Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Necrozma-Dusk-Mane
PsychicSteel
OFFENSIVE CHECK
52.941
96.2%
dies 3.40%
▾
252+ Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Grimmsnarl: 588-692 (149.2 - 175.6%) -- guaranteed OHKO
02
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
178.007
87.9%
dies 4.23%
▾
+1 252+ Atk Zacian-Crowned Play Rough vs. 252 HP / 0 Def Grimmsnarl: 764-902 (193.9 - 228.9%) -- guaranteed OHKO
03
Glimmora
RockPoison
OFFENSIVE CHECK
144.707
84.9%
dies 5.08%
▾
0- SpA Glimmora Dazzling Gleam vs. 252 HP / 252+ SpD Grimmsnarl: 112-134 (28.4 - 34%) -- 1.1% chance to 3HKO
04
Arceus-Fairy
Fairy
DEFENSIVE COUNTER
88.697
84.5%
dies 6.31%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Arceus-Fairy: 97-115 (21.8 - 25.9%) -- 3.2% chance to 4HKO
05
Kingambit
DarkSteel
DEFENSIVE COUNTER
48.642
84.4%
dies 7.07%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Kingambit: 97-115 (24 - 28.4%) -- 96.9% chance to 4HKO
06
Arceus-Ground
Ground
DEFENSIVE COUNTER
198.214
82.2%
dies 4.62%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Arceus-Ground: 97-115 (21.8 - 25.9%) -- 3.2% chance to 4HKO
07
Iron Treads
GroundSteel
DEFENSIVE COUNTER
152.848
81.9%
dies 5.33%
▾
252+ Atk Grimmsnarl Sucker Punch vs. 252 HP / 252+ Def Iron Treads: 76-90 (19.7 - 23.4%) -- possible 6HKO
08
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
89.277
80.2%
dies 7.27%
▾
252+ Atk Grimmsnarl Sucker Punch vs. 252 HP / 252+ Def Calyrex-Ice: 128-152 (31.6 - 37.6%) -- 87.1% chance to 3HKO
09
Kyurem-Black
DragonIce
OFFENSIVE CHECK
21.465
76.6%
dies 9.14%
▾
252+ Atk Kyurem-Black Iron Head vs. 252 HP / 0 Def Grimmsnarl: 334-394 (84.7 - 100%) -- 6.3% chance to OHKO
10
Arceus
Normal
DEFENSIVE COUNTER
246.237
72.7%
dies 4.86%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Arceus: 97-115 (21.8 - 25.9%) -- 3.2% chance to 4HKO
11
Ribombee
BugFairy
OFFENSIVE CHECK
68.76
71.6%
dies 7.64%
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Grimmsnarl: 236-282 (59.8 - 71.5%) -- guaranteed 2HKO
12
Kyogre
Water
DEFENSIVE COUNTER
136.49
66.0%
dies 7.01%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Kyogre: 118-139 (29.2 - 34.4%) -- 5.4% chance to 3HKO
13
Ho-Oh
FireFlying
DEFENSIVE COUNTER
320.126
64.9%
dies 4.61%
▾
252+ Atk Grimmsnarl Sucker Punch vs. 252 HP / 252+ Def Ho-Oh: 93-109 (22.3 - 26.2%) -- 9.1% chance to 4HKO
14
Eternatus
PoisonDragon
OFFENSIVE CHECK
81.123
63.3%
dies 9.20%
▾
252+ SpA Eternatus Sludge Bomb vs. 252 HP / 252+ SpD Grimmsnarl: 306-360 (77.6 - 91.3%) -- guaranteed 2HKO
15
Koraidon
FightingDragon
OFFENSIVE CHECK
548.41
61.6%
dies 3.58%
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Grimmsnarl in Sun: 419-493 (106.3 - 125.1%) -- guaranteed OHKO
16
Ting-Lu
DarkGround
DEFENSIVE COUNTER
220.832
61.5%
dies 5.63%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Ting-Lu: 188-224 (36.5 - 43.5%) -- 99.3% chance to 3HKO after Leftovers recovery
17
Gliscor
GroundFlying
DEFENSIVE COUNTER
118.523
59.2%
dies 7.69%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Gliscor: 94-112 (26.5 - 31.6%) -- guaranteed 4HKO
18
Incineroar
FireDark
SOFT CHECK
127.305
52.1%
dies 7.16%
▾
252+ Atk Incineroar Fake Out vs. 252 HP / 0 Def Grimmsnarl: 63-75 (15.9 - 19%) -- possible 6HKO
19
Flutter Mane
GhostFairy
SOFT CHECK
130.737
45.3%
dies 7.49%
▾
252+ SpA Flutter Mane Moonblast vs. 252 HP / 252+ SpD Grimmsnarl: 306-360 (77.6 - 91.3%) -- guaranteed 2HKO
20
Smeargle
Normal
SOFT CHECK
251.565
45.0%
dies 5.33%
▾
252+ Atk Smeargle Nuzzle vs. 252 HP / 0 Def Grimmsnarl: 14-17 (3.5 - 4.3%)
21
Miraidon
ElectricDragon
SOFT CHECK
573.025
44.4%
dies 3.57%
▾
252+ SpA Hadron Engine Miraidon Electro Drift vs. 252 HP / 252+ SpD Grimmsnarl in Electric Terrain: 277-327 (70.3 - 82.9%) -- guaranteed 2HKO
22
179.963
42.1%
dies 6.34%
▾
Ditto vs. Grimmsnarl: 0-0 (0 - 0%)
23
Grimmsnarl
DarkFairy
SOFT CHECK
80.667
42.0%
dies 9.47%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 0 Def Grimmsnarl: 434-512 (110.1 - 129.9%) -- guaranteed OHKO
24
Calyrex-Shadow
PsychicGhost
SOFT CHECK
891.613
41.6%
dies 2.84%
▾
252+ SpA Calyrex-Shadow Draining Kiss vs. 252 HP / 252+ SpD Grimmsnarl: 124-148 (31.4 - 37.5%) -- 88.4% chance to 3HKO
25
Deoxys-Speed
Psychic
SOFT CHECK
34.697
33.7%
dies 8.03%
▾
0- Atk Deoxys-Speed Knock Off (97.5 BP) vs. 252 HP / 0 Def Grimmsnarl: 21-25 (5.3 - 6.3%)
26
Hatterene
PsychicFairy
SOFT CHECK
107.449
24.4%
dies 7.12%
▾
252+ SpA Hatterene Misty Explosion vs. 252 HP / 252+ SpD Grimmsnarl: 320-380 (81.2 - 96.4%) -- guaranteed 2HKO
27
Alomomola
Water
SOFT CHECK
63.26
17.5%
dies 6.66%
▾
252+ Atk Alomomola Play Rough vs. 252 HP / 0 Def Grimmsnarl: 214-252 (54.3 - 63.9%) -- guaranteed 2HKO
Ranked #23 with 6.48% usage. Sorted by reliability score.