Well, a popular trope is the 'Genius Wizard' for male OCs. He's super - smart in all his classes and often comes up with new spells or magical theories. The 'Loyal Sidekick' trope is also seen. He sticks by the main characters through thick and thin. And then there's the 'Troubled Past' trope. Maybe his family was killed by dark wizards, and this shapes his actions and decisions throughout the fanfic.
One common trope is the 'Mysterious Newcomer'. He arrives at Hogwarts and everyone is curious about him. Another is the 'Chosen One' trope, similar to Harry, where he has a special destiny or power. There's also the 'Rebel' trope, where the male OC doesn't follow the normal Hogwarts rules and causes some chaos. For example, he might start a secret club that practices unapproved magic.
One common trope is the 'New Student' trope. The fem OC arrives at Hogwarts as a new student, often with some mysterious past or special ability that makes her stand out. Another is the 'Love Interest' trope, where she becomes a love interest for one of the main characters, like Harry or Draco. There's also the 'Outcast' trope, where she doesn't fit in with the typical Hogwarts crowd due to her unique views or powers.
There's the 'legacy' trope. The male OC could be related to a famous MCU character and has to live up to their name or break free from their shadow. For instance, he could be the son of a fallen hero. Another trope is the 'chosen one' trope. He's the only one who can defeat a certain big bad in the fanfic. And the 'mentor - mentee' trope, where he either mentors a younger character or is mentored by an established MCU hero like Captain America or Iron Man.
One common trope is the 'lost heir' trope. The OC is often revealed to be the heir of some important clan or have a special bloodline. Another is the 'outsider who becomes a hero' trope. They start as an unknown in the Naruto world but through their skills and determination, they rise to prominence. The 'love interest for a main character' trope is also seen a lot, where the OC becomes romantically involved with Naruto or another main character.
One interesting 'Harry Potter' fanfic on TV Tropes could be those that explore alternate universes. For example, some might show what would happen if Harry was sorted into Slytherin instead of Gryffindor. This changes the whole dynamic of his relationships and the story. Another type could be the ones that focus on minor characters and give them more in - depth backstories, like Neville Longbottom getting a more central role and his journey of self - discovery outside of just being Harry's friend.
Many male OCs are also shown to befriend the main Naruto characters. They might start as rivals but then develop a deep friendship. This helps them be integrated into the existing Naruto storyline and also allows for some interesting interactions and story developments.
One common trope is the 'hidden power' trope. In many fanfics, a character, often a new or overlooked one, discovers they have a powerful and previously unknown magical ability. For example, a Hufflepuff student might find out they can control time in a way not seen before in the wizarding world. Another is the 'alternate universe' trope where the story is set in a completely different version of the Harry Potter universe, like a world where Voldemort won the war and the characters have to deal with the consequences. The 'teacher - student relationship' trope is also popular, where a deeper bond forms between a student and a teacher beyond the normal classroom dynamic, like a special mentoring relationship between Harry and a new, young teacher.
One common trope is the 'alternate universe' where the story takes place in a different setting than the original books. For example, a modern-day muggle world with hidden wizarding elements. Another is the 'character redemption' trope, like Draco Malfoy being redeemed and becoming friends with Harry. And the 'power - up' trope is also seen, where a character discovers new and greater magical abilities.
One common role is that of an exchange student. They come to Hogwarts to experience the British way of magic and create cross - cultural friendships. This allows for a lot of fun interactions as they share their American magic knowledge with the Hogwarts students.
Many male OCs are also unique in their abilities. Some might have a special form of Haki or a new type of Devil Fruit power. They use these abilities to make their mark in the 'One Piece' world. And they usually have a backstory that ties into their motivation. It could be something like seeking revenge for a lost family or proving themselves to the world. This backstory gives depth to their character and makes their actions more understandable in the context of the fanfic.
Well, a typical trope is the main character having special abilities due to their reincarnation. This could be something like enhanced magic skills or the ability to understand ancient magic more easily. For instance, they might be able to cast spells without a wand more effectively than others. Another common thing is that they often have a different perspective on the Hogwarts houses. Instead of the usual biases, they might see the value in all houses and try to bridge the gaps between them. And, of course, there's the trope of falling in love with a character in a different way than in the original story. Maybe the reincarnated character ends up with someone who was just a minor character in the original.