[PK Gaming]

Cryogonal: Never use this thing / rarely see it, so it's tiering position is almost entirely based on theorymon. If you're confident that it's C-tier, I don't see any harm in moving it up, though I'd like to see more opinions on cryo before that happens. (might be hard, not many people use Cryogonal...)

Gligar: Gligar gets a bum rap for being useless, but its ability to nearly guarantee that Heracross (Heracross) is useless for the entirety of the match is awesome. It actually turns Heracross, Scarf Mienshao / HP Ice-less Mienshao into a liability. Eviolite lets you somewhat check those Fire-type physical attackers, despite not having a resistance to their STAB. Overall its hard to kill when played correctly. panamaxis does a better job at explaining why gligar is good.

Galvantula: It's passed up all the time for being inferior to other Electric-types(I don't even think most UU players know about its existence), but that doesn't necessarily mean its bad. Galvantula is just a beast; what even walls it outside of Snorlax? It's coverage lets it beat both varieties of ground types (Energy Ball for ground / rock & HP Ice ground / flying ...) and its "viable" Thunder is insanely strong. It's fast too... 108 gets a jump on conceivably everything in UU barring Raikou, Crobat, Weavile and a few other faster threats. There are some pretty decent counterarguments: its disappointing base Special Attack (97 Base SpA), terrible defensive stats, and SR weak, but nobody has made a case against Galvantula yet. I mean the only Galvantula's i've seen on ladder were shitty scarf variants :/

Ambipom: The hate against Ambipom is way, way, way too overblown. It's really not that bad! Re-quoting because i'm lazy.

Ambipom post explanation post #1

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Cesterp explained this already well, but I will post my thoughts anyway. Ambipom isn't a bad pokemon, it's just that people (and according to what I bolded, you do too) use it wrong. Using U-turn on Ambipom is, simply put, a bad idea, and a lot of people have already talked about this on differents thread on this forum, but there's simply no point on using U-turn Ambipom in Gen V, as, thanks to Team Preview, you're scouting nothing, because you already now from start what the opponent answer to Ambipom is. You also said that most teams have an Ambipom counter, and what's the problem here? Everybody also runs a Heracross counter, a Zapdos counter or a Darmanitan counter, and that doesn't make them bad pokemon, especially considering Ambipom can heavily damage (and sometimes even defeat) those counters with proper prediction. A Fake Out / Return / Low Kick / Shadow Claw (or Beat Up) moveset is what you should be using on Ambipom, as with that set, Ambipom can both abuse Fake Out and hit his counters (like Cobalion, Rhyperior, Cofagrigus etc) for high damage.

Ambipom explanation post #2

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Ambipom isn't THAT bad. Being able to switch in, slap something with a STAB Life Orb Technician +3 Priority Move, not take any damage, and switch out to live another day is a somewhat nice thing. If your team lacks phazing, Ambipom can do a half decent job at killing set-up sweepers. It can also kill a lot of common and frail scarfers (kills Flygon after some chip damage, just for a common example- Mienshao and Weavile both don't exactly like tanking Outrage/Earthquake/U-Turn). It's not like it's so bad that it just deserves to die in a well. It's good, there's just better alternatives. A lot of the hate directed to it is simply because far superior choices exist (unless for whatever reason your team NEEDS the most powerful Fake Out). C rank is something like- "This pokemon can be effective given the right support. It either has crippling flaws or is severely outclassed." D is that the Pokemon isn't effective. E is that it literally can do nothing. I don't see Ambipom doing nothing in any battle ever. It's always Fake Out'ing some threat that might cause problems, and can really rack up some damage when facing hyper offense. Sending it to the E rank would just be out of spite, not because it's legitimately the most terrible thing ever.

Dusclops: I'm sorry hilarious, but I really can't see how Dusclops is any better than E-tier. It's arguably the biggest crutch in UU; there's just no way you can make a conscious effort to use this thing without artificially making your team worse. If you're going to use a defensive ghost-type, why use Dusclops thing over Cofagrigus? It has Eviolite, but it's gains in bulk aren't worth the lack of leftovers. I can't think of many Pokemon it's better at checking than Cofagrigus. They're both good at shutting down Fighting-types, (Dusclops is "better" but Cofagrigus isn't far behind), and that extra physical bulk doesn't help it against some of the premier physical attackers in the tier, like Victini, Darmanitan, Chandelure, etc. It's stuck using Night Shade as an attacking move, which is kind of bad (at least Shadow Ball hits Psychic & Ghost-types for SE damage). Unlike Cofagrigus, it's only form of recovery is Pain Split (I won't even comment on Restalk, because that's an obviously bad set.) I'm willing to hear you out, because I have feeling you've successfully used it in the past, but so far i'm not buying Dusclops being any good.

Zoroark: If anyone is seriously willing to argue it's tiering position, I can do that. I'll reply to you in a bit Salem1.

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update
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Registeel up from D-tier ==> C-tier