Reliability ranks observed matchups; KO rate is how often the checker knocked out or forced out the target. “Checker faints” reports the checker's own observed death rate. Categories use matchup reliability plus offensive and defensive base stats.
How to read this table
Use encounter count to judge sample size. A high-reliability check with a modest KO rate can still be useful when it consistently forces switches or limits the target.
#
Checker
Encounters
Reliability
KO Rate
01
Manaphy
Water
DEFENSIVE COUNTER
20.306
98.4%
checker faints 2.77%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Manaphy: 105-124 (25.9 - 30.6%) -- 3.5% chance to 4HKO after Leftovers recovery
02
Volcanion
FireWater
DEFENSIVE COUNTER
21.623
93.7%
checker faints 5.21%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Volcanion: 186-218 (51 - 59.8%) -- guaranteed 2HKO
03
Serperior
Grass
DEFENSIVE COUNTER
47.469
88.5%
checker faints 6.53%
▾
252+ Atk Gliscor Knock Off (97.5 BP) vs. 252 HP / 252+ Def Serperior: 70-83 (19.7 - 23.4%) -- possible 5HKO
04
Kyurem
DragonIce
OFFENSIVE CHECK
393.679
85.9%
checker faints 2.97%
▾
252+ SpA Kyurem Ice Beam vs. 252 HP / 252+ SpD Gliscor: 564-664 (159.3 - 187.5%) -- guaranteed OHKO
05
Pinsir-Mega
BugFlying
OFFENSIVE CHECK
53.75
84.2%
checker faints 6.86%
▾
252+ Atk Aerilate Pinsir-Mega Double-Edge vs. 252 HP / 0 Def Gliscor: 243-286 (68.6 - 80.7%) -- guaranteed 2HKO
06
Ogerpon-Wellspring
GrassWater
OFFENSIVE CHECK
475.629
81.1%
checker faints 3.06%
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Ivy Cudgel vs. 252 HP / 0 Def Gliscor: 338-398 (95.4 - 112.4%) -- 75% chance to OHKO
07
Weavile
DarkIce
OFFENSIVE CHECK
53.413
80.9%
checker faints 7.55%
▾
252+ Atk Choice Band Weavile Triple Axel (120 BP) (3 hits) vs. 252 HP / 0 Def Gliscor: 1012-1204 (285.8 - 340.1%) -- guaranteed OHKO
08
Kartana
GrassSteel
OFFENSIVE CHECK
50.715
80.6%
checker faints 5.55%
▾
252+ Atk Kartana Giga Impact vs. 252 HP / 0 Def Gliscor: 191-225 (53.9 - 63.5%) -- guaranteed 2HKO
09
Medicham-Mega
FightingPsychic
OFFENSIVE CHECK
29.992
79.2%
checker faints 7.41%
▾
252+ Atk Pure Power Medicham-Mega Ice Punch vs. 252 HP / 0 Def Gliscor: 496-584 (140.1 - 164.9%) -- guaranteed OHKO
10
Dragonite
DragonFlying
OFFENSIVE CHECK
279.645
78.5%
checker faints 4.24%
▾
252+ Atk Dragonite Ice Spinner vs. 252 HP / 0 Def Gliscor: 324-384 (91.5 - 108.4%) -- 50% chance to OHKO
11
Ursaluna
GroundNormal
OFFENSIVE CHECK
215.091
78.0%
checker faints 4.81%
▾
252+ Atk Ursaluna Ice Punch vs. 252 HP / 0 Def Gliscor: 316-372 (89.2 - 105%) -- 31.3% chance to OHKO
12
Meowscarada
GrassDark
OFFENSIVE CHECK
20.551
76.4%
checker faints 9.37%
▾
252+ Atk Protean Meowscarada Triple Axel (120 BP) (3 hits) vs. 252 HP / 0 Def Gliscor: 640-764 (180.7 - 215.8%) -- guaranteed OHKO
13
Melmetal
Steel
DEFENSIVE COUNTER
329.353
76.2%
checker faints 4.05%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Melmetal: 162-192 (34.1 - 40.5%) -- guaranteed 3HKO
14
Latios-Mega
DragonPsychic
OFFENSIVE CHECK
235.9
73.6%
checker faints 4.86%
▾
252+ SpA Latios-Mega Ice Beam vs. 252 HP / 252+ SpD Gliscor: 436-516 (123.1 - 145.7%) -- guaranteed OHKO
15
Scizor-Mega
BugSteel
OFFENSIVE CHECK
343.444
71.9%
checker faints 4.15%
▾
252+ Atk Scizor-Mega Knock Off (97.5 BP) vs. 252 HP / 0 Def Gliscor: 107-126 (30.2 - 35.5%) -- 30.6% chance to 3HKO
16
Ferrothorn
GrassSteel
DEFENSIVE COUNTER
316.264
71.6%
checker faints 4.34%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Ferrothorn: 87-103 (24.7 - 29.2%) -- possible 5HKO
17
Blaziken
FireFighting
OFFENSIVE CHECK
21.309
69.8%
checker faints 9.94%
▾
252+ Atk Blaziken Flare Blitz vs. 252 HP / 0 Def Gliscor: 169-199 (47.7 - 56.2%) -- 83.6% chance to 2HKO
18
Great Tusk
GroundFighting
DEFENSIVE COUNTER
432.997
68.1%
checker faints 3.83%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Great Tusk: 87-103 (20 - 23.7%) -- guaranteed 5HKO
19
Tapu Fini
WaterFairy
DEFENSIVE COUNTER
98.555
64.1%
checker faints 8.30%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Tapu Fini: 94-112 (27.3 - 32.5%) -- 72.6% chance to 4HKO after Leftovers recovery
20
Skarmory
SteelFlying
DEFENSIVE COUNTER
190.955
64.0%
checker faints 5.82%
▾
252+ Atk Gliscor Knock Off (97.5 BP) vs. 252 HP / 252+ Def Skarmory: 54-64 (16.1 - 19.1%) -- possible 6HKO
21
Kommo-o
DragonFighting
DEFENSIVE COUNTER
22.409
63.7%
checker faints 10.16%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Kommo-o: 90-106 (25.4 - 29.9%) -- guaranteed 4HKO
22
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
341.712
63.5%
checker faints 4.45%
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Gliscor in Sun: 352-415 (99.4 - 117.2%) -- 93.8% chance to OHKO
23
Iron Valiant
FairyFighting
OFFENSIVE CHECK
256.763
61.5%
checker faints 5.23%
▾
252+ Atk Iron Valiant Ice Punch vs. 252 HP / 0 Def Gliscor: 296-352 (83.6 - 99.4%) -- guaranteed 2HKO
24
Venusaur-Mega
GrassPoison
DEFENSIVE COUNTER
318.589
60.9%
checker faints 4.71%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Venusaur-Mega: 91-108 (25 - 29.6%) -- guaranteed 4HKO
25
Samurott-Hisui
WaterDark
OFFENSIVE CHECK
147.484
60.4%
checker faints 6.84%
▾
252+ Atk Sharpness Samurott-Hisui Razor Shell vs. 252 HP / 0 Def Gliscor: 290-344 (81.9 - 97.1%) -- guaranteed 2HKO
26
Tornadus-Therian
Flying
OFFENSIVE CHECK
475.835
58.0%
checker faints 3.85%
▾
252+ SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Gliscor: 153-180 (43.2 - 50.8%) -- 3.1% chance to 2HKO
27
Volcarona
BugFire
OFFENSIVE CHECK
147.595
57.8%
checker faints 6.84%
▾
252+ SpA Volcarona Flamethrower vs. 252 HP / 252+ SpD Gliscor: 144-171 (40.6 - 48.3%) -- guaranteed 3HKO
28
Ninetales-Alola
IceFairy
DEFENSIVE COUNTER
31.585
57.4%
checker faints 8.80%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Ninetales-Alola in Snow: 84-100 (24 - 28.5%) -- 97.1% chance to 4HKO
29
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
168.585
57.2%
checker faints 6.58%
▾
252+ Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 252 HP / 0 Def Gliscor: 231-273 (65.2 - 77.1%) -- guaranteed 2HKO
30
Dondozo
Water
DEFENSIVE COUNTER
58.691
57.0%
checker faints 8.82%
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 252+ Def Dondozo: 94-112 (18.6 - 22.2%) -- possible 6HKO
Ranked #7 with 15.03% usage. Sorted by reliability score.