A great crossover idea in a Gravity Falls x MLP fanfic could involve the Weirdmageddon from Gravity Falls spreading to Equestria. The ponies would be faced with the strange and dangerous creatures from Gravity Falls. The Elements of Harmony could be used in new ways to combat the chaos. And the characters from both shows would have to learn from each other. The ponies could teach the Gravity Falls characters about friendship and harmony, while the Gravity Falls crew could show the ponies how to face really strange and otherworldly threats.
Well, in a Gravity Falls x MLP fanfic, we might see Bill Cipher causing chaos in Ponyville. The ponies, with their magic, would have to figure out how to stop him. And the Mane Six could team up with the Pines family. For example, Rainbow Dash and Dipper might work together, with Rainbow Dash using her speed and Dipper using his smarts to solve problems.
One interesting crossover could be the characters from Gravity Falls ending up in the world of MLP. Maybe Dipper and Mabel could meet Twilight Sparkle and her friends. They could go on adventures together, like exploring the Everfree Forest in MLP's world. Dipper's love for mysteries might lead him to study the magic in Equestria.
One idea could be that the ponies from MLP accidentally end up in Gravity Falls. Twilight could be intrigued by the strange anomalies in Gravity Falls and try to study them with Dipper's help. Maybe Pinkie Pie's party - planning skills could be used to liven up Gravity Falls' rather spooky events.
One interesting crossover could be the characters from Gravity Falls and Steven Universe teaming up to solve a mystery that involves both the Gem world and the strange happenings in Gravity Falls. For example, Dipper and Steven might combine their knowledge of the supernatural to figure out a new threat.
Mabel and Pinkie Pie would be a fun pairing. Mabel is so energetic and loves to have fun, just like Pinkie Pie. They could throw parties together, come up with crazy games, and just generally spread joy throughout both their worlds. Their combined energy would be really entertaining.
Another idea in the fanfiction could be that Gravity Falls has a hidden connection to the wizarding world. Maybe there are witches and wizards who have been secretly living in Gravity Falls for centuries. Dipper and Mabel could discover this connection and start learning magic from them. They could then use their newfound magical abilities along with their existing skills to explore the mysteries of both Gravity Falls and the wizarding world.
The crossovers where the Avengers have to deal with Gravity Falls' supernatural villains are really interesting. For instance, when they face Bill Cipher. It's fascinating to see how the Avengers' powers stack up against such a powerful and otherworldly foe.
A great crossover could involve a battle between the magic of MLP and the power of Pokemon. Imagine Twilight Sparkle using her magic against a powerful Pokemon like Charizard. Or perhaps the Mane 6 team up with a group of Pokemon trainers to fight a common enemy. They could combine their strengths, like Rarity using her fashion skills to create cool outfits for the Pokemon trainers while they battle. It would be a really unique and exciting story.
One idea could be a crossover between MLP and a popular fantasy series like Lord of the Rings. Ponies could take on the roles of hobbits, elves or dwarves in an adventure to save Equestria from a Sauron - like villain. Another could be a crossover with a superhero universe, where ponies gain superpowers and fight against evil forces. Maybe a crossover with a classic fairy - tale world, like Wonderland from Alice in Wonderland, and ponies have to navigate through the wacky and strange world.
One interesting 'Bipper Gravity Falls Fanfic' could be about Bipper's attempts to take over the town in a more comical way. Maybe he tries to turn all the residents into his minions but keeps getting thwarted by Dipper and Mabel's wacky schemes.
In some fanfics, the Hulk might befriend Fluttershy. It's an unexpected pairing but it works. Fluttershy's gentle nature could potentially calm the Hulk down when he's angry. And the Avengers would be introduced to the magic of Equestria, like the Elements of Harmony which could be a key factor in defeating a common enemy.
One idea could be that the characters from Gravity Falls end up in the Don't Starve world. Dipper and Mabel could try to use their mystery - solving skills to figure out how to survive. Maybe they meet Wilson from Don't Starve and together they try to find a way back home while also dealing with the various threats in the Don't Starve world like hounds and the dark." ,"Answer2": "A plot could involve a strange portal opening between Gravity Falls and the Don't Starve universe. The Pines family, including Grunkle Stan, get sucked in. In this new world, they have to adapt to the rules of survival. They might discover that some of the creatures in Don't Starve are related to the mysteries in Gravity Falls. For example, the shadow creatures in Gravity Falls could have a connection to the dark forces in Don't Starve. They then embark on a journey to close the portal and return home." ,"Answer3": "Perhaps the magic in Gravity Falls somehow gets intertwined with the magic of the Don't Starve world. Characters like Bill Cipher from Gravity Falls could find a way to manipulate the Don't Starve world to his advantage. Meanwhile, the survivors in Don't Starve have to team up with the Gravity Falls characters to stop Bill. This would create a lot of interesting interactions as the Gravity Falls characters are used to a different kind of danger compared to those in Don't Starve. There could be a battle of wits and powers between Bill and the combined forces of both universes.