Brock and Lucy could embark on a journey to find a legendary Pokemon. Brock's experience and knowledge of different Pokemon types would be useful, while Lucy's determination and unique battling style would complement him well.
One possible aspect of a Brock and Lucy fanfiction could be their adventures together. Maybe they team up to explore a new region in the Pokemon world, facing various challenges and making new Pokemon friends along the way.
There might not be as many as some more mainstream pairings, but often these types of fanfictions can be found in Pokemon -centric fanfiction collections. Sometimes, looking through the Pokemon fanfiction tags related to Brock and Lucy specifically can lead you to some hidden gems. You could also check out Pokemon fanfiction forums where fans might share their own or recommend 'pokemon brock x lucy fanfiction'.
One great fanfiction is 'Brock and Misty's Adventure'. It beautifully portrays their relationship growth. It has them going on a journey together, facing challenges side by side. Another one is 'Brock and Misty: Unlikely Allies'. In this, they start off not getting along but gradually become closer through various events. And there's also 'The Brock - Misty Bond' which focuses on how their bond deepens over time as they travel through the Pokemon world.
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.
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.
One popular theme is friendship development. Many fanfictions focus on how Brock and Misty start as acquaintances or even rivals and slowly become good friends. Another theme is adventure. They often go on Pokemon - related adventures together, facing different challenges. And of course, the theme of unspoken feelings is also common. There are often hints of something more than friendship between them.
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.
You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own. These platforms have a wide range of fan - made stories, including Pokemon Ash x Brock fanfictions. Just use the search bar and type in 'Pokemon Ash x Brock' and you'll get a list of relevant stories.