It's hard to say who would be more powerful. Red has a lot of experience from his adventures in Kanto. But Ash has also faced many tough battles in different regions, including Alola. It might depend on the situation and the type of Pokémon they are using.
Maybe they'll go on an adventure together in Alola. Red could be amazed by the unique Pokémon species in Alola, and Ash could learn from Red's experiences with Pokémon from other regions. They might also team up to face some tough opponents and show off their combined skills in Pokémon battles.
Red has a reputation for being an extremely skilled trainer. However, Ash has a unique bond with his Pokémon. If it was a battle, Ash's Pikachu might be able to pull off some unexpected moves against Red's Pokémon. But Red's Charizard is also very powerful. So, in the end, it might be a draw if both trainers are evenly matched in terms of skill and strategy.
He could bring some Johto Pokémon like Houndoom. Houndoom is a Dark - type Pokémon that would add a new element to Alola's Pokémon diversity. Its intimidating presence and strong battle capabilities would surely make it a popular addition among trainers in Alola.
A common theme in such fanfictions could be Ash's adventures in Alola while building relationships with different characters. Maybe he forms special bonds with his Pokémon and the people around him in a more romantic or friendship - deepening way.
One great 'Pokemon Ash Alola' fanfiction is 'Ash's Alolan Adventure'. It has Ash making unique friendships in Alola and facing new Pokemon challenges. The story really captures the essence of the Alola region with its beautiful descriptions.
One popular aspect of Alola fanfiction with Ash could be his growth as a trainer. In the Alola region, Ash had unique experiences. Fanfiction might explore how he further developed his skills, formed new bonds with Pokemon, and interacted with the local culture. For example, his relationship with Pikachu might be delved into deeper, showing how they overcame new challenges together in the Alola setting.
The main characters would surely include Ash. In Pokemon Red, the rival character, Gary (or whatever name you choose for the rival in the game), could also play a major role. And of course, the various gym leaders from Pokemon Red. They could have different encounters with Ash, some might be friendly and help him, while others could be more challenging opponents. Also, Professor Oak might be involved, as he is connected to both Ash's world and the world of Pokemon Red in some ways.
Well, it could potentially have the main character from Pokemon Red, like Red himself. He would be the one exploring the Alola region in this fanfiction.
One popular character could be the local Alola Pokemon Professor. He is often seen as a source of knowledge, guiding trainers in their journey in 'pokemon red alola fanfiction'.
Professor Kukui is another common character. He serves as a guide and mentor to Ash in the Alola region. He might provide Ash with new Pokémon knowledge, especially about the unique Alola Pokémon species. And of course, there are the various Pokémon trainers that Ash meets and battles in the Alola region. These trainers can range from novice trainers just starting out to more experienced ones who pose a real challenge to Ash.