Well, a typical trope could be the redemption arc. Maybe the character was a villain in their past life and now, being reborn, they strive to be good. There's also the whole 'fitting into the supernatural society' thing. Since the Vampire Diaries world has its own rules and hierarchies, the reborn character has to learn and adapt. Plus, the mystery of their rebirth is often explored. What caused it? Is there a greater purpose? These are all common elements.
Some common tropes include the reborn character having a connection to an ancient prophecy. This adds an element of fate and destiny to the story. Another is the sudden appearance of a long - lost relative or mentor who helps the character navigate their new life. And of course, there's the inevitable clash with the existing power players in the Vampire Diaries universe, like the Originals. This creates conflict and drama, which is what makes these fanfictions so interesting.
One common trope is the mysterious stranger. He shows up in Mystic Falls out of nowhere and has a dark secret. Another is the heroic protector. He sees himself as the one to save the town from all the vampire and supernatural threats. There's also the love - struck fool trope where he falls head over heels for one of the female characters, like Elena, and will do anything to win her over.
One common trope is the self - insert being a new student in Mystic Falls High. It's an easy way to introduce them into the main setting and start interacting with the characters. Another is having a mysterious past that somehow ties into the existing supernatural lore of the show. For example, their family might have been involved in a long - forgotten vampire - witch feud. The 'love triangle' trope also appears often, where the self - insert gets caught between two of the main characters, like being attracted to both Damon and Stefan.
One popular trope is the 'enemies to lovers' scenario. In both Charmed and Vampire Diaries, there are characters with opposing views or allegiances that fans like to pair up romantically. For example, in Vampire Diaries, a fanfiction might explore the relationship between a vampire and a vampire hunter who start off hating each other but gradually fall in love. Another trope is the 'alternate universe' where the story takes place in a completely different world from the original shows, like a world where the witches in Charmed have different powers or the vampires in Vampire Diaries don't have to feed on blood. And the 'time - travel' trope is also common, where characters go back in time to change events in the shows' histories.
One popular trope is the crossover aspect itself. Writers often like to bring the characters from Spider Man and Vampire Diaries together in unexpected ways. For example, having Spider Man face off against the vampires in Mystic Falls. Another is the 'fish out of water' trope, like if Peter Parker somehow ended up in the Vampire Diaries' universe and had to adapt to its rules.
One common trope is the 'fish - out - of - water' situation. For example, when the characters from Supernatural first arrive in Mystic Falls, they are confused by the different rules of the vampire society there compared to the monsters they usually hunt. Another trope is the 'power - struggle'. This could be between the powerful vampires like the Originals in Vampire Diaries and the angels or demons from Supernatural. They often have to compete or cooperate depending on the situation in the fanfic.
One popular trope could be the 'outsider' trope. Pearl and Jonathan might be seen as outsiders in the vampire community, and the fanfiction could revolve around them trying to find their place. Another is the 'redemption' trope, where they might have done something wrong in the past and are now seeking redemption.
The 'time - travel' trope can be seen in some fanfictions. A character from 'Vampire Diaries' might travel back in time to the era of 'Merlin' and change the course of events. Or vice versa. The 'hidden identity' trope is also popular. A character might be hiding their true identity as a wizard from 'Merlin' in the 'Vampire Diaries' world. And the 'battle of powers' trope, where characters from both series test their powers against each other to see who is stronger.
One popular trope is the 'enemies to lovers' scenario. For example, a vampire and a hunter might start off hating each other but gradually fall in love. Another common one is the 'soulmate' trope, where two characters are fated to be together. And of course, there's the 'redemption' trope, where a character who has done bad things tries to make up for it.
One popular trope is the powerful Mikaelson sister. In many fanfictions, she's often depicted as having unique powers that even her brothers might envy. For example, she could have the power to control time, which adds an interesting dynamic to the story. Another trope is the love triangle. Maybe she's caught between a vampire from another clan and a werewolf, creating a lot of drama and tension.
The 'Forbidden Love' trope is also common. Kai might fall in love with a character he shouldn't, like a vampire hunter or a witch from an opposing coven. It creates a lot of drama and tension in the story. For instance, in some fanfictions, Kai's love interest is from a family that has been sworn enemies of his for generations, and they have to fight against all odds to be together.