One interesting idea could be a Pokemon that has been corrupted by a dark force and starts to hunt other Pokemon and trainers. For example, a Pikachu with red, glowing eyes instead of its normal cute ones, and it uses its electric powers in a more menacing way.
In some pokemon horror fanfiction, the concept of a haunted Pokeball is explored. Imagine a Pokeball that seems normal on the outside, but when a trainer tries to capture a Pokemon with it, it releases a terrifying, shadowy entity that drains the life force of the Pokemon and the trainer. It could be a result of some ancient curse related to the Pokeball's creation.
Another idea is the distortion of the Pokemon world itself. Maybe there's a strange phenomenon that makes the usually friendly and colorful Pokemon regions turn into dark, desolate landscapes. The Pokemon that live there are mutated and extremely aggressive. Trainers who find themselves in these areas have to fight not only for their lives but also to keep their sanity as they face these grotesque versions of the beloved Pokemon.
In 'pokemon horror transformation fanfiction', the idea of a Pokemon's body mutating in grotesque ways can be really interesting. Maybe a Bulbasaur with its bulb growing out of control, sprouting thorny vines that seem to have a life of their own and lash out at anything nearby.
One idea could be a hybrid of Pikachu and Eevee. This hybrid could have the cute appearance of both, with Pikachu's lightning - based powers combined with Eevee's ability to evolve into different forms. It could be a central character in a story where it's trying to find its place in the Pokemon world, being different from the normal Pokemon.
One idea could be the main character being reborn as a Pikachu and having to navigate the world with its electric powers while making friends with other pokemon. Another could be being reborn as a Eevee and having the unique ability to evolve into any form at will, which causes both envy and admiration among other pokemon. Maybe the reborn pokemon has memories of being a human and uses that knowledge to outwit trainers and other threats.
One idea could be to create an OC that has a unique typing combination not commonly seen, like a Ghost/Grass type. This could lead to interesting storylines in the fanfiction, such as how they interact with other Pokemon and trainers. Another idea is to give the OC a special ability that sets them apart. For example, an ability that allows it to communicate with wild Pokemon more effectively, which could be useful in various fanfiction scenarios.
For a Pokemon x Pokemon hybrid fanfiction, you could consider a Bulbasaur and Vulpix hybrid. It would have the plant - based abilities of Bulbasaur like photosynthesis and the fire - based powers of Vulpix. It could use the fire to protect its plants or use the plants to create a unique defense against other fire - types. Also, a hybrid of Jigglypuff and Meowth could be really fun. It might have Jigglypuff's singing ability to put others to sleep and Meowth's thieving skills, which could lead to some really comical and interesting plotlines.
One idea could be a story where a Pokemon with a special musical ability is discovered in a hidden forest. The Pokemon's melody has the power to heal other Pokemon. A young trainer then sets out on a journey to protect this Pokemon from those who would misuse its power.
One idea could be a story where Pokemon are able to use the ink - based abilities from Splatoon. For example, Pikachu could shoot out electric - charged ink to battle opponents. Another idea is a crossover world where trainers have to compete in both Pokemon battles and Splatoon - like ink battles. Maybe a Pokemon like Squirtle could be really good at the ink battles because of its natural water - shooting abilities.
Well, a cool idea in 'pokemon execution fanfiction' could be the introduction of new Pokémon species or forms that are a result of the chaos and upheaval caused by the idea of execution. It could also explore how the Pokémon ecosystem is affected, like certain species becoming endangered or more powerful due to the power struggles that might emerge. And there could be a focus on the psychological impact on the characters, both human and Pokémon alike.
One interesting idea could be exploring the relationships between Pokemon and humans in a more in - depth way, like a human having a telepathic bond with their Pokemon. Another is imagining a world where humans can transform into Pokemon temporarily for certain tasks or battles.
Another interesting fanfiction idea could be a story about a trainer who accidentally enters the Digimon world while on a Pokémon journey. They then have to adapt to the new rules and creatures, and perhaps find a way to bring some of the Digimon concepts back to the Pokémon world. This could involve training Digimon in the Pokémon style or vice versa.