One of the Pokémon you won’t find in the Alola region that you explore in Pokémon Sun and Moon is Mewtwo. However, if you use the Pokémon Bank to transfer one to your game, you can evolve the Legendary Pokémon into Mewtwo X or Mewtwo Y.
As well as transferring your Mewtwo to Pokémon Sun and Moon, you will need Mewtwo Mega Stones
To get the Mewtwo Mega Stones follow these steps
- Select Mystery Gift on the main menu.
- Select Receive Gift.
- Select Get with Code/Password, then Yes, and then Yes again to connect to the Internet.
- Enter the code
- Watch as you receive Mega Stones.
- Speak to the deliveryman in any Pokémon Center to pick up your Mega Stones.
- Be sure to save your game!
Pokémon Sun and Moon are available now for the Nintendo 3DS.