Ash Ketchum is regarded as the hero of the original Pokémon anime, yet even he would struggle against the many powerful Trainers of the manga.

Ash used his new status as Champion of Alola to enter the World Coronation Series, in which the Pokémon world’s best trainers fight for a place in the Master’s tournament. Of course ...

and Pokémon share, so why not make them fight each other ... Gary would work great as a substitute for Blue as well. Yugi and Ash absolutely need to battle. There would be so much yelling ...