Don't mean to eavesdrop (well yes, frankly, I do), but just to be clear, in NA when evolving a Hayner B, Pence B, or Olette B (with Extra Attack) as the base medal into HPO, the trait will carry over?
I got Extra Attack on a Hayner B last night, so if I evolve him into HPO, it'll still have Extra Attack? On top of that, if I can get Hayner B to 100% guilt, evolve it into a HPO with 100% guilt and then just re-roll guilt on it (which will be 100% since it cannot go lower), I'll unlock Nova bonuses for both?
Is it even worth it to continue trying to get individual Extra Attacks on Pence B or Olette B individually? I mean, HPO for 1 extra gauge cost does +1 gen Def and +1 PSM Def so I'm about to throw in the towel on the other 2 and just get 100% guilt on them. I've had bad luck with Pence B (Def +2000 for days).
Also, as others have reiterated, I don't know the drop rates, but bonus times make farming pretty easy (though I still don't know who drops it). I've only played during bonus times and tonight I got 28 Pence Bs in 1 hour. 16 Hayner Bs last night in ~35 minutes.