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
Muk-Alola
PoisonDark
DEFENSIVE COUNTER
34.311
74.4%
checker faints 7.45%
▾
+1 252+ SpA Lunala Meteor Beam vs. 252 HP / 252+ SpD Muk-Alola: 162-191 (39.1 - 46.1%) -- guaranteed 3HKO
02
Kingambit
DarkSteel
DEFENSIVE COUNTER
524.496
72.4%
checker faints 3.27%
▾
252+ SpA Lunala Focus Blast vs. 252 HP / 252+ SpD Kingambit: 480-568 (118.8 - 140.5%) -- guaranteed OHKO
03
Chien-Pao
DarkIce
OFFENSIVE CHECK
81.21
70.7%
checker faints 7.04%
▾
252+ Atk Life Orb Sword of Ruin Chien-Pao Crunch vs. 252 HP / 0 Def Shadow Shield Lunala: 523-616 (109.4 - 128.8%) -- guaranteed OHKO
04
Wo-Chien
DarkGrass
DEFENSIVE COUNTER
91.12
62.2%
checker faints 8.67%
▾
252+ SpA Lunala Focus Blast vs. 252 HP / 252+ SpD Wo-Chien: 176-208 (47 - 55.6%) -- 74.2% chance to 2HKO
05
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
1,516.976
62.1%
checker faints 2.13%
▾
+1 252+ Atk Zacian-Crowned Crunch vs. 252 HP / 0 Def Shadow Shield Lunala: 352-416 (73.6 - 87%) -- guaranteed 2HKO
06
Arceus
Normal
DEFENSIVE COUNTER
1,751.596
59.3%
checker faints 1.99%
▾
252+ SpA Lunala Focus Blast vs. 252 HP / 252+ SpD Arceus: 192-226 (43.2 - 50.9%) -- 3.1% chance to 2HKO
07
Arceus-Ground
Ground
DEFENSIVE COUNTER
504.932
56.6%
checker faints 3.71%
▾
252+ SpA Lunala Psyshock vs. 252 HP / 0 Def Arceus-Ground: 127-151 (28.6 - 34%) -- 0.9% chance to 3HKO
08
Arceus-Ghost
Ghost
DEFENSIVE COUNTER
257.661
56.2%
checker faints 5.15%
▾
252+ SpA Lunala Moongeist Beam vs. 252 HP / 252+ SpD Arceus-Ghost: 236-282 (53.1 - 63.5%) -- guaranteed 2HKO
09
Ursaluna
GroundNormal
SOFT CHECK
199.334
54.0%
checker faints 5.85%
▾
252+ Atk Ursaluna Shadow Claw vs. 252 HP / 0 Def Shadow Shield Lunala: 196-232 (41 - 48.5%) -- guaranteed 3HKO
10
Calyrex-Ice
PsychicIce
SOFT CHECK
703.273
53.7%
checker faints 3.24%
▾
252+ Atk Calyrex-Ice Icicle Spear (3 hits) vs. 252 HP / 0 Def Shadow Shield Lunala: 150-180 (31.3 - 37.6%) -- 94.7% chance to 3HKO
11
Iron Treads
GroundSteel
SOFT CHECK
20.203
51.1%
checker faints 11.12%
12
Arceus-Flying
Flying
SOFT CHECK
68.275
50.4%
checker faints 10.47%
▾
252+ SpA Sky Plate Arceus-Flying Judgment vs. 252 HP / 252+ SpD Shadow Shield Lunala: 70-83 (14.6 - 17.3%) -- possible 6HKO
13
238.999
50.0%
checker faints 5.47%
▾
Ditto vs. Lunala: 0-0 (0 - 0%)
14
Lunala
PsychicGhost
SOFT CHECK
1,051.773
49.4%
checker faints 2.63%
▾
252+ SpA Lunala Moongeist Beam vs. 252 HP / 252+ SpD Shadow Shield Lunala: 258-306 (53.9 - 64%) -- guaranteed 2HKO
15
Deoxys-Attack
Psychic
SOFT CHECK
211.734
48.5%
checker faints 5.88%
▾
0- Atk Deoxys-Attack Knock Off (97.5 BP) vs. 252 HP / 0 Def Shadow Shield Lunala: 232-274 (48.5 - 57.3%) -- 93.4% chance to 2HKO
16
Arceus-Dark
Dark
SOFT CHECK
61.04
48.1%
checker faints 8.96%
▾
0- Atk Dread Plate Arceus-Dark Foul Play vs. 252 HP / 0 Def Shadow Shield Lunala: 270-320 (56.4 - 66.9%) -- guaranteed 2HKO
17
Ting-Lu
DarkGround
SOFT CHECK
423.485
47.8%
checker faints 4.12%
▾
252+ Atk Ting-Lu Payback (100 BP) vs. 252 HP / 0 Def Shadow Shield Lunala: 354-416 (74 - 87%) -- guaranteed 2HKO
18
Arceus-Fairy
Fairy
SOFT CHECK
680.432
47.6%
checker faints 3.28%
▾
252+ SpA Pixie Plate Arceus-Fairy Judgment vs. 252 HP / 252+ SpD Shadow Shield Lunala: 70-83 (14.6 - 17.3%) -- possible 6HKO
19
Flutter Mane
GhostFairy
SOFT CHECK
137.54
47.2%
checker faints 7.13%
▾
252+ SpA Choice Specs Flutter Mane Shadow Ball vs. 252 HP / 252+ SpD Shadow Shield Lunala: 306-360 (64 - 75.3%) -- guaranteed 2HKO
20
Tyranitar
RockDark
SOFT CHECK
256.858
47.0%
checker faints 5.20%
▾
252+ Atk Tyranitar Knock Off (97.5 BP) vs. 252 HP / 0 Def Shadow Shield Lunala: 392-464 (82 - 97%) -- 25% chance to OHKO after sandstorm damage
21
Giratina-Origin
GhostDragon
SOFT CHECK
453.195
46.8%
checker faints 4.05%
▾
252+ Atk Griseous Core Giratina-Origin Poltergeist vs. 252 HP / 0 Def Shadow Shield Lunala: 492-582 (102.9 - 121.7%) -- guaranteed OHKO
22
Giratina
GhostDragon
SOFT CHECK
21.475
45.9%
checker faints 10.75%
▾
252+ Atk Giratina Poltergeist vs. 252 HP / 0 Def Shadow Shield Lunala: 362-428 (75.7 - 89.5%) -- guaranteed 2HKO
23
1,900.686
44.7%
checker faints 1.97%
▾
252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Shadow Shield Lunala in Rain: 231-272 (48.3 - 56.9%) -- 91.8% chance to 2HKO
24
Palkia-Origin
WaterDragon
SOFT CHECK
24.342
42.4%
checker faints 10.02%
▾
252+ SpA Lustrous Globe Palkia-Origin Draco Meteor vs. 252 HP / 252+ SpD Shadow Shield Lunala: 106-126 (22.1 - 26.3%) -- 11.7% chance to 4HKO
25
Arceus-Electric
Electric
SOFT CHECK
206.484
41.8%
checker faints 5.92%
▾
252+ SpA Zap Plate Arceus-Electric Judgment vs. 252 HP / 252+ SpD Shadow Shield Lunala: 70-83 (14.6 - 17.3%) -- possible 6HKO
26
Arceus-Water
Water
SOFT CHECK
406.651
41.7%
checker faints 4.16%
▾
252+ SpA Splash Plate Arceus-Water Judgment vs. 252 HP / 252+ SpD Shadow Shield Lunala: 70-83 (14.6 - 17.3%) -- possible 6HKO
27
Koraidon
FightingDragon
SOFT CHECK
3,415.13
40.7%
checker faints 1.43%
▾
252+ Atk Orichalcum Pulse Koraidon Scale Shot (3 hits) vs. 252 HP / 0 Def Shadow Shield Lunala: 167-202 (34.9 - 42.2%) -- guaranteed 3HKO
28
Kyurem-Black
DragonIce
SOFT CHECK
108.399
39.4%
checker faints 7.64%
▾
252+ Atk Kyurem-Black Icicle Spear (3 hits) vs. 252 HP / 0 Def Shadow Shield Lunala: 152-182 (31.7 - 38%) -- 99.8% chance to 3HKO
29
Necrozma-Dusk-Mane
PsychicSteel
SOFT CHECK
1,280.684
38.5%
checker faints 2.32%
▾
0- Atk Necrozma-Dusk-Mane Knock Off (97.5 BP) vs. 252 HP / 0 Def Shadow Shield Lunala: 204-242 (42.6 - 50.6%) -- 2% chance to 2HKO
30
Rayquaza
DragonFlying
SOFT CHECK
152.774
38.4%
checker faints 6.53%
▾
252+ Atk Rayquaza Dragon Ascent vs. 252 HP / 0 Def Shadow Shield Lunala: 132-156 (27.6 - 32.6%) -- guaranteed 4HKO
Ranked #5 with 30.89% usage. Sorted by reliability score.