I'm trying to reset for a certain natured Celesteela, and I plan to EV train it after I get the nature I want. However, since it is a UB, I know it is stronger than some of my team and will knock out a few of them. If, for example, I send out an eevee and it knocks it out, would the Celesteela gain a Special Defense EV? Or would the EVs be zero like every other wild Pokemon you catch?