Another reason is the potential for character growth. Characters from both shows can learn from each other. Sam Winchester could learn about loyalty from Buffy's friends, while Buffy could learn about the wider scope of the supernatural world from the Winchesters. It also allows for some great fan - service moments, like when all the characters team up for a big battle against a powerful enemy.
The appeal lies in the combination of two beloved supernatural universes. Fans of both shows get to see their favorite characters interact. For example, seeing Castiel meet Giles is really exciting as they both have such different but important roles in their respective shows.
The contrast between the two worlds. Bones is all about science, forensics, and a more realistic (within the show's context) setting. Buffy, on the other hand, is full of magic, vampires, and demons. When you cross them over, you get a unique blend. For example, Bones might try to use scientific methods to understand Buffy's world of the supernatural, and Buffy could introduce Bones to a whole new way of thinking about things that can't be easily explained by science.
The combination of different mythologies. Buffy has its own set of vampires, demons, and magic, while Supernatural has a vast array of creatures. When these are combined, it creates a whole new world of possibilities.
The contrast. It's appealing because it shows the contrast between the normal and the supernatural. The normal girl represents the ordinary world that we all know, and when she's thrown into Buffy's world, it creates interesting situations.
Well, it's about the characters. Both shows have a great set of characters. 'Supernatural' has the complex and lovable Winchester brothers, and 'Arrow' has Oliver Queen with his own set of friends and enemies. In crossover fanfiction, these characters can interact in ways that are not possible in their original shows. Imagine Dean Winchester teaching Oliver Queen some of his hunting skills, or Felicity Smoak helping Sam Winchester with some tech - related supernatural mystery. It's these kinds of interactions that make it appealing.
The combination of two beloved supernatural shows. 'Supernatural' has its own dark and gritty take on the supernatural world, while 'Charmed' offers a more family - centric magical universe. When combined, it creates a new and exciting setting for stories.
The appeal of preacher crossover fanfic lies in the combination of different universes. It allows fans to see their favorite characters from 'Preacher' interact with characters from other shows or stories. For example, if 'Preacher' crosses over with a superhero story, it creates a whole new dynamic.
The appeal of 'Charmed' and 'Supernatural' fanfic lies in the combination of two beloved supernatural universes. Fans get to see their favorite characters from both shows interact. For example, seeing Piper freeze a demon while Sam and Dean Winchester try to exorcise it is exciting. It also allows for new and creative storylines that the original shows might not have explored.
A good blend of the two universes' mythologies. In a Buffy Supernatural crossover, it's important to merge the different supernatural elements in a way that makes sense. This could be how the vampires in Buffy's world compare to the demons in Supernatural, or how the magic works in both. It should feel like a natural combination, not just thrown together randomly. The plot also needs to be engaging. It should have a clear goal or mystery that draws the reader in and keeps them interested throughout the story. Maybe it's a new threat that only the combined forces of Buffy and the Winchesters can face.
It gives the chance to see the 'the loud house' characters in new scenarios. For example, if they cross over with a space - themed show, they get to be in outer space which is a completely different setting from their normal home environment. This exploration of new settings and interactions with different characters from other shows makes it very appealing.