A great plot for Neopets crossover fanfiction could involve a crossover with the world of Digimon. The Neopets might be digitized and end up in the Digital World, having to form partnerships with Digimon to survive and find a way back to their own world. Or, consider a crossover with the DC Universe. Picture Neopets teaming up with superheroes like Batman or Wonder Woman to stop a villain who is threatening both Neopia and Gotham City. It would be interesting to see how their different powers and abilities interact.
One idea could be a crossover with Pokemon. Neopets could find themselves in the Pokemon world and have to learn the ways of Pokemon battles while also trying to find a way back home. Another could be a crossover with Harry Potter. Neopets enter Hogwarts and get sorted into houses, causing chaos as they have their own unique abilities. Maybe a crossover with My Little Pony, where the colorful and magical world of Neopets meets the equally magical Equestria, and they have to work together to defeat a common enemy like a dark sorcerer trying to steal all the magic from both worlds.
One idea could be to have characters from different Skylanders groups team up to face a new, super - powerful villain. For example, the Trap Masters and the Giants could combine their forces.
Maybe a crossover where the characters enter a parallel dimension within the 39 clues world. They could encounter alternate versions of themselves and have to figure out how to get back while also dealing with the unique challenges of that dimension. This would involve exploring new settings and understanding different versions of the 39 clues lore.
A great plot idea would be Android 21 crossing into a world where technology is feared. She'd have to prove that not all advanced technology is bad. Also, she could cross into a world of pirates, using her skills to navigate the high seas and fight off other pirates.
One idea could be a Wolverine and Batman crossover. Wolverine could find himself in Gotham City and team up with Batman to take on a common enemy like Ra's al Ghul who is interested in Wolverine's healing factor. They would have to combine their skills, with Wolverine's brute strength and healing and Batman's detective skills and gadgets.
Well, you could do a crossover with a high - fantasy world. The homunculi could be mistaken for some sort of magical constructs or demons, and they would have to navigate the complex politics and magic systems of that world. They might be hunted by mages who see them as a threat to the natural order. Or perhaps a crossover with a space - opera setting. The homunculi could be part of a crew on a spaceship, their unique abilities being useful for things like ship maintenance or dealing with alien threats.
One idea could be a crossover with the Power Rangers. The Gokaigers could team up with the Rangers to fight a common enemy that threatens both their universes. Maybe they start off as rivals, not understanding each other's ways, but then learn to work together as they realize the scale of the threat.
One idea could be a crossover with the One Piece world and the Harry Potter universe. Katakuri could end up at Hogwarts and have to navigate the magical world. Maybe he uses his mochi powers in a new and unexpected way, like creating mochi that can fly like a broomstick.
Some possible plot ideas include Hermione being mistaken for a powerful Grounder because of her magic. She could then use this to her advantage to broker peace between the different factions. Or maybe she discovers a magical element in The 100's world that she didn't expect, like a magical artifact left over from a pre - apocalyptic civilization. This could lead to a race among the different groups to obtain it, with Hermione in the middle trying to ensure it's used for good.
One idea could be a crossover with 'Scooby - Doo'. The Rugrats could get lost in a spooky mansion while on a family trip and meet the Mystery Inc. gang. Another plot could be a crossover with 'Powerpuff Girls'. Maybe the Rugrats accidentally stumble into Townsville and the Powerpuff Girls have to protect them from Mojo Jojo. A third idea is a crossover with 'Tom and Jerry'. The Rugrats end up in Tom and Jerry's house and chaos ensues as the Rugrats try to play with Jerry and avoid Tom.
A springtrap crossover fanfiction might involve crossing over with a time - travel story. Springtrap could be accidentally sent to different time periods and cause chaos. It could also be a crossover with a space - exploration story. Imagine Springtrap on a spaceship scaring the astronauts. And then there's the possibility of a crossover with a fairy - tale world, where he disrupts the happily - ever - afters.