One popular trope is the 'alternate universe' where the story takes place in a different setting or with different rules from the original series. For example, a world where Voldemort won. Another is the 'character rewrite' where a character's personality or backstory is changed. And the 'romantic pairing' trope, like Hermione with Draco, which explores relationships that weren't in the original books.
A popular trope is the 'teacher - student relationship' in a different context. For instance, a fanfiction might explore a deeper bond between Harry and a particular teacher. The'magic item discovery' trope is also seen often, like finding a new powerful magical object. Additionally, the 'crossover' trope, where Harry Potter characters interact with characters from other fictional universes.
One popular trope is the 'enemies - to - lovers' where characters who initially dislike each other, like Draco and Hermione, fall in love. Another is the 'forbidden love' trope, for example, a love between a Muggle - born and a pure - blood in a world with so many class differences in the wizarding world. And of course, there's the 'soulmate' trope where two characters are fated to be together.
One popular trope is the 'alternate universe' where the story takes place in a different setting than the original books. For example, a modern muggle world with a hidden wizarding society. Another is the 'time - travel' trope, which allows characters to go back in time and change events. And the 'found family' trope is also common, where characters form deep bonds outside of their biological families.
One popular trope is the 'coming - out' story. This could involve a character like Harry Potter himself realizing and coming to terms with his bisexuality. It often includes the character's internal struggle, as well as how their friends and the wizarding world around them react.
One popular trope is the 'fish out of water' situation where the main character, often a self - insert or an OC, finds themselves in the middle of a harem of Harry Potter characters. Another is the 'enemies to lovers' within the harem, where some of the characters initially dislike the main character but then fall for them. Also, the 'power - up' trope is common, where the main character gains new magical abilities or knowledge through their interactions with the harem members.
There are several popular tropes. The 'hidden past' trope, where the professor has a secret past that the student gradually uncovers. It adds an element of mystery. Also, the 'life - changing advice' trope, in which the professor gives the student advice that completely alters their path. And don't forget the 'teacher - turned - protector' trope, which often comes into play when the student is in danger.
One common trope is the 'alternate universe' where things are drastically different from the original series, like if Voldemort won the war. Another is the 'character redemption' trope, for example, Draco Malfoy getting a chance to be a good guy in a different way. And there's also the 'romantic pairings' trope, like Hermione ending up with someone other than Ron in some fanfictions.
One popular trope is the 'what if' scenarios. For example, in Game of Thrones fanfiction, 'What if Ned Stark didn't lose his head?' In Harry Potter, it could be 'What if Harry was sorted into Slytherin?' Another is the crossover trope, where characters from both universes meet. This can lead to really interesting interactions as the magic systems and cultures of both worlds collide. And of course, there are the fix - it fics, where fans rewrite parts of the story they didn't like. For instance, in Game of Thrones, giving a more satisfying end to certain characters' arcs.
One popular trope is the 'fish out of water' scenario. Ororo Munroe, coming from the X - Men universe, might find herself in the strange world of Harry Potter, having to adapt to new magic and customs. Another common trope is the 'team - up' where Harry Potter and Ororo Munroe join forces to fight a common enemy, perhaps a dark wizard and a mutant - hating villain combined.
A common trope is the 'power imbalance' which gets resolved over time. Since Thor is a powerful god and Harry is a powerful wizard, initially there might be a struggle for dominance or understanding. And then there's the 'shared destiny' trope. Maybe they are fated to save both the Asgardian and wizarding worlds together. This makes for an interesting dynamic in the fanfiction.
A very common trope is the 'Dark!Harry' concept. In these stories, Harry turns to the dark side, either because of being mistreated or for some other reason. It's interesting to see how the story unfolds when the main hero becomes an anti - hero. Also, the 'Teacher - Student Romance' trope exists, though it's a bit controversial. But it does add an element of forbidden love to the stories.