A common theme is the battle between good and evil. In 'Harry Potter', Harry battles Voldemort; in 'Buffy', she fights vampires and other demons; and 'Morningstar' also has elements of this struggle. So in fanfiction, authors often create scenarios where characters from these different universes team up to fight a greater evil.
Love and relationships are also quite popular. Writers might pair characters from different universes in romantic relationships. For example, a character from 'Harry Potter' might fall in love with a character from 'Buffy'. This can bring a whole new dynamic to the story as they come from different worlds with different values and cultures. It also adds an element of intrigue as they try to navigate their relationship while also dealing with the threats and challenges from their respective universes.
Well, Archive of Our Own (AO3) is another excellent source for fanfiction. It has a very comprehensive tagging system. You can search for 'Harry Potter' and then look for works that might also mention 'Morningstar' or 'Buffy' in the tags or descriptions. Some authors like to create crossovers between different fandoms, and AO3 is a great place to discover these unique and often very creative fan - made stories.
Harry Potter himself is often a popular character in these crossovers. His connection to magic and his hero status in his own world make him an interesting figure to pair with Buffy. He can bring his knowledge of spells and the wizarding world to the mix.
Power and responsibility is also a big theme. Both Harry and Buffy have a great deal of power, Harry as a wizard and Buffy as a slayer. In the fanfiction, they often have to grapple with how to use their power in the right way, especially when they are in an unfamiliar situation like when Buffy is in the wizarding world or Harry is in Sunnydale.
One common theme is the battle between good and evil. Both Harry Potter and Buffy are all about fighting against dark forces. In fanfiction, this often means combining the Death Eaters or Voldemort from Harry Potter with the vampires, demons and other baddies from Buffy's world.
The relationship between Buffy and Angel is a huge theme. Writers like to delve into the emotional turmoil of their love story, given the obstacles like Angel's vampire nature. Also, the fight against the forces of darkness is a popular theme. It allows for new adventures and battles to be written. And there's the theme of self - discovery for both characters, as they grow throughout the fanfiction stories.
One common theme is the clash of different magical systems. Harry Potter's magic is more structured and based on spells and wands, while Buffy deals with more instinctive and primal supernatural powers. When these two worlds collide in fanfiction, exploring how they interact and conflict is a big theme.
One of the most popular themes is alternate universes. Fans love to imagine what would happen if certain events in the original story were different. Another popular theme is character relationships, especially the romantic relationships between characters like Harry and Hermione, which deviate from the original pairings. And of course, there are a lot of fanfictions that focus on the dark side of the wizarding world, exploring how Voldemort could have been even more menacing or what other dark wizards might be out there.
One popular theme is identity. Since Metamorphmagi can change their appearance, fanfictions often explore how this affects their sense of self. Another theme is secrecy. They might have to hide their ability, which creates interesting plotlines.
One of the popular elemental themes is the use of fire. It often represents power and passion. Many fanfictions have characters who can conjure and control fire in unique ways, like creating phoenix - like flames. It gives a sense of danger and intensity to the story.
One of the most popular themes is the 'What if' scenarios. For example, what if Harry had been sorted into Slytherin? Another common theme is the exploration of character backstories that J.K. Rowling didn't fully delve into in the original books, like the early life of Severus Snape. And relationships, not just romantic ones but also friendships, are often explored in-depth. For instance, the friendship between Harry, Ron and Hermione from different perspectives.