I caught mine with a modest nature, 31 sp. atk EVs, 29 HP EVs, 18-26 def/speed EVs and low sp. def/atk.
For EVs, I just put 252 in sp. atk, 100 in speed, and the rest in HP.
Of course, I don't really care about that stuff, I'm not hardcore enough to properly nature, breed, IV, and EV every...