There could be a new, unknown group of villains in the fanfiction. They might be after a special type of Pokemon that is native to Unova. These villains could be using underhanded tactics to catch these Pokemon, and Ash and May would have to uncover their motives and stop them. For instance, they could be trying to use the power of these Pokemon for their own selfish gains, like taking over Unova's Pokemon centers or disrupting the Pokemon league.
Another potential villain could be a lone, powerful trainer who has a grudge against Ash. This trainer might see Ash as a threat to his own plans in Unova. He could try to sabotage Ash's journey and also target May since she is Ash's friend. This trainer could have a team of very strong and unique Pokemon that Ash and May have never faced before, making the battles against him extremely challenging.
In such a fanfiction, Ash and May could encounter new and rare Pokemon in Unova. They might face tough battles against powerful trainers and gym leaders. For example, Ash could use his Pikachu in unique strategies against Unova's electric - type Pokemon that have different abilities compared to those in other regions.
Some potential rivals could be the local Unova trainers who are known for their unique battling styles. For example, a trainer who specializes in using Bug - type Pokemon could be a tough rival for them.
It could be a Team Plasma - like organization that is causing trouble in Unova. They might be trying to steal Pokémon or disrupt the balance in the region, and Ash and May have to stop them.
The theme of discovery is quite common. Ash discovers new Pokemon species, new battle strategies, and new aspects of the Unova region. There's also the theme of competition, as he battles against various trainers in Unova. His interactions with these trainers and how he learns from each battle is a key part of many fanfictions.
Ash is the central character, but there could be new characters introduced. Maybe some young trainers who look up to Ash and follow him around in Unova. The Elite Four members of Unova could also be more prominent. And don't forget about Team Plasma. Their presence could add a lot of drama to the story as Ash tries to take on their threats while also taking his Unova journey seriously.
One potential rival could be a male trainer who has a more traditional view of Pokémon training and looks down on the fem Ash's different approach. He might constantly try to one - up her in battles.
One great fanfiction could be 'Ash's Unova Redemption'. It focuses on Ash making up for his past losses in Unova and really developing his skills further. It has some unique battles and character interactions that make it stand out.
One interesting plot point could be Ash and May encountering a rare and powerful Unova Pokémon that they have to work together to catch. This could test their teamwork skills and knowledge of Pokémon.
In this fanfiction, Ash and Dawn's adventures in Unova could be filled with new Pokemon encounters. Ash might bring his typical enthusiasm and determination, while Dawn could add her own unique charm and Contest skills. They could team up to face new challenges, like strong Gym Leaders in Unova. Their friendship would also likely develop further as they explore this new region together.
In a fanfiction of Ash in the Unova League, it could focus on his relationships with his Pokemon during this journey. Maybe Pikachu has a special moment of growth, or he catches a new and rare Pokemon that becomes crucial in his battles in the league.