A cool fanfiction idea is a story where a legendary Pokémon ends up in Equestria. For example, Mewtwo could arrive and the ponies initially fear it due to its power. But then they realize Mewtwo is just lost and confused. The ponies, with their kind hearts, try to help Mewtwo find its way back home. Meanwhile, the Pokémon could learn about the magic and friendship in Equestria.
One idea could be that the Pokemon are discovered in the world of MLP. The ponies could be both amazed and a bit scared at first. For example, Pikachu's electric powers might seem like a strange and powerful magic to them. They would have to figure out how to interact with these new creatures.
One idea could be that the ponies from MLP accidentally enter the Pokemon world through a magical portal. They team up with some Pokemon trainers to stop an evil team that's trying to use both pony magic and Pokemon power for their own bad deeds. Another plot could be a Pokemon tournament where ponies are allowed to participate using their unique abilities as if they were Pokemon. For example, a Pegasus pony could use its flying skills in a battle like a Flying - type Pokemon.
In Pokemon and MLP crossover fanfiction, the idea of Pokemon living in the Equestria from MLP is quite cool. Some Pokemon might fit right in, like the grass - type Pokemon that could interact with the natural environment there. And then there are the battles. Instead of the normal Pokemon battles, they could be adapted to fit the more magical and less violent nature of MLP. Maybe instead of fainting, a Pokemon just gets tired and needs some magical energy to recover. And the different Pokemon forms could be seen as different 'levels' of magical creatures in the eyes of the ponies.
In 'pokemon meets mlp fanfiction', a cool concept might be the trading of skills. Maybe a Pikachu could teach an electric - based spell to a unicorn pony, or a pegasus pony could show a flying - type Pokemon some new aerial maneuvers. This cross - over of abilities can create really engaging storylines.
One idea could be a villain OC who has the power to manipulate dreams. They could enter the ponies' dreams and create nightmares, causing chaos and fear. This villain could be motivated by a desire for power over the dream realm.
Well, in 'mlp meets undertale fanfiction', there could be crossovers of characters. Picture Fluttershy befriending a shy monster in Undertale. Her kind nature could help the monster come out of its shell. Also, the magic system in MLP could blend with the combat or determination - based mechanics in Undertale. It might create new ways for the characters to overcome challenges. For instance, Twilight Sparkle's magic could be used to solve some of the puzzles in the Underground in a different way than the normal Undertale characters would.
Another interesting concept is to focus on how the next generation is different from the original ponies. Maybe they have new magical abilities or different social structures. You could write about a young pony who struggles to fit in because of these differences, but in the end, they use their uniqueness to make a positive impact on their community.
One idea could be that Godzilla somehow ends up in Equestria. The ponies are initially terrified but then realize Godzilla is more interested in protecting the land from some new dark force that has emerged there. Maybe Godzilla's size and power are a mystery to the ponies at first, and Twilight Sparkle tries to study him to figure out how he got there.
A good MLP female OC fanfiction idea could be centered around a female OC that is a hybrid of different pony types. Maybe she's part unicorn, part pegasus and part earth pony. She feels like an outcast in Equestria at first because she doesn't fit into any one group. But as the story progresses, she uses her unique combination of abilities to save Equestria from a new threat. Or perhaps a female OC who is a fashion - forward pony in Canterlot. She starts her own fashion line that combines traditional Equestrian styles with new, edgy looks and has to deal with the cut - throat fashion industry in the city.
A possible plot could involve a dark force threatening both the world of Lucario and Equestria. A group of ponies and Lucario have to come together. The ponies use their magic and the Lucario use their combat skills and aura powers to fight off the common enemy. This would show how different abilities can be combined in a crossover story.