I'm wandering, why is Entei S? I haven't used him at all - god knows I've tried - and practically every Entei I've come across were pretty damn bad! His stats aren't anything overly special - he's taken down easily by any water type - bulky or not (I have a slowking and crawdaunt on my team, and the 85 defense is pretty rubbish compared to Crawdaunt's 120 Atk, never mind SE, adaptability, STAB damage, life orb) and with the fairly bad defense it's: 132.6% - 156.3%
Not to mention my lilligant has hidden power rock, that always KOs. And no, I don't use stealth rock, he just has bad defense generally! I admit, the high attack and high speed make it seem like a choice band set might look tasty, but seriously, what does he have? Iron head is rubbish in terms of coverage, flare blitz and stone edge look nice together, but that's hardly S tier material. I was expecting him in B, but I suppose A will do.