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
Kyogre
Water
DEFENSIVE COUNTER
45.124
95.6%
checker faints 3.05%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 252+ Def Kyogre: 127-150 (31.4 - 37.1%) -- 83.4% chance to 3HKO
02
Calyrex-Shadow
PsychicGhost
OFFENSIVE CHECK
393.887
85.2%
checker faints 3.03%
▾
252+ SpA Calyrex-Shadow Astral Barrage vs. 252 HP / 252+ SpD Corviknight: 205-243 (51.2 - 60.7%) -- 91.8% chance to 2HKO after Leftovers recovery
03
Skeledirge
FireGhost
DEFENSIVE COUNTER
116.901
73.9%
checker faints 5.69%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 252+ Def Skeledirge: 118-141 (28.6 - 34.2%) -- 2.8% chance to 3HKO
04
Arceus-Fairy
Fairy
DEFENSIVE COUNTER
66.697
69.5%
checker faints 7.90%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 252+ Def Arceus-Fairy: 105-124 (23.6 - 27.9%) -- 87.5% chance to 4HKO
05
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
29.761
66.9%
checker faints 8.63%
▾
+1 252+ Atk Zacian-Crowned Wild Charge vs. 252 HP / 0 Def Corviknight: 344-406 (86 - 101.5%) -- 12.5% chance to OHKO
06
Miraidon
ElectricDragon
OFFENSIVE CHECK
501.569
66.5%
checker faints 3.62%
▾
252+ SpA Hadron Engine Miraidon Electro Drift (133.3251953125 BP) vs. 252 HP / 252+ SpD Corviknight in Electric Terrain: 680-804 (170 - 201%) -- guaranteed OHKO
07
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
49.484
60.9%
checker faints 6.94%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 252+ Def Calyrex-Ice: 90-106 (22.2 - 26.2%) -- 10.1% chance to 4HKO
08
Koraidon
FightingDragon
OFFENSIVE CHECK
398.24
58.1%
checker faints 4.26%
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Corviknight in Sun: 566-668 (141.5 - 167%) -- guaranteed OHKO
09
Ho-Oh
FireFlying
DEFENSIVE COUNTER
577.832
57.8%
checker faints 3.55%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 252+ Def Ho-Oh: 127-150 (30.5 - 36%) -- 50% chance to 3HKO
10
Eternatus
PoisonDragon
OFFENSIVE CHECK
45.018
57.4%
checker faints 10.31%
▾
252+ SpA Eternatus Flamethrower vs. 252 HP / 252+ SpD Corviknight: 188-222 (47 - 55.5%) -- 14.8% chance to 2HKO after Leftovers recovery
11
Arceus-Ground
Ground
SOFT CHECK
233.726
54.1%
checker faints 5.50%
▾
252+ Atk Arceus-Ground Stone Edge vs. 252 HP / 0 Def Corviknight: 109-129 (27.2 - 32.2%) -- 52.3% chance to 4HKO after Leftovers recovery
12
Hatterene
PsychicFairy
SOFT CHECK
44.027
53.4%
checker faints 7.52%
▾
252+ SpA Hatterene Misty Explosion vs. 252 HP / 252+ SpD Corviknight: 75-88 (18.7 - 22%) -- possible 6HKO
13
Smeargle
Normal
SOFT CHECK
21.759
42.6%
checker faints 10.60%
▾
252+ Atk Smeargle Nuzzle vs. 252 HP / 0 Def Corviknight: 20-24 (5 - 6%)
14
Ribombee
BugFairy
SOFT CHECK
20.756
40.9%
checker faints 10.79%
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Corviknight: 54-65 (13.5 - 16.2%)
15
Kingambit
DarkSteel
SOFT CHECK
59.479
38.7%
checker faints 8.92%
▾
252+ Atk Black Glasses Kingambit Kowtow Cleave vs. 252 HP / 0 Def Corviknight: 181-214 (45.2 - 53.5%) -- 1.2% chance to 2HKO after Leftovers recovery
16
324.618
35.3%
checker faints 4.50%
▾
252+ Atk Arceus Shadow Claw vs. 252 HP / 0 Def Corviknight: 76-90 (19 - 22.5%) -- possible 6HKO
17
Alomomola
Water
SOFT CHECK
159.127
32.3%
checker faints 6.04%
▾
252+ Atk Alomomola Flip Turn vs. 252 HP / 0 Def Corviknight: 72-85 (18 - 21.2%) -- possible 7HKO
18
Corviknight
FlyingSteel
SOFT CHECK
22.89
31.3%
checker faints 9.70%
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 0 Def Corviknight: 78-93 (19.5 - 23.2%) -- possible 6HKO
19
Clodsire
PoisonGround
SOFT CHECK
122.708
29.7%
checker faints 7.06%
▾
20
69.394
29.4%
checker faints 7.52%
▾
252+ Atk Dondozo Wave Crash vs. 252 HP / 0 Def Corviknight: 172-204 (43 - 51%) -- guaranteed 3HKO after Leftovers recovery
21
Gliscor
GroundFlying
SOFT CHECK
308.416
29.4%
checker faints 4.33%
▾
252+ Atk Gliscor Knock Off (97.5 BP) vs. 252 HP / 0 Def Corviknight: 90-106 (22.5 - 26.5%) -- 16.9% chance to 4HKO
22
177.674
22.9%
checker faints 5.38%
▾
Ditto vs. Corviknight: 0-0 (0 - 0%)
23
Necrozma-Dusk-Mane
PsychicSteel
SOFT CHECK
93.778
18.2%
checker faints 6.82%
▾
252+ Atk Necrozma-Dusk-Mane Knock Off (97.5 BP) vs. 252 HP / 0 Def Corviknight: 129-152 (32.2 - 38%) -- 95.7% chance to 3HKO
24
Glimmora
RockPoison
SOFT CHECK
188.117
17.1%
checker faints 4.62%
▾
0- SpA Glimmora Power Gem vs. 252 HP / 252+ SpD Corviknight: 78-93 (19.5 - 23.2%) -- possible 6HKO
25
Skarmory
SteelFlying
SOFT CHECK
78.794
14.9%
checker faints 4.01%
▾
0 Def Skarmory Body Press vs. 252 HP / 0 Def Corviknight: 74-88 (18.5 - 22%) -- possible 6HKO
26
Ting-Lu
DarkGround
SOFT CHECK
173.557
12.9%
checker faints 4.35%
▾
252+ Atk Ting-Lu Stone Edge vs. 252 HP / 0 Def Corviknight: 102-121 (25.5 - 30.2%) -- 0.3% chance to 4HKO after Leftovers recovery
27
Iron Treads
GroundSteel
SOFT CHECK
262.612
11.1%
checker faints 3.08%
▾
252+ Atk Iron Treads Knock Off (97.5 BP) vs. 252 HP / 0 Def Corviknight: 101-119 (25.2 - 29.7%) -- guaranteed 4HKO
Ranked #31 with 3.90% usage. Sorted by reliability score.