you cant unless you trade with another game You can't. You have to trade over wi-fi or poke transfer it from another region. Thinked this helped
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You can find Pikachu in the dreamworld, but not in the regular game.
You will need to trade for it from Pokemon Black or White to get Pikachu. It cannot be found in the wild.
You Can't Get Pikachu in Black or White but you can trade from another ds or wii and get pikachu. You can see a pikachu though, if you go to Castelia City and go to the road that leads to Route 4, if you go into the building to the left, there is a PIKACHU! XD
no you cant,the only way you can get pickachu is by transfering in from pokemon diamond,pearl or platinum
So far, in Japan, he has Pikachu, Oshawott, Tepig, Tranquill, Snivy, Scraggy, and Swadloon. In the USA he has Pikachu, Oshawott, Tepig, Snivy, and Pidove.