Pokemon Bank

I'm pretty sure IVs and EVs are the only things PokeBank checks...

You can have whatever moves you want and whatever abilities you want on whatever Pokemon you want. That means that a hacker's Pokemon can be pretty much anything they want, legal or not. I'm pretty sure that's a huge imbalance in the competitive play.

I personally have never came across something like a wonderguard charizard or something along those lines, but we'll see