I need Garchomp!
(If there is no location whatsoever for Gible, can you please put the locations for other regions so I can trade.)
Youngster Joey approves of this question
It cannot be found in White 2. You must PokeTransfer, or trade one from Black 2, where Alder gives it to you after defeating Benga.
For Black 2, you can get it from Alder after you beat Benga.