The first Mythical Pokémon distributed by Nintendo to celebrate the 20th Anniversary of the franchise was Mew! Mew is one of the original 151 Pokémon and is probably one of the most well recognized Pokémon. It is rumored that Mew has the DNA of every single Pokémon in existing, thus allowing it to be able to learn any move. In times of distress, Mew can create a pink/yellow/green ball of energy around itself to protect against an attack.
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As you can imagine, we were super excited about getting our hands on Mew in our Pokémon 3DS games! Here is our video of us receiving Mew in Alpha Sapphire! Enjoy!