Ranked by reliability — blends KO rate with how often each Pokémon is matched up.
#
Checker
Encounters
Reliability
KO Rate
01
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
224.953
93.8%
dies 2.73%
▾
+1 252+ Atk Zacian-Crowned Play Rough vs. 252 HP / 0 Def Grimmsnarl: 764-902 (193.9 - 228.9%) -- guaranteed OHKO
02
Calyrex-Ice
PsychicIce
DEFENSIVE COUNTER
42.881
91.6%
dies 5.03%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Calyrex-Ice: 84-99 (20.7 - 24.5%) -- guaranteed 5HKO
03
Glimmora
RockPoison
OFFENSIVE CHECK
47.191
89.8%
dies 6.23%
▾
0- SpA Glimmora Sludge Bomb vs. 252 HP / 252+ SpD Grimmsnarl: 188-224 (47.7 - 56.8%) -- 89.5% chance to 2HKO
04
Kingambit
DarkSteel
DEFENSIVE COUNTER
90.666
85.4%
dies 6.18%
▾
252+ Atk Grimmsnarl Low Kick (100 BP) vs. 252 HP / 252+ Def Kingambit: 292-344 (72.2 - 85.1%) -- guaranteed 2HKO
05
Ting-Lu
DarkGround
DEFENSIVE COUNTER
104.458
81.6%
dies 6.53%
▾
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
06
Ribombee
BugFairy
OFFENSIVE CHECK
46.032
81.0%
dies 7.95%
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Grimmsnarl: 236-282 (59.8 - 71.5%) -- guaranteed 2HKO
07
Arceus-Ground
Ground
DEFENSIVE COUNTER
86.174
76.1%
dies 7.88%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Arceus-Ground: 97-115 (21.8 - 25.9%) -- 3.2% chance to 4HKO
08
Kyogre
Water
DEFENSIVE COUNTER
287.475
74.8%
dies 4.41%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Kyogre: 118-139 (29.2 - 34.4%) -- 5.4% chance to 3HKO
09
Arceus
Normal
DEFENSIVE COUNTER
117.509
73.6%
dies 6.98%
▾
252+ Atk Grimmsnarl Low Kick (120 BP) vs. 252 HP / 252+ Def Arceus: 172-204 (38.7 - 45.9%) -- guaranteed 3HKO
10
Arceus-Fairy
Fairy
DEFENSIVE COUNTER
72.787
69.3%
dies 7.60%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Arceus-Fairy: 97-115 (21.8 - 25.9%) -- 3.2% chance to 4HKO
11
Necrozma-Dusk-Mane
PsychicSteel
OFFENSIVE CHECK
218.147
69.0%
dies 5.40%
▾
0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Grimmsnarl: 408-482 (103.5 - 122.3%) -- guaranteed OHKO
12
Gliscor
GroundFlying
DEFENSIVE COUNTER
53.772
67.8%
dies 9.00%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Gliscor: 94-112 (26.5 - 31.6%) -- guaranteed 4HKO
13
Lunala
PsychicGhost
OFFENSIVE CHECK
218.779
66.9%
dies 5.49%
▾
252+ SpA Lunala Moonblast vs. 252 HP / 252+ SpD Grimmsnarl: 204-242 (51.7 - 61.4%) -- guaranteed 2HKO
14
Eternatus
PoisonDragon
OFFENSIVE CHECK
156.259
64.2%
dies 6.58%
▾
252+ SpA Eternatus Sludge Bomb vs. 252 HP / 252+ SpD Grimmsnarl: 306-360 (77.6 - 91.3%) -- guaranteed 2HKO
15
Groudon
Ground
DEFENSIVE COUNTER
26.867
62.6%
dies 9.34%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Groudon: 87-103 (21.5 - 25.4%) -- possible 5HKO
16
Arceus-Ghost
Ghost
DEFENSIVE COUNTER
45.415
60.4%
dies 10.16%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Arceus-Ghost: 97-115 (21.8 - 25.9%) -- 3.2% chance to 4HKO
17
Koraidon
FightingDragon
OFFENSIVE CHECK
434.633
57.7%
dies 4.10%
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Grimmsnarl in Sun: 419-493 (106.3 - 125.1%) -- guaranteed OHKO
18
Ho-Oh
FireFlying
DEFENSIVE COUNTER
229.023
56.5%
dies 5.58%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 252+ Def Ho-Oh: 59-69 (14.1 - 16.5%) -- possible 7HKO
19
Arceus-Water
Water
SOFT CHECK
31.285
47.0%
dies 8.92%
▾
252+ SpA Splash Plate Arceus-Water Judgment vs. 252 HP / 252+ SpD Grimmsnarl: 177-208 (44.9 - 52.7%) -- 25.8% chance to 2HKO
20
Grimmsnarl
DarkFairy
SOFT CHECK
26.924
40.8%
dies 9.47%
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 0 Def Grimmsnarl: 434-512 (110.1 - 129.9%) -- guaranteed OHKO
21
Landorus-Therian
GroundFlying
SOFT CHECK
80.303
37.8%
dies 9.25%
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Grimmsnarl: 277-327 (70.3 - 82.9%) -- guaranteed 2HKO
22
Hatterene
PsychicFairy
SOFT CHECK
100.551
28.4%
dies 7.63%
▾
252+ SpA Hatterene Dazzling Gleam vs. 252 HP / 252+ SpD Grimmsnarl: 258-306 (65.4 - 77.6%) -- guaranteed 2HKO
23
Deoxys-Speed
Psychic
SOFT CHECK
50.346
26.5%
dies 8.79%
▾
24
Giratina-Origin
GhostDragon
SOFT CHECK
71.402
24.8%
dies 8.62%
▾
252+ Atk Griseous Core Giratina-Origin Poltergeist vs. 252 HP / 0 Def Grimmsnarl: 159-187 (40.3 - 47.4%) -- guaranteed 3HKO
Ranked #30 with 4.44% usage. Sorted by reliability score.