For an 'fnaf crossover fanfic', you could do a crossover with a post - apocalyptic world. The animatronics could be the last remnants of a failed amusement park in a world overrun by zombies or mutants. They might have to fight for survival just like the humans. Also, a crossover with a fairy - tale world would be interesting. Picture the animatronics in a world of castles and magic, where they are the dark force that the fairy - tale characters have to overcome.
Begin by choosing the crossover concept. Are you going for a comical crossover like FNAF and a cartoon world, or a more serious one like with a horror - thriller franchise? Once you've decided, make a list of the key elements from each universe. If it's a crossover with a sci - fi world, list things like spaceships, alien species, and advanced technology from that world, and then list the animatronics, the pizzeria, and the mystery elements from FNAF. Then, create a conflict. This could be something like the animatronics causing chaos in the other universe or being hunted down by the forces in that universe. Start writing from there, building up the story bit by bit.
One idea could be that the animatronics from FNAF end up in the Undertale universe. They might be mistaken for strange monsters at first. The Sans character could be particularly intrigued by their mechanical nature and try to figure out how they work.
A good 'fnaf and mystery skull crossover fanfic' should have a well - blended setting. For example, it needs to smoothly incorporate the spooky pizzeria from FNAF and the more modern - day or otherworldly settings of Mystery Skull.
Well, 'My Little Pony in Freddy's World' is also a great one. It delves into how the ponies would react in the FNAF universe. The author does a great job of melding the two very different concepts. For example, the ponies' magic interacts with the animatronics in unexpected ways, creating a lot of unique plot twists.
Sans is an obvious choice. His laid - back yet perceptive nature would make his interactions with the FNAF animatronics fascinating. He might be able to see through their mechanical exteriors to the tortured souls within. And his ability to teleport and use his 'Gaster Blasters' could play an interesting role when dealing with the animatronics' attacks.
There are quite a few out there. 'FNAF - Mystery Skull Alliance' is a great one. It starts with the Mystery Skull gang stumbling upon the FNAF pizzeria and then trying to figure out the mystery behind the animatronics. It has some really cool action scenes where the two universes' characters' skills are put to the test. It's exciting to see how they work together or sometimes clash due to their different natures.
Bonnie from FNAF could be a great crossover character with Foxy. They already have a connection in the FNAF universe, and in a crossover, they could have new adventures together, perhaps in a different time or place.
One idea could be that Sonic and his friends accidentally end up in the FNAF universe. Sonic's speed could be a huge advantage against the animatronics. For example, he could quickly dash around the haunted pizzeria, confusing the animatronics and leading them into traps. Another idea is that the animatronics from FNAF somehow get transported to Sonic's world. The chaos that would ensue as they try to adapt to the bright, colorful and fast - paced Sonic world would be really interesting to write about. Maybe Sonic and Tails would have to figure out a way to send them back while also protecting their friends from the animatronics' unpredictable behavior.