaps something related to his connection with plants, which could play a crucial role in defeating the Basilisk or whatever new threat is in the Chamber.
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.