Grubbin counters

#0736

bugTier 3

Lobby CP

7,800

3,600

Timer

3:00

Attack

Defense

Difficulty

0.26

Pokebattler scale

Beating Grubbin should take 1 trainer with level 40 counters. Caught CP 518-562.

Weak toflying1.6xrock1.6xfire1.6x

Who to bring

IncludeMega Legendary Shadow

Improve your raidweather · friendship · Mega in the lobby · Party Power · Adventure EffectsShow ▾

Weather

★ boosts a type this boss is weak to

No boost Sunny or clear ★Rainy Partly cloudy ★Cloudy Windy ★Snow Fog

Friendship

every trainer in the lobby who is your friend

None Good friend (+3%)Great friend (+5%)Ultra friend (+7%)Best friend (+10%)

Mega in the lobby

a Mega boosts every trainer's attacks: 1.3x of its own type, 1.1x of others

Try a Fire Mega — most top counters attack with Fire

Party Power

Party Play: the charged move after a full meter does 2x

Off 2 trainers 3 trainers 4 trainers

Adventure Effects

only these three change a raid

Behemoth Blade (+10% attack)Behemoth Bash (+10% defense)Dynamic Punch+ (+15% attack vs Mega)

Of the game's eleven Adventure Effects only Behemoth Blade (Crowned Sword Zacian), Behemoth Bash (Crowned Shield Zamazenta) and Dynamic Punch+ (Mega Mewtwo X) change a raid; Roar of Time, Spacial Rend, Freeze Shock, Ice Burn, Sunsteel Strike, Moongeist Beam, Future Sight+ and Dynamax Cannon act outside raids. Dynamic Punch+ only counts against a Mega boss, so it changes nothing here. Sources: the full list, Behemoth Blade / Bash, Dynamic Punch+.

Best counters

Mega, Legendary, Shadow · level 40

The best Grubbin counters are Mega Delphox, Shadow Salamence, Blacephalon, Shadow Reshiram, Shadow Moltres & Rayquaza.

Suggested party of sixat most one Mega

M. Delphox
S. Salamence
Blacephalon
S. Reshiram
S. Moltres
Rayquaza

5 more Megas ranked inside the top six — a party can hold only one Mega, so the best one stays and the next non-Mega takes the slot.

Ranked by Estimator (trainers needed); small print: time to winOrder byEstimatorOverall %

1Mega DelphoxMegapartyFire Spin / Mystical Fire+0.230:40
2Mega RayquazaMegaLegendaryAir Slash / Dragon Ascent0.240:42
3Mega StaraptorMegaWing Attack / Brave Bird+0.270:47
4Shadow SalamenceShadowpartyFire Fang / Fly0.270:48
5BlacephalonLegendarypartyIncinerate / Mind Blown0.270:48
6Shadow ReshiramShadowLegendarypartyFire Fang / Fusion Flare0.280:49
7Shadow MoltresShadowLegendarypartyFire Spin / Fly0.280:49
8Mega BlazikenMegaFire Spin / Blast Burn0.280:50
9Mega Charizard YMegaFire Spin / Blast Burn0.290:50
10Mega SkarmoryMegaAir Slash / Drill Peck+0.290:50
11RayquazaLegendarypartyAir Slash / Dragon Ascent0.300:52

More orders under All settings (Sort by). The top 15 in detail.

Build and order a party of six →Plan your raid lobby →

Best from your Pokebox

Pokebox

The Pokebox saved in this browser · each at its own level, IVs and moves.

Search bosses

Type a name, then Enter or click a result

Raid tier — Group Raid

Super Mega Legendary Super Mega Primal Mega Legendary Mega Elite Shadow Tier 5 Tier 5 Shadow Tier 3 Tier 3 Shadow Tier 1 Tier 1 Tier 4 Tier 2

Related countersShadow Grubbin

Raid alerts…

Top 15 Grubbin counters in detail

Click a row for damage per move, breakpoints and the energy cycle. Click a column to sort. All 30 ranked attackers, with every column, are under All settings.

Trainers1soloable

#	Attacker	Moveset
1	Mega Delphoxfirepsychicjoint top pick	fireFire SpinfireMystical Fire+	4,783	0:40	0.23	0.1	585.4%
2	Mega Rayquazadragonflying	flyingAir SlashflyingDragon Ascent	5,713	0:42	0.24	0.0	563.5%
3	Mega Staraptorfightingflying	flyingWing AttackflyingBrave Bird+	3,979	0:47	0.27	0.0	499.4%
4	Shadow Salamencedragonflying	fireFire FangflyingFly	3,749	0:48	0.27	0.1	493.1%
5	Blacephalonfireghost	fireIncineratefireMind Blown	3,297	0:48	0.27	0.4	491.8%
6	Shadow Reshiramdragonfire	fireFire FangfireFusion Flare	4,038	0:49	0.28	0.0	483.3%
7	Shadow Moltresfireflying	fireFire SpinflyingFly	3,465	0:49	0.28	0.1	477.3%
8	Mega Blazikenfirefighting	fireFire SpinfireBlast Burn	4,161	0:50	0.28	0.0	471.0%
9	Mega Charizard Yfireflying	fireFire SpinfireBlast Burn	4,455	0:50	0.29	0.0	467.9%
10	Mega Skarmorysteelflying	flyingAir SlashflyingDrill Peck+	3,741	0:50	0.29	0.0	464.8%
11	Rayquazadragonflying	flyingAir SlashflyingDragon Ascent	3,835	0:52	0.30	0.0	452.7%
12	Shadow Staraptornormalflying	flyingGustflyingFly	2,825	0:53	0.30	0.4	443.9%
13	Shadow Toucannonnormalflying	flyingPeckflyingBeak Blast	2,689	0:53	0.30	0.5	443.2%
14	Shadow Rampardosrock	rockSmack DownrockRock Slide	3,298	0:53	0.30	0.7	441.2%
15	Shadow Heatranfiresteel	fireFire SpinfireMagma Storm	3,754	0:54	0.31	0.0	437.7%

Ordered by Estimator alone, fewest trainers needed first. . The place badge names each row's Overall place on hover.

Times are one trainer with six copies of that attacker, level 40 at 15/15/15, no weather, no friendship, no dodging, Shadow / Mega / Legendary attackers hidden — the same defaults pokebattler.com's own counter pages open with. Open the full counter tool to change any of them. "Details" opens the per-move damage, breakpoints and energy cycle against Grubbin.

Estimator is how many trainers of this strength the fight needs. Power is the share of Grubbin's HP that six of that attacker remove inside one raid timer, so over 100% means they finish it with time to spare. Faints is how many of the six go down inside that timer.

Hardest movesets to raid against

The same boss is a different fight depending on what it knows. Each row re-simulates the top 6 counters above against one specific moveset; the list is ordered hardest first, and clicking a row filters the whole page to that moveset — the ranking, the estimator and the share link all follow.

Boss moveset	Win % (1)	Overall	Power	Time to win	Faints	Estimator
Random (any moveset)showing	100%	503%	495.4%	0:47	0.1	0.27
Bug Bite / X-Scissor	100%	566%	493.3%	0:48	0.0	0.27
Spark / Vice Grip	100%	582%	493.5%	0:48	0.0	0.27
Bug Bite / Vice Grip	100%	589%	493.7%	0:48	0.0	0.27
Spark / X-Scissor	100%	555%	494.3%	0:47	0.0	0.27
Bug Bite / Crunch	100%	421%	495.7%	0:47	0.3	0.27
Spark / Crunch	100%	419%	496.1%	0:47	0.3	0.27

Measured over the top 6 attackers on the list above rather than by re-ranking the whole roster once per moveset — the ordering is what the table is for, and a full re-rank per moveset would cost ten times the page's whole simulation budget. Win % is the share of runs 1 trainers of those attackers finish inside the raid timer. Overall is Pokebattler's published blend on its own absolute scale (higher is easier), not a percentage of the best row the way the ranked table's Overall column is — which is why an easy boss reads well above 100% here.

Simulating each boss moveset…

Grubbin weaknesses and resistances

Every one of the 18 attacking types against this boss's typing. GO multipliers: 1.6x super effective, 2.56x doubly, 0.625x resisted, 0.39x doubly resisted.

flying1.6x rock1.6x fire1.6x normal1x poison1x bug1x ghost1x steel1x water1x electric1x psychic1x ice1x dragon1x dark1x fairy1x fighting0.63x ground0.63x grass0.63x

Weak (3)
Neutral (12)
Resists (3)

It resists fighting0.625xground0.625xgrass0.625x— bringing one of those is throwing damage away.

What Grubbin throws at you

Its standard movepool, with the damage window a dodge has to beat.

Fast moves

Move	Power	Energy	Duration	Hits at
bugBug BiteSTAB	5	+6	0.5s	0.25s
electricSpark	4	+6	0.5s	0.10s

Charged moves

Move	Power	Energy	Duration	Hits at
bugX-ScissorSTAB	45	-33	1.5s	1.10s
darkCrunch	65	-33	3.0s	1.10s
normalVice Grip	35	-33	2.0s	1.20s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	518	647
11/11/11	526	658
12/12/12	535	669
13/13/13	544	680
14/14/14	553	691
15/15/15hundo	562	703

Caught CP range 518 - 562, or 647 - 703 when the weather boosts it.

A raid encounter is level 20 (level 25 weather boosted) and cannot roll an IV below 10/10/10. Anything outside the first range is not this raid's reward.

When it is in raids

From the raid schedule, refreshed daily.

Grubbin is not on the raid schedule right now. The simulation above is still exact for the tier chosen — any boss can be simulated, current or not.

All settings

Tier 3: 3,600 HP, 3:00 timer, boss Attack 94 / Defense 73 (15/15/15 at tier CPM 0.73).

Raid bossAttacker levelAttacker IVsWeatherFriendshipDodgingTrainers in the lobbyMega in the lobbyParty Play trainersBoss fast moveBoss charged moveSort by

Attackers allowed

ShadowMega and PrimalLegendary, Mythical, Ultra BeastLegacy and Elite TM moves

Share these exact settings

Every column, and pokebattler.com's own rank

On a phone the list shows estimator, time to win and faints. Overall, Power, win chance, CP, DPS and TDO appear on a wider screen.

#	Attacker	Moveset	Overall	Power	Est.Estimator	TimeTime to win	Faints	Win % (1)	CP	DPS	TDO
1	Mega Delphox firepsychicmega Fire Spin / Mystical Fire+	Fire Spin / Mystical Fire++23 more movesets	98%	585.4%	0.23	0:40	0.1	100%	4,783	90.3	3512
2	Mega Rayquaza dragonflyingmega Air Slash / Dragon Ascent	Air Slash / Dragon Ascent+11 more movesets	100%	563.5%	0.24	0:42	0.0	100%	5,713	90.9	3791
3	Mega Staraptor fightingflyingmega Wing Attack / Brave Bird+	Wing Attack / Brave Bird++19 more movesets	89%	499.4%	0.27	0:47	0.0	100%	3,979	77.0	3617
4	Shadow Salamence dragonflyingshadow Fire Fang / Fly	Fire Fang / Fly+20 more movesets	80%	493.1%	0.27	0:48	0.1	100%	3,749	76.3	3413
5	Blacephalon fireghost Incinerate / Mind Blown	Incinerate / Mind Blown+7 more movesets	77%	491.8%	0.27	0:48	0.4	100%	3,297	77.5	3055
6	Shadow Reshiram dragonfireshadow Fire Fang / Fusion Flare	Fire Fang / Fusion Flare+9 more movesets	81%	483.3%	0.28	0:49	0.0	100%	4,038	81.7	3967
7	Shadow Moltres fireflyingshadow Fire Spin / Fly	Fire Spin / Fly+11 more movesets	79%	477.3%	0.28	0:49	0.1	100%	3,465	74.0	3528
8	Mega Blaziken firefightingmega Fire Spin / Blast Burn	Fire Spin / Blast Burn+20 more movesets	81%	471.0%	0.28	0:50	0.0	100%	4,161	78.4	3908
9	Mega Charizard Y fireflyingmega Fire Spin / Blast Burn	Fire Spin / Blast Burn+29 more movesets	80%	467.9%	0.29	0:50	0.0	100%	4,455	76.6	3843
10	Mega Skarmory steelflyingmega Air Slash / Drill Peck+	Air Slash / Drill Peck++9 more movesets	79%	464.8%	0.29	0:50	0.0	100%	3,741	71.3	3601
11	Rayquaza dragonflying Air Slash / Dragon Ascent	Air Slash / Dragon Ascent+11 more movesets	75%	452.7%	0.30	0:52	0.0	100%	3,835	73.1	3748
12	Shadow Staraptor normalflyingshadow Gust / Fly	Gust / Fly+15 more movesets	68%	443.9%	0.30	0:53	0.4	100%	2,825	69.1	2919
13	Shadow Toucannon normalflyingshadow Peck / Beak Blast	Peck / Beak Blast+11 more movesets	68%	443.2%	0.30	0:53	0.5	100%	2,689	70.2	2765
14	Shadow Rampardos rockshadow Smack Down / Rock Slide	Smack Down / Rock Slide+5 more movesets	66%	441.2%	0.30	0:53	0.6	100%	3,298	69.2	2458
15	Shadow Heatran firesteelshadow Fire Spin / Magma Storm	Fire Spin / Magma Storm+11 more movesets	75%	437.7%	0.31	0:54	0.0	100%	3,754	67.9	3606
16	Shadow Chandelure ghostfireshadow Fire Spin / Overheat	Fire Spin / Overheat+19 more movesets	68%	436.3%	0.31	0:54	0.3	100%	3,268	68.8	3050
17	Shadow Blaziken firefightingshadow Fire Spin / Blast Burn	Fire Spin / Blast Burn+20 more movesets	69%	434.3%	0.31	0:54	0.3	100%	2,848	68.1	3092
18	Mega Salamence dragonflyingmega Fire Fang / Fly	Fire Fang / Fly+20 more movesets	76%	433.2%	0.31	0:54	0.0	100%	5,031	67.8	3674
19	Mega Mewtwo Y psychicmega Confusion / Future Sight+	Confusion / Future Sight++26 more movesets	69%	432.1%	0.31	0:54	0.3	100%	6,428	66.9	2974
20	Shadow Tornadus (Therian) flyingshadow Gust / Bleakwind Storm	Gust / Bleakwind Storm+9 more movesets	67%	427.2%	0.31	0:55	0.2	100%	3,215	66.5	3206
21	Shadow Darmanitan (Standard) fireshadow Fire Fang / Overheat	Fire Fang / Overheat+11 more movesets	65%	423.3%	0.32	0:55	0.5	100%	3,105	69.8	2834
22	Shadow Emboar firefightingshadow Ember / Blast Burn	Ember / Blast Burn+9 more movesets	68%	422.6%	0.32	0:56	0.0	100%	2,982	65.1	3581
23	Mega Diancie rockfairymega Rock Throw / Rock Slide	Rock Throw / Rock Slide+5 more movesets	71%	421.9%	0.32	0:56	0.0	100%	4,346	67.2	3737
24	Shadow Galarian Articuno psychicflyingshadow Psycho Cut / Fly	Psycho Cut / Fly+7 more movesets	64%	421.5%	0.32	0:56	0.5	100%	3,590	66.9	2737
25	Shadow Gigalith rockshadow Lock-On / Meteor Beam	Lock-On / Meteor Beam+14 more movesets	67%	420.4%	0.32	0:56	0.3	100%	3,228	66.1	3092
26	Reshiram dragonfire Fire Fang / Fusion Flare	Fire Fang / Fusion Flare+9 more movesets	70%	418.9%	0.32	0:56	0.0	100%	4,038	64.4	3572
27	Shadow Entei fireshadow Fire Spin / Overheat	Fire Spin / Overheat+11 more movesets	67%	414.1%	0.32	0:57	0.1	100%	3,473	64.5	3393
28	Shadow Ho-Oh fireflyingshadow Incinerate / Sacred Fire++	Incinerate / Sacred Fire+++27 more movesets	70%	410.3%	0.33	0:57	0.0	100%	3,863	68.1	3894
29	Shadow Rhyperior groundrockshadow Smack Down / Rock Wrecker	Smack Down / Rock Wrecker+15 more movesets	66%	406.9%	0.33	0:58	0.1	100%	3,733	63.2	3500
30	Shadow Infernape firefightingshadow Fire Spin / Blast Burn	Fire Spin / Blast Burn+7 more movesets	63%	399.9%	0.33	0:59	0.3	100%	2,683	64.6	3174

How accurate is this? Same top pick as pokebattler.com on 26 of 27 lists checked, 90% of its top tens shared; weakest on Mewtwo's default list (7 of 10).

Ranking. Our full ranking against the page pokebattler.com serves for the same boss and settings, on 27 boss and filter combinations read live (2026-10-04): 242 of 270 top-ten places shared, the same #1 on 26. On the six fixed reference bosses (read 2026-10-03): 85% top-ten overlap with its default filters, 83% with Shadow, Mega and Legendary on. A close top three is shown as a tie because the order inside it is below what we can measure.

Time to win. Graded with Pokebattler's own movesets against every boss moveset, average per boss: Tier 1 and 3 +0.1% to +1.2%; Tier 5 −2.9% to +1.3%; Mega −1.1% to +2.6%; Shadow Tier 5 −1.8% to +0.3%. One attacker can be off by more: median 1.6%, worst 15%, RMS per boss moveset 2.05%.

Known weak spots.

Mewtwo (Tier 5, default filters) shares 7 of Pokebattler's top 10: Absol, Incineroar and Salamence sit just outside ours, Polteageist, Cursola and Hisuian Typhlosion just inside.
Groudon (Tier 5, default filters) shares 7 of 10; its Grass and Water counters run 2-6% fast here.
Tier 5 times run about 2-3% fast for attackers that faint often, and 2-3% slow on Mega Charizard Y and Mega Beedrill, whose counters resist the boss.
Tier 1 lists are the least checked: Combee (Tier 1) shares only 3 of Pokebattler's top 10, with Gigalith first here where Pokebattler puts Rhyperior.

This boss on pokebattler.com. Boss-by-boss accuracy report.

Ranked 30 attackers in 0.2 s (50 Monte Carlo runs each, seed 1). Same boss on pokebattler.com. The same ranking as JSON: /api/raids/rank.