Who could be Ash's main rivals in the 'Ash competes in the Champion League' fanfiction?

Well, Ash could face some really tough opponents. Maybe he'll have to use some new strategies that he's been secretly working on. And his Pokémon might evolve during the competition to give him an edge.

There are quite a few potential rivals. For example, Paul could be one. He has his own unique battling style and might be intrigued by Ash's Alola - champion ways. Then there's Trip. He could see Ash as a target to boost his own reputation. And in Alola itself, some of the more ambitious students from the Pokémon school who are aiming to be the best might also become rivals, constantly challenging Ash to prove they are worthy.

Perhaps he defeats some of the Elite Four members who are participating in the league. They are known for their strength, so it would be a huge accomplishment. And of course, any recurring rivals from his past adventures like Trip or Paul.

The unknown champion could be a reclusive hermit - like character who has been living in seclusion in a forest. They have trained their Pokémon in harmony with nature and have a very different approach compared to the more mainstream trainers. Maybe they are an old - timer who has seen different eras of Pokémon training.

There could be some new rivals as well. Maybe there's a young, up - and - coming trainer who has heard a lot about Ash and wants to make a name for himself by defeating the new Frontier Brain Ash. Also, an old acquaintance from one of his previous travels who has also developed into a strong trainer could emerge as a rival. They might have different views on Pokémon training, which would lead to intense battles.

It could be a local Kalos trainer who has been training specifically to become the Kalos champion for years. This trainer might have a team of rare and powerful Kalos Pokémon and a very strategic battle style. He or she could see Ash as an outsider and a threat to their long - held dream of being the champion.

Maybe Team Rocket. They've been after Ash for a long time. If Ash comes back as a champion, they might see it as a threat and betray him in some way. They could pretend to be his friends at first and then stab him in the back to get what they want, like his powerful Pokémon or his championship title.

A fellow trainer in Alola could betray Ash. This trainer might be envious of Ash's success as a champion. He could secretly work with Team Skull or some other antagonists to undermine Ash. For instance, he might give false information to Ash about a battle location, leading Ash into a trap.

Well, in an 'ash unknown champion' fanfiction, the plot might involve Ash getting lost in a mysterious region. There, he stumbles upon an unknown champion who is facing some sort of problem, like a group of poachers targeting their rare Pokémon. Ash decides to help the champion, and in the process, they exchange their Pokémon training techniques. As they work together, Ash realizes that there are so many new ways to approach Pokémon battles that he hadn't known before.

Some of the gym leaders could also be involved. Maybe they feel threatened by Ash's new - found power as a champion. They might think that Ash will change the way the Pokemon battling world works and in order to stop that, they betray him. They could spread lies about Ash misusing his Pokemon or something similar.