Maybe it's a Pokemon itself, like Eevee. Eevee is very friendly and curious. It could be the one to start the whole dancecapades at the party by accidentally finding a magical dance item. Then all the other Pokemon follow Eevee's lead and start dancing, and the story is about Eevee's adventure during this wild party.
In this fanfiction, it might be that there's a mysterious Pokemon that shows up at a Pokemon party. This Pokemon has the power to make all the other Pokemon dance uncontrollably through some sort of magical dancecapades spell. The trainer then has to figure out how to stop the spell while also enjoying the crazy dancing spectacle that all the Pokemon are creating.
The main character could be a talented pokemon stylist. They have a passion for making pokemon look their best with unique haircuts. They travel around different regions to learn new haircut techniques and to show off their skills on various pokemon.
It could be Ash. He's the classic Pokemon protagonist and has been through so many trials already. His will has been tested countless times, like when he faced the Elite Four or when he had to rescue his Pokemon from Team Rocket. In this fanfiction, he could face a new kind of test that really pushes his will to the limit.
A Pikachu could be a great main character. Pikachu is popular and has a lot of potential for character growth. It could start as a timid Pokemon but become a strong leader during the uprising.
It could be a scientist who is involved in the study of Pokemon genetics. While trying to understand the mechanics of evolution better, they accidentally stumble upon the new evolution and then become involved in the events that unfold as a result, both in the scientific and the trainer communities.
It could also be an experienced pokemon trainer who has seen a lot in their travels. After encountering a mirage pokemon by accident and realizing how different and powerful they are, they become determined to become the mastermind in the world of mirage pokemon. They use their existing pokemon training skills and knowledge to study these special pokemon, making them a formidable force in the fanfiction.
Squirtle. Squirtle is cute and friendly. If it adopted a human child, it could show the child the underwater world of Pokemon. The Squirtle could teach the child how to swim, and they could explore underwater caves together. It would be a really fun and light - hearted story with Squirtle as the main Pokemon.
A young girl from a small village in Galar who dreams of becoming a great Pokemon trainer. She could be inspired by the local Gym leader and sets out on her journey with her first Pokemon, a Scorbunny.
It could be a young and inexperienced trainer who is just starting their journey in this new world. They have big dreams but a lot to learn.
It could be a young, inexperienced trainer. They were just starting their journey when the apocalypse hit. This character would be learning about the new, post - apocalyptic world of Pokemon while also growing as a person. Their inexperience could lead to some interesting situations as they make mistakes and learn from them.