Darn, just looked and mine is a Relaxed nature. Even so, TBH, there's little point in training a competitive one; you can't use it on Battle Subway or Wifi battles NEway unless I'm mistaken? And aren't those the main areas to use competitively-raised Pokémon?
I can try running the Event a few more times and see if I luck out with a nature, but ATM, I have W2 in the older-model DS and Black in the 3DS, so not doing it right now.
I can try running the Event a few more times and see if I luck out with a nature, but ATM, I have W2 in the older-model DS and Black in the 3DS, so not doing it right now.