Resource OU Checks Compendium (Read Post #72)

[Agent Gibbs]

SketchUp: Yeah, I'll re-add Mega Scizor in that case, as well as the other stuff. That also reminds me, I had originally decided not to consider Stealth Rock in these calculations since the old categories were a bit looser, but I intended to include it for GSI calculations since it's a fairly strict category. The only problem is I think I disregarded Stealth Rock for a lot of the GSI calculations out of habit lol, so I'll try to go through sometime soon and make sure that Stealth Rock doesn't interfere with the GSI status of some checks (and of course, if anyone notices anything that falls into that category, let me know).

 

[Totodile56]

Good point! Chesnaught has been removed. And yeah, please let me know if you see something else out of place!



I tried to base it on the standards sets in the Pokemon's analysis, so I didn't really consider things that nobody uses (i.e. Other Options stuff). Kinda lazy, I know, but it made it easier to get this done in a timely fashion.



Done!

i think you can put feraligatr and slowking, they can run in ou

 

[Analytic]

Hello, I have a couple of questions.

Why is M-Altaria listed as GSI against Conkeldurr while Azumarill and Clefable aren't? The only reason I can think of is Poison Jab but that's gonna hit M-Altaria anyway

Skarmory under GSI against M-Gardevoir, I find that really shaky.

Calcs:

Hide

232 SpA Mega Gardevoir Focus Blast vs. 252 HP / 252+ SpD Skarmory: 140-165 (41.9 - 49.4%) -- guaranteed 3HKO after Leftovers recovery

232 SpA Mega Gardevoir Focus Blast vs. 252 HP / 252+ SpD Skarmory: 140-165 (41.9 - 49.4%) -- 24.6% chance to 2HKO after Stealth Rock and Leftovers recovery

232+ SpA Mega Gardevoir Focus Blast vs. 252 HP / 252+ SpD Skarmory: 153-181 (45.8 - 54.1%) -- 5.9% chance to 2HKO after Leftovers recovery

232+ SpA Mega Gardevoir Focus Blast vs. 252 HP / 252+ SpD Skarmory: 153-181 (45.8 - 54.1%) -- 96.1% chance to 2HKO after Stealth Rock and Leftovers recovery

I find this more situational than guaranteed tbh. It's not guaranteed to switch in safely so I would put in SSI

Nice thread :)

 

[Random Passerby]

1) Clefable actually loses to Offensive Mega Altaria even if it runs 252 HP / 252 Def Bold. This obviously applies to the standard 252 HP / 172 Def / 84 SpD Calm as well. (Tbf the standard spread beats the SpA set w/o Stealth Rock but it is still a shaky check since Rocks + Hyper Voice 2HKOes)

252+ Atk Pixilate Mega Altaria Return vs. 248 HP / 252+ Def Clefable: 186-220 (47.3 - 55.9%) -- 24.6% chance to 2HKO after Leftovers recovery
168+ SpA Pixilate Mega Altaria Hyper Voice vs. 248 HP / 8 SpD Clefable: 189-223 (48 - 56.7%) -- 37.9% chance to 2HKO after Leftovers recovery

2) Mega Altaria is listed as a Bisharp check when it is outsped and OHKOed. (Even bulkier sets of Mega Alt loses to this)

252 Atk Life Orb Bisharp Iron Head vs. 0 HP / 4 Def Mega Altaria: 307-361 (105.4 - 124%) -- guaranteed OHKO
252 Atk Life Orb Bisharp Iron Head vs. 248 HP / 136+ Def Mega Altaria: 244-291 (69.1 - 82.4%) -- guaranteed 2HKO
0 Atk Pixilate Mega Altaria Return vs. 0 HP / 4 Def Bisharp: 154-183 (56.8 - 67.5%) -- guaranteed 2HKO

3) Add Mega Gallade as NSI to Conkeldurr

252 Atk Mega Gallade Zen Headbutt vs. 0 HP / 0 Def Conkeldurr: 326-386 (92.8 - 109.9%) -- 93.8% chance to OHKO after Stealth Rock
252 Atk Mega Gallade Zen Headbutt vs. 40 HP / 0 Def Conkeldurr: 326-386 (90.3 - 106.9%) -- 75% chance to OHKO after Stealth Rock

4) Add Bisharp to NSI to Clefable

252 Atk Life Orb Bisharp Iron Head vs. 248 HP / 252+ Def Clefable: 291-346 (74 - 88%) -- 6.3% chance to OHKO after Stealth Rock
252 Atk Life Orb Bisharp Iron Head vs. 252 HP / 172 Def Clefable: 351-413 (89 - 104.8%) -- 25% chance to OHKO

5) Add Volcarona as NSI to Breloom

252 SpA Volcarona Fire Blast vs. 0 HP / 0 SpD Breloom: 560-660 (214.5 - 252.8%) -- guaranteed OHKO

6) Mega Aerodactyl as NSI to Mega Beedrill

252 Atk Adaptability Mega Beedrill U-turn vs. 0 HP / 4 Def Mega Aerodactyl: 97-115 (32.2 - 38.2%) -- 96.9% chance to 3HKO
252 Atk Adaptability Mega Beedrill Poison Jab vs. 0 HP / 4 Def Mega Aerodactyl: 111-131 (36.8 - 43.5%) -- guaranteed 3HKO
248 Atk Tough Claws Mega Aerodactyl Aerial Ace vs. 0 HP / 80 Def Mega Beedrill: 464-548 (171.2 - 202.2%) -- guaranteed OHKO

7) Clefable is listed as SSI to Feraligatr when it is straight up 2HKOed and cannot OHKO back.

252 Atk Life Orb Sheer Force Feraligatr Waterfall vs. 248 HP / 252+ Def Clefable: 168-199 (42.7 - 50.6%) -- 40.2% chance to 2HKO after Stealth Rock and Leftovers recovery
252 Atk Life Orb Sheer Force Feraligatr Waterfall vs. 252 HP / 172 Def Clefable: 199-235 (50.5 - 59.6%) -- 84.8% chance to 2HKO after Leftovers recovery

 

[Agent Gibbs]

1) Clefable actually loses to Offensive Mega Altaria even if it runs 252 HP / 252 Def Bold. This obviously applies to the standard 252 HP / 172 Def / 84 SpD Calm as well. (Tbf the standard spread beats the SpA set w/o Stealth Rock but it is still a shaky check since Rocks + Hyper Voice 2HKOes)

252+ Atk Pixilate Mega Altaria Return vs. 248 HP / 252+ Def Clefable: 186-220 (47.3 - 55.9%) -- 24.6% chance to 2HKO after Leftovers recovery
168+ SpA Pixilate Mega Altaria Hyper Voice vs. 248 HP / 8 SpD Clefable: 189-223 (48 - 56.7%) -- 37.9% chance to 2HKO after Leftovers recovery

Don't forget that the standard set also runs Magic Guard, so it's immune to Stealth Rock. It's good enough for SSI.

2) Mega Altaria is listed as a Bisharp check when it is outsped and OHKOed. (Even bulkier sets of Mega Alt loses to this)

252 Atk Life Orb Bisharp Iron Head vs. 0 HP / 4 Def Mega Altaria: 307-361 (105.4 - 124%) -- guaranteed OHKO
252 Atk Life Orb Bisharp Iron Head vs. 248 HP / 136+ Def Mega Altaria: 244-291 (69.1 - 82.4%) -- guaranteed 2HKO
0 Atk Pixilate Mega Altaria Return vs. 0 HP / 4 Def Bisharp: 154-183 (56.8 - 67.5%) -- guaranteed 2HKO

Specially offensive variants of Mega Altaria actually outspeed Bisharp (base 80 Spe vs base 70 Spe), and they can tank a Sucker Punch easily and OHKO with Fire Blast (and even Hyper Voice). It can't switch in all that safely because of Iron Head (although I might give this one the Terrakion treatment), but it works for NSI.

6) Mega Aerodactyl as NSI to Mega Beedrill

252 Atk Adaptability Mega Beedrill U-turn vs. 0 HP / 4 Def Mega Aerodactyl: 97-115 (32.2 - 38.2%) -- 96.9% chance to 3HKO
252 Atk Adaptability Mega Beedrill Poison Jab vs. 0 HP / 4 Def Mega Aerodactyl: 111-131 (36.8 - 43.5%) -- guaranteed 3HKO
248 Atk Tough Claws Mega Aerodactyl Aerial Ace vs. 0 HP / 80 Def Mega Beedrill: 464-548 (171.2 - 202.2%) -- guaranteed OHKO

It's actually SSI at the moment, although I think I could add it to GSI since it takes all of Mega Beedrill's attacks pretty easily and OHKOs.

I'm good with everything else you and Analytic suggest, though. Thanks!

Also, updated the OP with the latest version of D_what's art. Thanks again, man!

 

[Random Passerby]

How does Gastrodon become GSI to Kingdra when this happens? (I'm assuming Physically Def Gastrodon)

252+ SpA Life Orb Kingdra Draco Meteor vs. 252 HP / 4 SpD Gastrodon: 286-339 (67.1 - 79.5%) -- 79.7% chance to 2HKO after Leftovers recovery
-2 252+ SpA Life Orb Kingdra Draco Meteor vs. 252 HP / 4 SpD Gastrodon: 142-169 (33.3 - 39.6%) -- possible 5HKO after Leftovers recovery
80 Atk Life Orb Kingdra Outrage vs. 252 HP / 252+ Def Gastrodon: 161-191 (37.7 - 44.8%) -- guaranteed 3HKO after Leftovers recovery

This means
1) DM + Outrage will KO
2) 2 hits from DM will KO.

If you don't run Physical Def investment, Outrage easily 2HKOes.
80 Atk Life Orb Kingdra Outrage vs. 252 HP / 0 Def Gastrodon: 242-285 (56.8 - 66.9%) -- guaranteed 2HKO after Leftovers recovery

 

[AD impish john]

This list is very helpful for team building nice work. Can you add Skarmory on the list as I can't find it anywhere, and its mentioned on most of the checks. IMO, can you add Mega Banette, since it is now C Rank. It can check Fairies with Gunk Shot OHKO them and do status conditions such as Will-O-Wisp to most physical mons crippling them. It can also use Taunt to stop mons from setting up field hazards. With Shadow Sneak it can do major damage to most Ghost and Psychic types. Have a nice day ^_^

 

[TPP]

I found a few changes, mostly with the rise of Tank Chomp. There's also no Ferrothorn and no Staraptor, so you should add them.

Mega Beedrill: Garchomp can be GSI for Mega Beedrill, as U-turn is the strongest move Beedrill can use, and it does ~34-40%, while Beedrill takes 29% every time.

Excadrill: Garchomp can be also SSI or GSI for Excadrill.

Gengar: Tyranitar could be NSI for the same reasons as Bisharp (Focus Blast 1HKO both of them).

Mega Heracross: You have Lando-I as GSI and Lando-T as SSI, but I think its supposed to be the reverse.

Terrakion: Garchomp can be GSI or SSI since Choice Banded Terrakion can 2HKO with Close Combat.

Scolipede: I'm not sure why Gliscor and Lando-T are SSI, but Garchomp could be SSI too since LO Scolipede has the 3HKO if it wants to kill.

Mega Venusaur: Torn-T could be SSI or GSI since Sludge Bomb is a 4HKO.

That's it for now. Keep up the great work ;)

 

[Agent Gibbs]

How does Gastrodon become GSI to Kingdra when this happens? (I'm assuming Physically Def Gastrodon)

252+ SpA Life Orb Kingdra Draco Meteor vs. 252 HP / 4 SpD Gastrodon: 286-339 (67.1 - 79.5%) -- 79.7% chance to 2HKO after Leftovers recovery
-2 252+ SpA Life Orb Kingdra Draco Meteor vs. 252 HP / 4 SpD Gastrodon: 142-169 (33.3 - 39.6%) -- possible 5HKO after Leftovers recovery
80 Atk Life Orb Kingdra Outrage vs. 252 HP / 252+ Def Gastrodon: 161-191 (37.7 - 44.8%) -- guaranteed 3HKO after Leftovers recovery

This means
1) DM + Outrage will KO
2) 2 hits from DM will KO.

If you don't run Physical Def investment, Outrage easily 2HKOes.
80 Atk Life Orb Kingdra Outrage vs. 252 HP / 0 Def Gastrodon: 242-285 (56.8 - 66.9%) -- guaranteed 2HKO after Leftovers recovery

Good point, I'll drop that to SSI.

This list is very helpful for team building nice work. Can you add Skarmory on the list as I can't find it anywhere, and its mentioned on most of the checks. IMO, can you add Mega Banette, since it is now C Rank. It can check Fairies with Gunk Shot OHKO them and do status conditions such as Will-O-Wisp to most physical mons crippling them. It can also use Taunt to stop mons from setting up field hazards. With Shadow Sneak it can do major damage to most Ghost and Psychic types. Have a nice day ^_^

I don't plan on adding Skarmory at the moment, sorry. It's just so insanely passive that it's rarely (if ever) going to be a major concern when teambuilding. Not saying I won't add it and other passive things eventually, but even if I do it'll have to wait until I have a lot more free time, which I honestly don't right now. I could add Mega Banette as a check to some things, though. If there's anywhere in particular that you think he'd fit, just let me know.

I found a few changes, mostly with the rise of Tank Chomp. There's also no Ferrothorn and no Staraptor, so you should add them.

Kinda like Skarmory mentioned above, I don't have any plans to add Ferrothorn at the moment seeing as how it doesn't pose much of a threat itself due to its passive nature. Staraptor too, since it's rarely ever used and is only ranked C+. Might add lower ranks sooner or later, but kinda like with the passive stuff, that'll just depend on whether or not I get more time on my hands.

Gengar: Tyranitar could be NSI for the same reasons as Bisharp (Focus Blast 1HKO both of them).

Well, both can switch into Gengar's STABs and win (Tyranitar with Scarf and Bisharp with Sucker Punch), but Bisharp can also get screwed by Substitute after switching in and then gets into those Sucker Punch 50/50s. Substitute only saw ~16.6% usage last month, though, so I guess it's uncommon enough that I could actually move Bisharp up into SSI.

Mega Heracross: You have Lando-I as GSI and Lando-T as SSI, but I think its supposed to be the reverse.

Actually, Landorus should be removed altogether (I knew I missed a couple lol). The main reason was because Landorus can run Psychic to switch in and OHKO, whereas Landorus-T relies on wearing Mega Heracross down a little more slowly, so it main hinges on whether Mega Heracross has Swords Dance or not.

Scolipede: I'm not sure why Gliscor and Lando-T are SSI, but Garchomp could be SSI too since LO Scolipede has the 3HKO if it wants to kill.

Aqua Tail. I'm good with adding Garchomp, though.

Good with everything else, thanks!

Also, I'm going to be leaving on vacation tomorrow for a week, so the next updates (if any) will have to wait until next weekend.

 

[SketchUp]

Agent Gibbs
You probably won't add every E rank pokemon because that will take too much work and the pokemon in this rank are so niche that they probably don't need to be added here. However, I would add both Nidoking and Nidoqueen because they are D rank now

Hide

Mega Beedrill:
Defensive Nidoqueen never gets 2hko'd by Drill Run and it takes both STABs really well. Defensive Queen 2hko's but is 3hko'd by Drill Run. Offensive Queen ohko's but is 2hko'd by Drill Run. Offensive Nidoking barely lives a Drill Run but OHKOs back. Nidoqueen to SSI, Nidoking to NSI

Breloom:
Defensive Nidoqueen can take 7 - 8 Bullet Seeds but can't switch in against Spore. Offensive Nido's can both take a Mach Punch and OHKO back. Nidoqueen to SSI, Nidoking to NSI

Clefable:
As far as I know Tankfable doesn't run Ice Beam so both Nidoking and Nidoqueen can switch in safely against every set. CM sets can't do anything to offensive queen / king. I think you didn't consider Tankfable as an option when looking for counters because pokemon like Metagross and Heatran are also included (who are 2hkod by LO Fire Blast / Focus Blast) so both Nido's can go to GSI

Dragalge:
Both NSI

Mega Heracross:
Mega Heracross can never OHKO Nidoking and it is outspeed by it. Fire Blast OHKOs Mega Heracross but idk if Nidoking runs that in OU. If it does, then Nidoking -> SSI

Terrakion:
Nidoqueen can switch in against Scarf sets. Takes 2 Earthquakes but fails to OHKO but it can switch in against every other move so I think SSI is fine for Nidoqueen as it can also take a LO CC + LO EQ and OHKO after the defense drop

Toxicroak:
Nidoqueen counters SD sets but loses to +2 Sucker Punch if it switched in before against Drain Punch with rocks up. Defensive Nidoqueen can also take 2 Ice Punches but lack of recovery means it can't counter 100%: SSI
Nidoking loses to +2 Sucker Punch and 2 Ice Punches but it is a very reliable revengekiller: NSI

 

[Celticpride]

SketchUp I'm pretty sure only B- and above are done right now, no need to worry about E rank.

Edit: misinterpreted your post, my bad. Thought you meant to add them to the list lol.

 

[SketchUp]

SketchUp I'm pretty sure only B- and above are done right now, no need to worry about E rank.

The list of threats is B- yeah, but the list of checks also include lower ranks. Like there is Mence in Excadrill checks, Chandelure in Alakazam checks and Rotom-H in Altaria checks. Neither of these are B- or higher (they are D / C-) Nido's are D now so they should also be added in the list of GSI / SSI / NSI imo but my question was if E ranks also needed to be added (my answer would be no btw)

 

[Random Passerby]

1) Add Suicune to SSI for Clefable (can set up CM in front of it, laughs at status with Rest and is faster so isn't as bothered by Encore)
2) Add Zard-Y to SSI for Excadrill (can come in on anything except Rock Slide, takes away Sand and OHKOes with Fire Blast)

 

[Isa Simple]

I don't really understand a few of the Mamoswine GSIs

From what I can tell all mega Scizor sets are (or have a decent chance to be) 2HKOed by EQ after SR, and the all fail to OHKO with Bullet Punch.
Regular CB Scizor makes sense though, as Bullet Punch is guaranteed OHKO and Mamo can't OHKO it.

Mega Slowbro is beaten by Freeze Dry variants.
16 SpA Life Orb Mamoswine Freeze-Dry vs. 252 HP / 0 SpD Mega Slowbro: 182-218 (46.1 - 55.3%) -- 61.3% chance to 2HKO
16 SpA Life Orb Mamoswine Freeze-Dry vs. 252 HP / 0 SpD Mega Slowbro: 182-218 (46.1 - 55.3%) -- guaranteed 2HKO after Stealth Rock

Mew has a decent chance of being 2HKOed after SR (unless there is some other common Mew set that runs more Def investment).
240 Atk Life Orb Mamoswine Earthquake vs. 252 HP / 104+ Def Mew: 173-204 (42.8 - 50.4%) -- 41.8% chance to 2HKO after Stealth Rock and Leftovers recovery

Also how do multi hit moves work when considering GSIs? From Mega Venusaur being listed I'm assuming we are standardising it to 3 hits. But;
240 Atk Life Orb Mamoswine Icicle Spear (5 hits) vs. 252 HP / 240+ Def Thick Fat Mega Venusaur: 170-210 (46.7 - 57.6%) -- approx. 94.9% chance to 2HKO
I guess getting 5 hits twice (or 4 and 5 + SR), is sort of disregarded as is critting right? Due to unlikely hood?

 

[DarkNostalgia]

I don't really understand a few of the Mamoswine GSIs

From what I can tell all mega Scizor sets are (or have a decent chance to be) 2HKOed by EQ after SR, and the all fail to OHKO with Bullet Punch.
Regular CB Scizor makes sense though, as Bullet Punch is guaranteed OHKO and Mamo can't OHKO it.

Mega Slowbro is beaten by Freeze Dry variants.
16 SpA Life Orb Mamoswine Freeze-Dry vs. 252 HP / 0 SpD Mega Slowbro: 182-218 (46.1 - 55.3%) -- 61.3% chance to 2HKO
16 SpA Life Orb Mamoswine Freeze-Dry vs. 252 HP / 0 SpD Mega Slowbro: 182-218 (46.1 - 55.3%) -- guaranteed 2HKO after Stealth Rock

Mew has a decent chance of being 2HKOed after SR (unless there is some other common Mew set that runs more Def investment).
240 Atk Life Orb Mamoswine Earthquake vs. 252 HP / 104+ Def Mew: 173-204 (42.8 - 50.4%) -- 41.8% chance to 2HKO after Stealth Rock and Leftovers recovery

Also how do multi hit moves work when considering GSIs? From Mega Venusaur being listed I'm assuming we are standardising it to 3 hits. But;
240 Atk Life Orb Mamoswine Icicle Spear (5 hits) vs. 252 HP / 240+ Def Thick Fat Mega Venusaur: 170-210 (46.7 - 57.6%) -- approx. 94.9% chance to 2HKO
I guess getting 5 hits twice (or 4 and 5 + SR), is sort of disregarded as is critting right? Due to unlikely hood?

Just a minor nitpick, but Calm Mind Mega Slowbro, the most common set, avoids the 2HKO from Freeze Dry: 12 SpA Life Orb Mamoswine Freeze-Dry vs. 252 HP / 176 SpD Mega Slowbro: 148-174 (37.5 - 44.1%) -- 2% chance to 2HKO after Stealth Rock
No problem with the rest of the content though.

 

[Fire-breather Richard]

1) I think Slowking can be a SSI to Alakazam and it's Mega since it only fears Shadow Ball while 2HKOing back with Scald.

vs LO Zam

252 SpA Life Orb Alakazam Psychic vs. 248 HP / 96 SpD Assault Vest Slowking: 55-66 (13.9 - 16.7%) -- possible 6HKO
252 SpA Life Orb Alakazam Shadow Ball vs. 248 HP / 96 SpD Assault Vest Slowking: 133-159 (33.8 - 40.4%) -- guaranteed 3HKO
164+ SpA Slowking Scald vs. 0 HP / 0 SpD Alakazam: 117-138 (46.6 - 54.9%) -- 61.3% chance to 2HKO

vs Mega Zam

252 SpA Mega Alakazam Shadow Ball vs. 248 HP / 96 SpD Assault Vest Slowking: 124-146 (31.5 - 37.1%) -- 77.4% chance to 3HKO
252 SpA Mega Alakazam Psychic vs. 248 HP / 96 SpD Assault Vest Slowking: 51-61 (12.9 - 15.5%) -- possible 7HKO
164+ SpA Slowking Scald vs. 0 HP / 0 SpD Mega Alakazam: 117-138 (46.6 - 54.9%) -- 61.3% chance to 2HKO

2) Infernape can be SSI to Breloom if it is the Physically Defensive set. It can even opt to Speed Creep Breloom (by running 44 Spe) and burn it to make the damage even less.

vs Breloom

252 Atk Technician Breloom Bullet Seed (3 hits) vs. 212 HP / 252+ Def Infernape: 81-99 (23.4 - 28.6%) -- possible 5HKO after Leftovers recovery
252 Atk Technician Breloom Rock Tomb vs. 212 HP / 252+ Def Infernape: 88-104 (25.4 - 30%) -- 0.2% chance to 4HKO after Leftovers recovery
0 Atk Infernape Close Combat vs. 0 HP / 4 Def Breloom: 160-189 (61.3 - 72.4%) -- guaranteed 2HKO

3) Celebi as NSI to Crawdaunt (Outspeed and OHKO)

vs Crawdaunt

252 Atk Life Orb Adaptability Crawdaunt Crabhammer vs. 252 HP / 148+ Def Celebi: 105-125 (25.9 - 30.9%) -- 6.3% chance to 4HKO after Leftovers recovery
252 Atk Life Orb Adaptability Crawdaunt Aqua Jet vs. 252 HP / 148+ Def Celebi: 43-51 (10.6 - 12.6%) -- possibly the worst move ever
0 SpA Celebi Giga Drain vs. 4 HP / 0 SpD Crawdaunt: 260-308 (97 - 114.9%) -- 81.3% chance to OHKO

4) Gallade as NSI to Dragalge (Outspeed and OHKO)

vs Dragalge

252 Atk Gallade Zen Headbutt vs. 200 HP / 0 Def Dragalge: 278-330 (86.6 - 102.8%) -- 12.5% chance to OHKO

 

[Albacore]

I've run through the compendium and I have a lot of comments and suggestions. A lot of these take status and access to recovery into account, which kinda complexifies things but gives a more accurate picture of what can be called a "safe swicthin" imo :

• Gliscor should probably be added as an SSI for both Alakazams, it only really uses HP Ice which isn't common on zam, especiallythe mega
• Weavile in an NSI for regular Alakazam
• Torn-T is probably an SSI for regular, only an NSI for its Mega
• I'd put Talonflame in GSI for Altaria honestly, even if SR are up, bulky Talonflame deals with pretty much all variants very well, and though it can technically lose it's very unlikely. On the other hand, I don't think MMetagross qualifies as a GSI since it takes a ton from both Fire Blast and +1 EQ, and loses to the DD variant with just a little bit of prior damage. It also loses to Cotton Guard Altarai if it holds off its MEvo.
• Toxicroak can probably be bumped since it takes nothing from 3/4 of Azu's moves and easily checks BD.
• Honestly Bisharp is kind of a mess atm. have a hard time seeing Heatran as a Bisharp SSI, let alone a GSI, given that even Phys Def sets can be OHKOed by +2 LO Knock Off after SR, and Sub and WOW are both uncommon on faster sets, which take a ton from unboosted Knock Off anyway. Also if you're going to have Terrakion as an SSI, Breloom, Heracross Diancie, Lopunny, Hydreigon and all the other Dark resists that take a lot from Iron Head should be considered SSIs too (heck, all of these bar Diancie aren't OHKOed by Iron Head unlike Terrak). I also have a hard time seeing MDoom as a GSI when in the long run it's not a very good answer to Bisahrp due to the SR weakness and lack of recovery, if MDoom was my only Bisharp check I'd rethink my team personally. Also Talonflame is defenitely an SSI, bulky WoW variants take little from Knock Off due to no item and can just burn it.
• Personally I wouldn't put anything that can be Spored in Breloom GSIs but maybe that's just me. Also Tangrowth is defenitely an SSI if not a GSI imo.
• I wouldn't put Chansey in Celebi GSIs since, although it doeswall it, it does nothing to stop Celebi from passing 6 NP boosts away to literally anything else.
• Hippowdon is a really iffy XZard GSI imo since Flare Blitz can 2HKO even max phys def variants
• Not sure how Chansey qualifies as a Clefable GSI since Skill Swap isn't on the standard analysis and it needs that to beat it. TWave can technically win but then you're reling on hax so eh.
• Gallade isn't really a Conk GSI IMO since Sheer Force Poison Jab does a huge amount.
• What's stopping Chesnaught from being a Crawadaunt GSI? Aerial Ace? Afaik literally no-one runs at so I'd say Chesanught is a pretty safe counter to Daunt.
• Gliscor is a Diancie SSI
• Not 100% sure I'd call Heatran a GSI to Dragalge when most carry Scald. Also Chansey is defnitely a GSI to that thing, Bronzong too imo
• Personally I'd bump Diancie up to an SSI for Dragonite since it completely walls DD+Fire Punch variants, and generally speaking does just as well vs it than vs Heatran (minus Iron Head)
• Celebi is probably an Excadrill SSI, if it can avoid getting flinched.
• A lot of Hippowdon carry Toxic so I'm not sure I'd put Hippo in GSI (or Cress or P2 for that matter, but at least they can OHKO it back). Mega Altaria is IMO an SSI or even GSI since Hyper Voice OHKOs and +2 EQ can't OHKO back. MVenu probably deserves an SSI mention too.
• WoW is standard on Gardevoir so I'd put MMetagross in SSI instead of GSI
• If Dragalge is considered a Gengar GSI than Tentacruel probably should too (TBolt being far less common than Icy Wind). Meag Scizor is probably an SSI since it actually handles standard LO Genagr very well with a SpD spread. Also, probably add Blissey to GSI since it can get rid of Gengar via Ice Beam/Flamethrower
• Torn-T is a Gliscor SSI, Icy Wind/HP Ice is pretty standard on the AV set nowadays.
• Starmie, Manaphy, and Gliscor are all Heatran GSIs IMO, personally I consider these three to be the best Heatran switchins since, although they lose to uncommon stuff like HP Ice and PowerBeam, they all have ways of getting rid of Toxic unlike every single other Pokemon listed in GSIs (and in the end, Toxic is what makes Heatran so annoying to siwtch into more than anything). Chansey should be moved to SSIs IMO since it loses to Taunt+Magam Storm, MGyarados too because of Lava Plume burns and Toxic, same for TTar.
• Don't see how Hawlucha is a MHera GSI when Adamant Rock Blast almost always OHKOs after SR.
• Chansey is 2HKOed by standard Superpower Hydreigon after SR so this defneiotely doesn't qualify as an SSI IMO
• I'd move Maltaria down to SSIs for Keldeo, Specs Icy Wind has a chance to 2HKO after SR no matter how muhc SpD you run on it
• Bisahrp isn't an MLatias GSI since it loses to Reflect Type, same deal for Tyranitar and MMetagross to a lesser extent.
• IMO Heatran should be listed somewhere in Magnezone checks, probably under NSI since it still doenst' stop Volt Swicth.
• Clefable and Chansey lose to Rain Dance TG Manaphy so I'd remove then from GSIs
• Slowbro and Celebi are both MMedi SSis: they lose to Thunder and Ice Punch respectively
• Rotom-W should be mentioned in MMetagross NSIs or SSIs
• Personally I don't think Lando-T is a Pinsir GSI when Scarf in OHKOed by Return after SR while PhysDef is OHKOed at +2, all thanks to Hyper Cutter
• Not sure what Celebi is supposed to do to Serperior, in any case +2 HP Fire 2HKOs while unboosted Psychic does only around 40%. Chansey should also be moved to SSIs since it struggles against Taunt sets.
• Rotom-W isn't a Starmie GSI since it's 2HKOed by LO Psychic
• Add Thundurus to Suicune checks
• Regular Slowbro and Suicune are missing in Talonflame GSIs. I think it's safe to call Lando-T an SSI since it deals with non-Wisp sets pretty well.
• I'd personally bump Altaria up to SSIs for Terrakion since the bulky set handles it pretty well.
• I'd move Hippwdon and Swapert to Thundurus SSis becuase of Grass Knot. Celebi also has a hard time vs Nasty Plot variants so it's probably just an SSI too
• Heatran is a Torn-T NSI IMO, it beats those without Fighting coverage and can somewhat check it with Scarf
• Adamant Banded Head Smash from Tyrantrul actually 2HKOs MSlowbro after SR, so not a GSI
• Latios should be added to Volcarona NSIs, Bug Buzz doesn't appear on all sets.
• Quagsire is a Weavile GSI, Suicune an SSI.

 

[Agent Gibbs]

Okay, so after a long week of vacation I'm finally back at it! Let's see what we've got here.

Agent Gibbs
You probably won't add every E rank pokemon because that will take too much work and the pokemon in this rank are so niche that they probably don't need to be added here. However, I would add both Nidoking and Nidoqueen because they are D rank now

Yeah, I probably won't go through the entire E Rank for checks at the moment since there's just so much stuff there, but I'm perfectly fine with adding E Rank Pokemon as checks if there's any that will fit. Like I said in the OP, I want to include as many options as possible when discussing potential checks within reason. I've kinda got the same mindset that CTC did where I think you should always keep your options open to even some of the more unusual choices since you never know when that one random lower tier Pokemon will fulfill just the right niche on your team. I still want to keep it within reason, though (so no Ferroseeds, sadly), but E Rank is plenty reasonable enough.

That said, I've added your Nidoking and Nidoqueen stuff. Thanks!

Also how do multi hit moves work when considering GSIs? From Mega Venusaur being listed I'm assuming we are standardising it to 3 hits. But;
240 Atk Life Orb Mamoswine Icicle Spear (5 hits) vs. 252 HP / 240+ Def Thick Fat Mega Venusaur: 170-210 (46.7 - 57.6%) -- approx. 94.9% chance to 2HKO
I guess getting 5 hits twice (or 4 and 5 + SR), is sort of disregarded as is critting right? Due to unlikely hood?

Yeah, that's actually a good question. I used Icicle Crash for the calcs since it's considerably more common than Icicle Spear and it's much simpler. Multi-hit moves are tricky, though. Forgive me while I think out loud for a second.

Okay, so the chances of hitting a certain number of times have the following percentages: 2 hits = 33.3%, 3 hits = 33.3%, 4 hits = 16.7%, 5 hits = 16.7%. Assuming we're just talking about 2 Icicle Spears in a row, let's look at the probability that Mamoswine gets 9 or 10 hits. The only events where this can happen are with 4+5, 5+4, or 5+5. Given the above probabilities, assuming I'm doing my statistics right, the probability of any one of these events happening is 0.167*0.167 + 0.167*0.167 + 0.167*0.167 = 8.37%, which is only slightly higher than the chance of a crit and not even as high as the chance to get a random freeze with Ice Beam or something. Not too much of a concern. Now, if we include the possibility of 8 hits, we also have to include the events 3+5, 5+3, and 4+4. Therefore, the chance of Mamoswine getting 8 or more hits is 22.3%, which is much more of a concern.

Since the probability of getting 9 or 10 hits is much less significant and therefore a lot easier to dismiss, maybe we can say that a Pokemon just has to be able to survive at least 8 hits to be a GSI. That said, defensive Mega Venusaur is only 2HKOed ~9% of the time by 8 Icicle Spear hits after Stealth Rock, which is even lower given the chance of actually getting 8 hits, so I guess it's uncommon enough that Mega Venusaur is okay as a GSI. Maybe not though, I'd like a second opinion on this lol. Also on if 8 hits should be the benchmark of if it should be lower/higher.

There's also the possibility that I really screwed up my statistics and this is all wrong, but it is what it is I guess. I added your other suggestions, though. Thanks! Everyone else's that I didn't comment on has been added too!

Also wow Albacore I hate you in the nicest way possible lol. But for real, thanks for going so in-depth. I'll get to your suggestions in due time!

EDIT: Okay, here we go.

Honestly Bisharp is kind of a mess atm. have a hard time seeing Heatran as a Bisharp SSI, let alone a GSI, given that even Phys Def sets can be OHKOed by +2 LO Knock Off after SR, and Sub and WOW are both uncommon on faster sets, which take a ton from unboosted Knock Off anyway. Also if you're going to have Terrakion as an SSI, Breloom, Heracross Diancie, Lopunny, Hydreigon and all the other Dark resists that take a lot from Iron Head should be considered SSIs too (heck, all of these bar Diancie aren't OHKOed by Iron Head unlike Terrak). I also have a hard time seeing MDoom as a GSI when in the long run it's not a very good answer to Bisahrp due to the SR weakness and lack of recovery, if MDoom was my only Bisharp check I'd rethink my team personally. Also Talonflame is defenitely an SSI, bulky WoW variants take little from Knock Off due to no item and can just burn it.

Yeah, I'll move Heatran to SSI since it can still do well against some Bisharp sets, but you're right about SD. As for Terrakion, I'll probably just add it back to NSI. I've got to draw a line between SSI and NSI somewhere, and I guess that line will be losing to a threat's STABs. Agree with Talonflame and Mega Houndoom.

Personally I wouldn't put anything that can be Spored in Breloom GSIs but maybe that's just me. Also Tangrowth is defenitely an SSI if not a GSI imo.

Meh, tricky case because just about everything in the game that isn't immune to Spore fears it, so it feels weird considering that when it invalidates so many checks. I'll have to think about it, but Tangrowth is good.

Bisahrp isn't an MLatias GSI since it loses to Reflect Type, same deal for Tyranitar and MMetagross to a lesser extent.

I'll keep Tyranitar since it can still hit slam Mega Latias with Superpower even after Reflect Type. Other two have been dropped.

Latios should be added to Volcarona NSIs, Bug Buzz doesn't appear on all sets.

Latios actually fails to OHKO with Psyshock without some significant prior damage and is 2HKOed a good portion of the time by a +1 Fire Blast. Latias and her Mega are another story, though, so I think those two could fit in SSI.

Got everything else. Again, thanks for looking at this in such great detail!

 

[TPP]

Why don't you have Infernape on the list? It's in the same rank as Lucario and Mega Houndoom, so could you add it please?

Also, AV Slowking could be SSI for Manaphy. Sets without Energy Ball won't be able to do anything. Slowking doesn't exactly get rid of Manaphy quickly, but Manaphy struggles with it even if it sets up.

Calcs

252 SpA Manaphy Energy Ball vs. 248 HP / 96 SpD Assault Vest Slowking: 92-110 (23.4 - 27.9%) -- 82.4% chance to 4HKO

+3 252 SpA Manaphy Energy Ball vs. 248 HP / 96 SpD Assault Vest Slowking: 230-272 (58.5 - 69.2%) -- guaranteed 2HKO

+6 252 SpA Manaphy Scald vs. 248 HP / 96 SpD Assault Vest Slowking: 123-144 (31.2 - 36.6%) -- 69.9% chance to 3HKO

164+ SpA Slowking Psyshock vs. 96 HP / 0 Def Manaphy: 111-132 (30.4 - 36.1%) -- 50.5% chance to 3HKO after Stealth Rock and Leftovers recovery

 

[Tentacruel<3]

You should add Raikou to Magnezones SSI

 

[Analytic]

You should add Raikou to Magnezones SSI

Why not GSI? What does Raikou fear from a Magnezone?

 

[SketchUp]

Why not GSI? What does Raikou fear from a Magnezone?

AV sets are 4hko'd after rocks while they can only 3hko back 1.9% of the time
Specs sets only 2hko Magnezone after rocks 3.9% of the time while it is always 3hkod
So it can't switch in and always win 1v1. Especially when considering rocks Raikou can only switch in once against Volt Switch and then just loses 1v1 due to lack of recovery.

Used 172 / 252 / 84 Specs to calc without Aura Sphere on Raikou fyi.

 

[Analytic]

AV sets are 4hko'd after rocks while they can only 3hko back 1.9% of the time
Specs sets only 2hko Magnezone after rocks 3.9% of the time while it is always 3hkod
So it can't switch in and always win 1v1. Especially when considering rocks Raikou can only switch in once against Volt Switch and then just loses 1v1 due to lack of recovery.

Used 172 / 252 / 84 Specs to calc without Aura Sphere on Raikou fyi.

I think GSI and counters are different. What do you say Agent Gibbs are we treating GSIs as counters in your compendium?

 

[Fredrick1]

Just some insight:

Tornadus Therian shouldn't be a GSI for Keldeo? A fairly popular/common combination of Icy Wind + Choice Specs Keldeo actually defeats standard AV Tornadus Therian after rocks, factoring in the Speed drop.
252 SpA Choice Specs Keldeo Icy Wind vs. 132 HP / 0 SpD Assault Vest Tornadus-T: 132-156 (39.7 - 46.9%) -- guaranteed 2HKO after Stealth Rock

If SpD Jirachi is considered a GSI for M-Alakazam, that shouldn't SpD Mew fall into GSI category too? Mew's base stat = Jirachi's base stat. In theory Jirachi's typing doesn't particularly stand over Mew in countering M-Alakazam. Mew got recovery too right?? Maybe I'm missing anything??
252 SpA Mega Alakazam Shadow Ball vs. 252 HP / 224+ SpD Mew: 160-190 (39.6 - 47%) -- guaranteed 3HKO after Leftovers recovery
252 SpA Mega Alakazam Shadow Ball vs. 252 HP / 224+ SpD Jirachi: 160-190 (39.6 - 47%) -- guaranteed 3HKO after Leftovers recovery
0 Atk Mew Knock Off vs. 0 HP / 4 Def Mega Alakazam: 134-158 (53.3 - 62.9%) -- guaranteed 2HKO after Stealth Rock

Clefable shouldn't be considered as a good switch in of M-Medicham
252+ Atk Pure Power Mega Medicham Zen Headbutt vs. 248 HP / 252+ Def Clefable: 210-247 (53.4 - 62.8%) -- guaranteed 2HKO after Leftovers recovery
252 Atk Pure Power Mega Medicham Zen Headbutt vs. 248 HP / 252+ Def Clefable: 192-226 (48.8 - 57.5%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
252 Atk Pure Power Mega Medicham Zen Headbutt vs. 252 HP / 172 Def Clefable: 229-270 (58.1 - 68.5%) -- guaranteed 2HKO after Leftovers recovery

Thats all I could spot in the meanwhie.

 

[Agent Gibbs]

Why don't you have Infernape on the list? It's in the same rank as Lucario and Mega Houndoom, so could you add it please?

Oh yeah, Infernape. It was only added to the B Ranks fairly recently IIRC, so I probably just missed it. It was mainly known for the fairly passive defensive set for a while, but since the mixed set has been gaining traction lately, I can add an entry for that when I get the time.

I think GSI and counters are different. What do you say Agent Gibbs are we treating GSIs as counters in your compendium?

Well, sorta. I mean, the definition of a GSI is a Pokemon that can switch into virtually anything a Pokemon can throw at it and win, which is the definition of a counter more or less. The only reason I'm not using "check" and "counter" for these categories is just because for some reason people keep arguing about what the terms actually mean. I guess I could just define them in the OP and force everyone else to go by those definitions lol, but I'll stick with these more practical definitions for now.

Got all the other stuff.