Oh Yeah I remembered!
If you are from the UK then when you purchase a copy of BW2 you get a Lightning Rod Pikachu. Or you can get it in Germany if you buy BW2 from Toys-R-Us.
Hold Item: No Item
Date of Receiving: Available from: November 9th 2012 - May 30th 2013
Entree Forest. Met at Lv. 10
So in theory get your starter but don't use it and use the Pikachu instead.