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
Ceruledge
FireGhost
OFFENSIVE CHECK
36.219
85.3%
checker faints 5.88%
▾
252+ Atk Ceruledge Bitter Blade vs. 252 HP / 0 Def Corviknight: 302-356 (75.5 - 89%) -- guaranteed 2HKO
02
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
143.691
85.1%
checker faints 4.95%
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Corviknight in Sun: 650-768 (162.5 - 192%) -- guaranteed OHKO
03
Heatran
FireSteel
OFFENSIVE CHECK
138.579
83.8%
checker faints 5.39%
▾
252+ SpA Heatran Eruption (150 BP) vs. 252 HP / 252+ SpD Corviknight: 432-510 (108 - 127.5%) -- guaranteed OHKO
04
Gholdengo
SteelGhost
OFFENSIVE CHECK
459.326
83.1%
checker faints 2.83%
▾
252+ SpA Gholdengo Shadow Ball vs. 252 HP / 252+ SpD Corviknight: 118-139 (29.5 - 34.7%) -- 10.4% chance to 3HKO
05
Latios-Mega
DragonPsychic
OFFENSIVE CHECK
60.121
78.4%
checker faints 5.31%
▾
252+ SpA Latios-Mega Mystical Fire vs. 252 HP / 252+ SpD Corviknight: 170-200 (42.5 - 50%) -- 0.4% chance to 2HKO
06
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
108.544
75.8%
checker faints 7.04%
▾
252+ Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 252 HP / 0 Def Corviknight: 536-632 (134 - 158%) -- guaranteed OHKO
07
Terapagos
Normal
DEFENSIVE COUNTER
294.058
74.7%
checker faints 4.32%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 252+ Def Terapagos: 132-156 (34.3 - 40.6%) -- guaranteed 3HKO
08
Sableye-Mega
DarkGhost
DEFENSIVE COUNTER
37.86
74.0%
checker faints 7.13%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 252+ Def Sableye-Mega: 102-120 (33.5 - 39.4%) -- guaranteed 3HKO
09
Medicham-Mega
FightingPsychic
OFFENSIVE CHECK
25.195
73.2%
checker faints 8.83%
▾
252+ Atk Pure Power Medicham-Mega High Jump Kick vs. 252 HP / 0 Def Corviknight: 373-439 (93.2 - 109.7%) -- 56.3% chance to OHKO
10
Volcarona
BugFire
OFFENSIVE CHECK
149.446
71.6%
checker faints 5.84%
▾
252+ SpA Volcarona Flamethrower vs. 252 HP / 252+ SpD Corviknight: 266-314 (66.5 - 78.5%) -- guaranteed 2HKO
11
Tapu Fini
WaterFairy
DEFENSIVE COUNTER
25.67
69.8%
checker faints 9.06%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 252+ Def Tapu Fini: 108-127 (31.3 - 36.9%) -- guaranteed 4HKO after Leftovers recovery
12
Raging Bolt
ElectricDragon
OFFENSIVE CHECK
219.466
68.1%
checker faints 5.39%
▾
252+ SpA Choice Specs Raging Bolt Thunderbolt vs. 252 HP / 252+ SpD Corviknight: 404-476 (101 - 119%) -- guaranteed OHKO
13
Tornadus-Therian
Flying
OFFENSIVE CHECK
225.205
67.8%
checker faints 5.04%
▾
252+ SpA Tornadus-Therian Heat Wave vs. 252 HP / 252+ SpD Corviknight: 162-192 (40.5 - 48%) -- guaranteed 3HKO
14
Iron Moth
FirePoison
OFFENSIVE CHECK
20.515
66.7%
checker faints 10.41%
▾
252+ SpA Iron Moth Fiery Dance vs. 252 HP / 252+ SpD Corviknight: 242-288 (60.5 - 72%) -- guaranteed 2HKO
15
Keldeo
WaterFighting
OFFENSIVE CHECK
50.762
64.4%
checker faints 9.50%
▾
252+ SpA Keldeo Hydro Pump vs. 252 HP / 252+ SpD Corviknight: 157-186 (39.2 - 46.5%) -- guaranteed 3HKO
16
Hoopa-Unbound
PsychicDark
OFFENSIVE CHECK
31.765
63.9%
checker faints 8.52%
▾
252+ Atk Hoopa-Unbound Hyperspace Fury vs. 252 HP / 0 Def Corviknight: 202-238 (50.5 - 59.5%) -- guaranteed 2HKO
17
Diancie-Mega
RockFairy
OFFENSIVE CHECK
185.736
62.1%
checker faints 5.79%
▾
252+ SpA Diancie-Mega Mystical Fire vs. 252 HP / 252+ SpD Corviknight: 170-200 (42.5 - 50%) -- 0.4% chance to 2HKO
18
Gyarados-Mega
WaterDark
OFFENSIVE CHECK
21.592
59.3%
checker faints 10.57%
▾
252+ Atk Gyarados-Mega Waterfall vs. 252 HP / 0 Def Corviknight: 157-186 (39.2 - 46.5%) -- guaranteed 3HKO
19
Iron Valiant
FairyFighting
OFFENSIVE CHECK
161.675
59.1%
checker faints 6.65%
▾
252+ Atk Iron Valiant Close Combat vs. 252 HP / 0 Def Corviknight: 207-244 (51.7 - 61%) -- guaranteed 2HKO
20
Kyurem
DragonIce
OFFENSIVE CHECK
253.39
56.9%
checker faints 5.25%
▾
252+ SpA Kyurem Ice Beam vs. 252 HP / 252+ SpD Corviknight: 129-153 (32.2 - 38.2%) -- 95.7% chance to 3HKO
21
Hatterene
PsychicFairy
OFFENSIVE CHECK
159.559
56.3%
checker faints 6.48%
▾
252+ SpA Hatterene Mystical Fire vs. 252 HP / 252+ SpD Corviknight: 150-178 (37.5 - 44.5%) -- guaranteed 3HKO
22
Cinderace
Fire
OFFENSIVE CHECK
67.632
55.2%
checker faints 8.36%
▾
252+ Atk Cinderace Pyro Ball vs. 252 HP / 0 Def Corviknight: 384-452 (96 - 113%) -- 75% chance to OHKO
23
Urshifu-Rapid-Strike
FightingWater
SOFT CHECK
105.42
54.0%
checker faints 8.00%
▾
252+ Atk Urshifu-Rapid-Strike Close Combat vs. 252 HP / 0 Def Corviknight: 207-244 (51.7 - 61%) -- guaranteed 2HKO
24
Rotom-Heat
ElectricFire
SOFT CHECK
20.379
53.1%
checker faints 11.05%
▾
252+ SpA Rotom-Heat Overheat vs. 252 HP / 252+ SpD Corviknight: 320-380 (80 - 95%) -- guaranteed 2HKO
25
Moltres
FireFlying
SOFT CHECK
123.015
52.8%
checker faints 7.53%
▾
252+ SpA Moltres Flamethrower vs. 252 HP / 252+ SpD Corviknight: 254-300 (63.5 - 75%) -- guaranteed 2HKO
26
Melmetal
Steel
SOFT CHECK
281.774
52.3%
checker faints 4.93%
▾
252+ Atk Punching Glove Iron Fist Melmetal Thunder Punch vs. 252 HP / 0 Def Corviknight: 244-288 (61 - 72%) -- guaranteed 2HKO
27
Gengar
GhostPoison
SOFT CHECK
144.399
51.8%
checker faints 7.01%
▾
252+ SpA Gengar Shadow Ball vs. 252 HP / 252+ SpD Corviknight: 115-136 (28.7 - 34%) -- 1.8% chance to 3HKO
28
Tapu Koko
ElectricFairy
SOFT CHECK
87.357
50.5%
checker faints 9.17%
▾
252+ SpA Choice Specs Tapu Koko Thunderbolt vs. 252 HP / 252+ SpD Corviknight in Electric Terrain: 408-480 (102 - 120%) -- guaranteed OHKO
29
Zapdos
ElectricFlying
SOFT CHECK
377.794
49.9%
checker faints 4.32%
▾
252+ SpA Zapdos Thunderbolt vs. 252 HP / 252+ SpD Corviknight: 254-300 (63.5 - 75%) -- guaranteed 2HKO
30
Ogerpon-Wellspring
GrassWater
SOFT CHECK
245.712
48.6%
checker faints 5.36%
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Ivy Cudgel vs. 252 HP / 0 Def Corviknight: 195-231 (48.7 - 57.7%) -- 95.7% chance to 2HKO
Ranked #16 with 10.62% usage. Sorted by reliability score.