I am sorry for my hostility, but as I said previously, if there had been any abilities involved that would have stopped the problem, I wouldn't be having this issue. I made it rather clear with examples I have dealt with. I am aware of what Mold Breaker does, but Sandshrew, Pidgey, and Purrloin do not have Mold Breaker.
I'm happy you have brought it to my attention, but this isn't a case of 'That's not fair Pokemon, why u so cheating!'. This is a case of; I have run into something that has no logical explination to it, and it seems to happen in every game I play.
So when I use Hypnotize on a wild Purrloin, and the game legitimately states 'It doesn't effect it', this isn't Mold Breaker, or Chesto Berry, or "Hold item say what?" this is a case of some kind of glitch that i always find.