Friendship is a very common theme. Brock and Ash have a strong bond in the Pokemon series, and fanfictions often explore and expand on that. Another common theme is growth, both as trainers and as individuals.
Adventure is also a major theme. Since they are constantly on the move in the Pokemon world, fanfictions will often take them on new and exciting adventures, sometimes to places not seen in the original series. Also, the theme of mentorship pops up often, with Brock sometimes being the mentor to Ash, guiding him in Pokemon battles and knowledge.
Adventure is also quite common. They could go on a journey together that's different from the ones in the original story. Maybe they discover a new region full of unique Pokemon and have to work together to overcome obstacles there. Sometimes, these adventures also involve them helping each other grow as trainers. Another theme is loyalty. Fanfictions might show how Brock is always there for Ash, and vice versa, no matter what difficulties they encounter, like when Ash is in a tough battle and Brock provides crucial support.
Well, in many ash and brock fanfictions, the theme of loyalty is prominent. They are loyal to each other through all their adventures. Also, the theme of discovery, both in terms of new Pokémon and new places. Fanfictions might also touch on the theme of facing fears, as they encounter various dangerous situations together and have to rely on each other to overcome them.
For Ash, Pikachu is always a great choice as it's his most loyal and powerful partner. Alongside that, a strong flying type like Charizard could be useful. For Brock, his Onix would be a staple. And perhaps a water - type like Vaporeon could be good for him to balance his team. Since they are teaming up, having a psychic - type like Alakazam could also be beneficial as it can help in battles and also with communication in tricky situations.
In this fanfiction, it could be a mysterious figure who has been secretly observing Ash and Brock all along. This figure might be from an ancient Pokemon - worshipping cult. They betray Ash and Brock because they see their presence as a threat to their long - held beliefs and practices regarding Pokemon. They might use underhanded tactics like stealing their Pokemon or spreading lies to turn the Pokemon community against them.
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.
Adventure is a common theme. Since they are both from the Pokemon world, they often go on Pokemon -related adventures together in these fanfictions.
The discovery of new Pokemon species is also a common theme. Writers like to create new and unique Pokemon for Ash to encounter. This adds an element of surprise and adventure to the fanfiction, as Ash has to figure out how to interact with and potentially catch these new Pokemon.
One common theme is Ash's growth. Writers like to show how he matures from a novice trainer to a more experienced and wiser one. Another theme is friendship. His relationships with his Pokemon and human friends are often explored, like how they support each other in tough times.
One possible plot could be that within the fanfiction world, there is a new character introduced who seems to be a great ally at first. This character gains the trust of Ash and Brock over time. However, this new character has a hidden agenda. They might be from a rival region and their goal is to undermine Ash and Brock's reputation in the Pokemon world. So they start spreading false rumors about them and turn other trainers against them, thus betraying their new - found friendship.
Well, a plot could be that Ash and Brock discover an ancient Pokemon artifact that has the power to temporarily boost a Pokemon's strength exponentially. However, a villainous team also wants it. So they have to protect it while also trying to understand its true nature. Or, they could be on a journey to a far - off island where a rare type of Pokemon lives, but on the way, they face all sorts of challenges like bad weather and other trainers who are also after the same Pokemon. Also, a story where they meet a young trainer who is very much like Ash was when he started, and they take it upon themselves to mentor the kid.