As mentioned before, Franz Kafka wrote 'The Metamorphosis' which is considered by some as an early form of magical realism. Kafka was a Czech - born German - language writer. His works often explored themes of alienation, existential angst, and the absurd. In 'The Metamorphosis', his use of the magical transformation of Gregor into an insect to explore the relationship between the individual and society was revolutionary at the time.
Severus Snape is another character who could be considered a potions genius in fanfic. In the official story, he was a master of potions. Fanfic writers might explore more of his early days as a potions prodigy or create scenarios where he imparts his deep knowledge of potions to other characters in unique ways.
Often, there might be an alchemist as the main character. In 'The Alchemist's Quest for Potions', the alchemist, Alexander, is on a journey to find the rarest potions in the world. He faces many challenges and meets various interesting characters along the way. Another common type of main character could be a potion merchant like in 'The Potion Merchant's Tale', who has to deal with competition and the mystery behind some special potions.
Hermione is often a common character. She might be helping Harry with research related to the potions professor's strange behavior or new potions they are working on. For example, she could be scouring the library for information about a rare ingredient the professor has introduced.
Obviously, Harry is a main character. Hermione might also be there as she is good at potions and can help Harry. And Snape could be a prominent figure as he is the potions teacher.
An old and reclusive potions master who has a secret knowledge about Snitches and potions could be a main character. He or she could be drawn out of seclusion when some strange events start to occur involving Snitches and potions. This character would bring a lot of mystery and depth to the fanfiction, as they have a vast knowledge of the magical world that others don't.
It could be Malfoy. He often has a vendetta against Harry and might have found a way to make him collapse during potions class, either by tampering with his ingredients or distracting him in a way that leads to a mistake in the potion - making process.
The Defiant Immortal written by Er Gen and the mortal immortal biography written by Forgotten Words, who wrote it first and who wrote it later.
Egen's Rebel Immortal was a fantasy novel written by Egen that was first published in 2011, while the Legend of Mortal Cultivation written by Forgotten Words was published in 2013. Therefore, the Defiant Immortal was written a year earlier than the Mortal Cultivation Biography.
Well, in some fanfics, a character might be poisoned by a dark potion and the only antidote is a love potion. This shows an interesting interaction between different types of potions in the HP universe. Also, a love potion could be combined with a potion that gives the drinker special abilities, and this combination could lead to a character having the confidence to pursue their love interest. Another way they interact is when a love potion is used to break a curse that was placed on someone using a different type of HP potion.
One interesting fanfic could be about a young wizard who accidentally drinks a love potion meant for someone else. He then goes on a wild adventure trying to figure out how to reverse the effects while also dealing with the chaos it causes in his relationships. Another could focus on a potion - maker who creates a new type of love potion that has unexpected side - effects and how it impacts the wizarding community. There might also be a fanfic where a character uses a love potion to win the heart of their crush, but then realizes the moral implications of their actions.