Some random ideas:
Pokémon Light and Pokémon Sound
Pokémon Light and Pokémon Shadow
Pokémon Circle and Pokémon Square
Pokémon Micro and Pokémon Macro
Pokémon Sword and Pokémon Shield
Pokémon Wet and Pokémon Dry
Pokémon Zero and Pokémon One
Pokémon On and Pokémon Off
Pokémon Glad and...