There could be a really interesting fanfiction where the magical worlds of Charmed and Harry Potter collide with Harry and Maggie. Maybe they team up to fight a new kind of dark magic that threatens both their realms. They could each bring their unique magical abilities to the table. Harry with his wizardry from Hogwarts and Maggie with her powers as a Charmed one.
One common theme is the exploration of different magical powers. Since both universes have their own unique magical elements, fanfictions often focus on how these powers interact. For example, the spell - casting in Harry Potter and the power of three in Charmed.
Well, they might meet in a magical crossroads. Harry could be on a mission related to the wizarding world and Maggie could be dealing with a demon in her Charmed world. And they just happen to cross paths. They'd be initially confused but then intrigued by each other's powers.
One interesting crossover could be the use of spells. For example, a Charmed one might learn a spell from the Harry Potter world like the Patronus charm. It could be used in a new and different way in the Charmed universe, perhaps to fight a new type of demon that is vulnerable to positive magic like a Patronus.
Often, in such fanfiction, new original characters are introduced. They could be the ones who created the charmed lemon in the first place. But it's also possible that characters like Dumbledore could play a significant role. He might know more about the charmed lemon than he lets on and be guiding the other characters from behind the scenes. Neville could also be a main character, using his skills with plants to take care of the charmed lemon or study it.
One popular trope is the 'crossover' where characters from Charmed and Harry Potter universes interact. For example, the Halliwell sisters might meet Harry, Hermione and Ron. Another is the 'power transfer' trope, like a Charmed one getting some magical ability from the Harry Potter world or vice versa. And the 'hidden relation' trope is also seen, such as a character from one universe being related to a character in the other in some unexpected way.
One interesting 'Harry Potter Charmed Fanfiction' story could be one where the characters from 'Harry Potter' and 'Charmed' have to team up to defeat a common dark magic threat. It might involve Harry using his magic skills alongside the Halliwell sisters' unique powers.
Definitely characters from both 'Charmed' and 'Harry Potter'. From 'Harry Potter', Harry, Hermione, and Ron are very likely to be main characters as they are the central figures in the original series. In 'Charmed', the Halliwell sisters, Prue, Piper, and Phoebe, would be prime candidates. Their different powers and personalities would create interesting dynamics when interacting with the 'Harry Potter' characters.
There could also be other characters from the Harry Potter universe like Hermione and Ron. They might be involved in helping Harry navigate this new world of being connected to the Charmed Ones. And from the Charmed side, there could be Leo, their Whitelighter, who might have some interesting interactions with the magical folk from Harry's world.
It could be about a story where Harry Potter is the son of a person who is charmed in some way. Maybe this 'charmed one' has some special powers or a unique background that influences Harry's life in the fanfiction world. It might explore new adventures, relationships, or powers that Harry has because of his connection to this 'charmed one'.