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
Kyurem-Black
DragonIce
OFFENSIVE CHECK
227.22
81.1%
checker faints 4.47%
▾
252+ Atk Kyurem-Black Fusion Bolt vs. 252 HP / 0 Def Kyogre: 320-378 (79.2 - 93.5%) -- guaranteed 2HKO
02
Gastrodon
WaterGround
DEFENSIVE COUNTER
33.535
79.2%
checker faints 7.00%
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Gastrodon in Rain: 550-648 (129.1 - 152.1%) -- guaranteed OHKO
03
Blissey
Normal
DEFENSIVE COUNTER
1,891.785
76.7%
checker faints 1.64%
▾
0- Atk Kyogre Liquidation vs. 252 HP / 0 Def Blissey in Rain: 519-612 (72.6 - 85.7%) -- guaranteed 2HKO
04
Kyurem-White
DragonIce
OFFENSIVE CHECK
24.468
73.1%
checker faints 8.97%
05
Zekrom
DragonElectric
OFFENSIVE CHECK
65.534
70.2%
checker faints 7.87%
▾
252+ Atk Life Orb Zekrom Bolt Strike vs. 252 HP / 0 Def Kyogre: 736-868 (182.1 - 214.8%) -- guaranteed OHKO
06
Arceus-Electric
Electric
DEFENSIVE COUNTER
420.226
69.4%
checker faints 3.89%
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Arceus-Electric in Rain: 427-504 (96.1 - 113.5%) -- 75% chance to OHKO
07
Rayquaza
DragonFlying
OFFENSIVE CHECK
191.745
65.0%
checker faints 5.89%
▾
252+ Atk Rayquaza Dragon Ascent vs. 252 HP / 0 Def Kyogre: 262-309 (64.8 - 76.4%) -- guaranteed 2HKO
08
Shaymin-Sky
GrassFlying
OFFENSIVE CHECK
20.422
63.1%
checker faints 10.68%
09
Palkia
WaterDragon
OFFENSIVE CHECK
186.589
62.9%
checker faints 4.59%
▾
252+ SpA Palkia Thunder vs. 252 HP / 252+ SpD Kyogre: 168-198 (41.5 - 49%) -- guaranteed 3HKO
10
Arceus
Normal
DEFENSIVE COUNTER
1,455.687
60.0%
checker faints 2.20%
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Arceus in Rain: 427-504 (96.1 - 113.5%) -- 75% chance to OHKO
11
Clodsire
PoisonGround
DEFENSIVE COUNTER
860.461
59.1%
checker faints 2.87%
▾
252+ SpA Choice Specs Kyogre Ice Beam vs. 252 HP / 252+ SpD Clodsire: 260-306 (56 - 65.9%) -- guaranteed 2HKO
12
Lugia
PsychicFlying
DEFENSIVE COUNTER
22.04
59.0%
checker faints 10.47%
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Lugia in Rain: 357-420 (85.8 - 100.9%) -- 6.3% chance to OHKO
13
Chien-Pao
DarkIce
OFFENSIVE CHECK
107.45
58.6%
checker faints 7.96%
▾
252+ Atk Life Orb Sword of Ruin Chien-Pao Crunch vs. 252 HP / 0 Def Kyogre: 257-304 (63.6 - 75.2%) -- guaranteed 2HKO
14
Palkia-Origin
WaterDragon
OFFENSIVE CHECK
91.646
58.5%
checker faints 5.15%
▾
252+ SpA Lustrous Globe Palkia-Origin Draco Meteor vs. 252 HP / 252+ SpD Kyogre: 177-208 (43.8 - 51.4%) -- 8.2% chance to 2HKO
15
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
2,082.988
57.5%
checker faints 1.87%
▾
+1 252+ Atk Zacian-Crowned Wild Charge vs. 252 HP / 0 Def Kyogre: 392-462 (97 - 114.3%) -- 81.3% chance to OHKO
16
Sableye
DarkGhost
DEFENSIVE COUNTER
25.782
57.4%
checker faints 9.74%
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Sableye in Rain: 631-744 (207.5 - 244.7%) -- guaranteed OHKO
17
Kingambit
DarkSteel
DEFENSIVE COUNTER
485.283
57.1%
checker faints 3.82%
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Kingambit in Rain: 538-634 (133.1 - 156.9%) -- guaranteed OHKO
18
Wo-Chien
DarkGrass
DEFENSIVE COUNTER
127.358
55.7%
checker faints 5.93%
▾
252+ SpA Choice Specs Kyogre Ice Beam vs. 252 HP / 252+ SpD Wo-Chien: 210-248 (56.1 - 66.3%) -- guaranteed 2HKO
19
Dialga
SteelDragon
SOFT CHECK
112.399
54.6%
checker faints 6.42%
▾
252+ SpA Dialga Thunder vs. 252 HP / 252+ SpD Kyogre: 168-198 (41.5 - 49%) -- guaranteed 3HKO
20
Lunala
PsychicGhost
SOFT CHECK
1,900.686
53.1%
checker faints 1.97%
▾
252+ SpA Lunala Psyshock vs. 252 HP / 0 Def Kyogre: 163-193 (40.3 - 47.7%) -- guaranteed 3HKO
21
Koraidon
FightingDragon
SOFT CHECK
11,338.719
52.6%
checker faints 0.81%
▾
252+ Atk Orichalcum Pulse Koraidon Low Kick (120 BP) vs. 252 HP / 0 Def Kyogre: 322-381 (79.7 - 94.3%) -- guaranteed 2HKO
22
Eternatus
PoisonDragon
SOFT CHECK
2,277.313
51.5%
checker faints 1.80%
▾
+1 252+ SpA Eternatus Meteor Beam vs. 252 HP / 252+ SpD Kyogre: 133-157 (32.9 - 38.8%) -- 99.8% chance to 3HKO
23
331.745
51.1%
checker faints 4.67%
▾
Ditto vs. Kyogre: 0-0 (0 - 0%)
24
Calyrex-Ice
PsychicIce
SOFT CHECK
1,276.403
50.9%
checker faints 2.42%
▾
252+ Atk Calyrex-Ice Seed Bomb vs. 252 HP / 0 Def Kyogre: 250-296 (61.8 - 73.2%) -- guaranteed 2HKO
25
Amoonguss
GrassPoison
SOFT CHECK
194.374
50.1%
checker faints 6.06%
▾
252+ SpA Amoonguss Grass Knot (120 BP) vs. 252 HP / 252+ SpD Kyogre: 186-218 (46 - 53.9%) -- 46.5% chance to 2HKO
26
Regieleki
Electric
SOFT CHECK
72.301
49.8%
checker faints 8.14%
▾
0- Atk Transistor Regieleki Supercell Slam vs. 252 HP / 0 Def Kyogre: 276-326 (68.3 - 80.6%) -- guaranteed 2HKO
27
Mewtwo
Psychic
SOFT CHECK
60.95
49.3%
checker faints 8.87%
▾
252+ SpA Life Orb Mewtwo Psystrike vs. 252 HP / 0 Def Kyogre: 289-341 (71.5 - 84.4%) -- guaranteed 2HKO
28
Deoxys-Attack
Psychic
SOFT CHECK
271.625
49.1%
checker faints 5.21%
▾
252+ SpA Deoxys-Attack Psycho Boost vs. 252 HP / 252+ SpD Kyogre: 183-216 (45.2 - 53.4%) -- 34.8% chance to 2HKO
29
Arceus-Flying
Flying
SOFT CHECK
96.814
48.7%
checker faints 8.61%
▾
252+ SpA Sky Plate Arceus-Flying Judgment vs. 252 HP / 252+ SpD Kyogre: 117-138 (28.9 - 34.1%) -- 2.1% chance to 3HKO
30
5,684.184
47.3%
checker faints 1.14%
▾
252+ SpA Choice Specs Kyogre Thunder vs. 252 HP / 252+ SpD Kyogre: 248-294 (61.3 - 72.7%) -- guaranteed 2HKO
Ranked #2 with 48.83% usage. Sorted by reliability score.