Just compiling useful info we have now from some of our posters. I think right now we can conclude that online battles have another layer of check that are more stringent than pokebank, so even if it passes pokebank, it might not be usable.
Stuff with photographic proof:
1. Shiny or not apparently isnt a factor in the hack check.
By lambchips, Tepig has the unreleased HA of thick fat, but apparently cannot be used to fight. Says he will breed one with the kalos mark and see if it can be used, so check back on that thread for updates.
Updated by lambchips: It doesnt pass even when bred.
3. Legit hacks can pass through as expected. Heck if that Torterra can go through thats proof enough, they can probably go online too.
Hacked 6IV ditto and 0IV Magikarp both made it into online free battle ^the Magikarp is in a Cherish ball
it looks like they check abilities but not IV's and pokeballs
Updated since i see no reason to doubt him at this point.
I see lots of useful information hidden and lost in all the other threads, so i made theis thread to keep track better, im going to bed now. Thanks to all the users who gave images and helped to test. If anyone can give more info(with proof) to this thread, its much appreciated. --- FC: 3067-5611-1084, SV: 897