Rivals that appear throughout the franchise, like Cynthia and Gary Oak, have trained their favorite Pokémon to perfection, providing tough challenges for Ash. Ash's Pikachu, despite its refusal ...

These are the best rivals that Pokemon trainers will ever face. An awesome episode in this series is Fighting Fear with Fear! where Ash meets up with his former rival, Gary, and they battle ...

As to who would win, that's anyone's guess. Gary would work great as a substitute for Blue as well. Yugi and Ash absolutely need to battle. There would be so much yelling and screaming about hope ...