The Relocator, also known as the Transfer Machine, can be unlocked by telling specific words to a scientist in Castelia City, according to PokemonAus. The words are “Everyone” “Happy” and “Simple” “Connection“.
By unlocking the Relocator, you’ll be able to transfer your event PokĂ©mon to Black & White, and obtain Zorua and Zoroark later on.
The Relocator can be unlocked in Castelia City, the tiny part of the city located past Central Plaza in the middle. There are two doors available, one to the left and another on the right, the left building is where you will unlock the Relocator. Head to the above floor and tell the scientist â€śEveryoneâ€ť â€śHappyâ€ť and then â€śSimpleâ€ť â€śConnectionâ€ť, this password will add the Relocator to your main menu next to the Mystery Gift option.
Now you have the Relocator, you can transfer your Shiny Raikou, Entei and Suicune along with your Celebi to PokĂ©mon Black and White Version, only these PokĂ©mon can be sent over this way, everyone else will need to go through the PokĂ©Shifter available after you have defeated the Elite Four. Zoroark can be obtained in Lostlorn Forest when your team contains a Shiny Raikou, Entei or Suicune whilst Zorua can be found in a building in Castelia City when you have Celebi in your party.