Yes
Yes you need Celebi but you can trade on GTS
Yes
Zorua can be found in Castelia City by event with fateful encounter Celebi.
You need to transfer over the Pokemon Celebi that was in an event into Pokemon Black and go to Castelia City. Go to the building in northeast and someone in there will turn into a Zorua, because Celebi will reveal him. You don't need to fight Zorua, it'll automatically go into your party if you have space.
You need to have Celebi on your first slot of your pokemon team.
Celebi.
You have to get a Gamstop Celebi to activate the Zorua event.
Yes you need Celebi but you can trade on GTS
First you need Celebi, then you transfer it to Black or White.
You need a 'Fateful Encounter' Celebi.
Zorua
Zorua is available in both black and white. However, you will need to transfer the even celebi to your game to get it.
Yes. And you need a specific celebi. The one from the event. It was from February 27th to march 6th 2012
To get Zorua, there was an event at gamestop where you could get a free Celebi on every DS Pokemon game you have but the way to get him is have Celebi in your party and go to Castelia city. Then you find the house with a person next to a Zorua and if you have Celebi in your perty, he will join you. Zorua will then evolve into Zoroark at level 30.
Use the Poke Relocator to get the most recent Event Celebi onto White (no other Celebi works). Go to the girl in Castelia City who you talked to to register Zorua in your pokedex. Make sure there's a space in your team and you have Celebi in hand, along with at least one pokeball of any kind. If your Celebi and Zorua get on happily, Zorua is yours.
Its an event pokemon in castelia city;~]
If the Shiny Celebi does not work, you cannot get a Zorua. On Pokemon White, this is the only way to get that species.