One idea could be a story where the main character discovers a rare and powerful Pokemon that is thought to be extinct. This Pokemon could have unique abilities that change the way battles are fought in the Pokemon Horizons universe.
Ash might develop a deeper understanding of Pokemon relationships in the fanfiction. He could observe how different trainers in the new setting interact with their Pokemon and apply those lessons to his own relationships. For instance, he might learn about a special bond that a trainer has with a Pokemon that allows them to communicate telepathically. This could inspire Ash to explore different ways of connecting with his own Pokemon, leading to his character growth.
A good starter team for fanfiction should have a Pokemon with high speed, like Eevee. It can evolve into different types depending on your needs. Also, a defensive type like Geodude is essential. It can resist a lot of physical attacks. And don't forget about a special attacker. Squirtle is a great option as it can become Blastoise and has strong water - type special attacks.
An old - fashioned Pokemon breeder who has a deep connection with the traditional ways of raising Pokemon. They could provide the main characters with valuable advice on how to make their Pokemon stronger and healthier. However, they might also be a bit stubborn about sticking to the old ways and this could cause some conflicts with the more modern - thinking characters in the fanfic.
A good team could be Pikachu for its popularity and electric type moves which are useful in many situations. Charizard as it's a powerful fire type. And Bulbasaur which can cover different types with its grass and poison attacks. These three are classic and can handle a lot in the story.
Naruto himself would be a great addition. His determination and ability to never give up would translate well into being a Pokemon trainer. He could bond quickly with his Pokemon. Also, Kakashi would be good. His intelligence and strategic thinking would help in planning battles. And then there's Shikamaru. His lazy - but - brilliant mind could come up with unique battle strategies using the Pokemon's abilities.
He could have adventures exploring new regions in the Pokemon Horizons universe that haven't been shown in the main series. Maybe he discovers a hidden island full of rare and unique Pokemon.
First, consider the type balance. For example, having a mix of water, fire, grass, and electric types can cover a wide range of opponents. Then, think about the roles. A strong attacker like Charizard can be the main damage dealer. A Pokemon with high speed like Jolteon can go first in battles. Also, include a defensive Pokemon like Snorlax. It can soak up hits and protect the weaker members of the team.
One common theme is friendship. They are often depicted as building strong bonds while on their Pokémon journeys. Another theme could be growth, as they all develop their skills as Pokémon trainers.
One option is having a team of Zacian, which is a very strong legendary Pokemon. Along with it, you can have a Galarian Slowbro. It has good special defense and some interesting moves. Another great addition would be Centiskorch. It's a powerful fire - type Pokemon that can deal a lot of damage. And for a bit of utility, include a Mr. Rime. It has a good mix of stats and can use ice - type moves effectively.