Well, a fanfic about Ash, Misty and Charizard in Kalos could be really exciting. Maybe it could start with Ash arriving in Kalos with Charizard, and then Misty comes to visit. They could explore the unique Pokémon in Kalos together, and Charizard might have some interesting battles against the local strong Pokémon. It would be a great story to show their friendship and adventures in a new region.
The plot could be that Ash is in Kalos to participate in a special Pokémon tournament. Misty hears about it and decides to come support him. Charizard, of course, is Ash's main battling Pokémon. Along the way, they meet a new type of Pokémon that is causing trouble in the region. They have to figure out a way to stop it, with Charizard using its powerful attacks. And in the end, Ash wins the tournament with the help of Misty and Charizard.
One possible fanfiction could be about Ash taking his Charizard to the Kalos region for a special tournament. Ash might face some tough opponents in Kalos while relying on his trusty Charizard. Their bond could be further explored as they adapt to the new environment and Pokémon in Kalos.
In Kalos, one potential rival for Ash could be a local trainer who specializes in Fairy - type Pokémon. Fairy - type Pokémon can be quite tricky in battles, and this trainer has mastered the use of their unique abilities. For Misty, a rival could be a girl who is an expert in water - type Pokémon battles, just like Misty herself. This girl might have some rare water - type Pokémon from Kalos that Misty has never seen before.
The plot could be that Ash enters a Kalos - only Pokémon competition with Charizard. They face strong opponents with unique Kalos Pokémon. Charizard might learn new moves by observing the local Pokémon. For example, it could see a Delphox use a powerful fire - type move and try to adapt it to its own style.
One common theme is adventure. Since Kalos is a new region for them, there are always new places to explore, Pokémon to discover, and challenges to overcome. For example, they might go on a journey to find a rare Pokémon in the Kalos wilderness.
Friendship is a common theme. Ash, Brock, and Charizard have a strong bond, and in Kalos, this bond is often tested and strengthened. Another theme could be discovery, as they explore the new Kalos region.
In some 'ash takes charizard to kalos fanfiction', the plot could revolve around Charizard getting sick or injured in Kalos due to the new environment. Ash then has to search for a cure or a way to heal Charizard. This could lead him to meet some kind of Pokemon healer in Kalos who teaches him new techniques to take care of Charizard. And during this time, Ash also has to deal with any threats that come their way while Charizard is recovering.
Well, a great plot might be that Ash and Misty are in Kalos on a research mission about Pokémon evolution. Misty is especially interested in how certain water - type Pokémon in Kalos evolve differently compared to other regions. They get separated during their exploration in a mysterious forest in Kalos. Ash has to find his way through the forest with his Pokémon while also looking for Misty. Meanwhile, Misty discovers an ancient water - type Pokémon that is thought to be extinct. In the end, they reunite and share their discoveries.
Well, it might mean that Ash is bringing his powerful and experienced Charizard into the Kalos region for some epic battles. Maybe he wants to show off Charizard's strength against the unique Pokemon in Kalos.