Yamper counters

#0835

electricElite

Lobby CP

13,766

20,000

Timer

5:00

Attack

Defense

103

Difficulty

1.50

Pokebattler scale

Beating Yamper should take 2 trainers with level 40 counters. Caught CP 410-450.

Weak toground1.6x

Who to bring

IncludeMega Legendary Shadow

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

Weather

★ boosts a type it 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 Ground Mega — most top counters attack with Ground

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 Yamper counters are Shadow Landorus (Therian), Primal Groudon, Shadow Groudon, Shadow Excadrill, Landorus (Therian) & Shadow Mamoswine.

Suggested party of sixat most one Mega

S. Landorus (Therian)
Primal Groudon
S. Groudon
S. Excadrill
Landorus (Therian)
S. Mamoswine

3 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 %

1Shadow Landorus (Therian)ShadowLegendarypartyMud Shot / Sandsear Storm1.406:28
2Primal GroudonMegaLegendarypartyMud Shot / Precipice Blades1.436:34
3Mega Mewtwo YMegaLegendaryPsycho Cut / Future Sight+1.506:55
4Shadow GroudonShadowLegendarypartyMud Shot / Precipice Blades1.506:55
5Mega GarchompMegaMud Shot / Earth Power1.577:15
6Mega Mewtwo XMegaLegendaryPsycho Cut / Dynamic Punch+1.607:21
7Shadow ExcadrillShadowpartyMud-Slap / Scorching Sands1.657:37
8Landorus (Therian)LegendarypartyMud Shot / Sandsear Storm1.697:46
9Shadow MamoswineShadowpartyMud-Slap / High Horsepower1.707:49
10Shadow GarchompShadowMud Shot / Earth Power1.717:52

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.

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Raid tier — Elite 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

Raid alerts…

Top 15 Yamper 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.

Trainers2duo

#	Attacker	Moveset
1	Shadow Landorus (Therian)groundflyingjoint top pick	groundMud ShotgroundSandsear Storm	3,922	6:28	1.40	5.2	78.5%
2	Primal Groudongroundfirejoint top pick	groundMud ShotgroundPrecipice Blades	5,902	6:34	1.43	2.4	77.2%
3	Mega Mewtwo Ypsychic	psychicPsycho CutpsychicFuture Sight+	6,428	6:55	1.50	4.9	73.4%
4	Shadow Groudonground	groundMud ShotgroundPrecipice Blades	4,115	6:55	1.50	3.4	73.3%
5	Mega Garchompdragonground	groundMud ShotgroundEarth Power	5,424	7:15	1.57	2.0	70.0%
6	Mega Mewtwo Xpsychicfighting	psychicPsycho CutfightingDynamic Punch+	6,112	7:21	1.60	4.0	68.9%
7	Shadow Excadrillgroundsteel	groundMud-SlapgroundScorching Sands	3,244	7:37	1.65	5.0	66.6%
8	Landorus (Therian)groundflying	groundMud ShotgroundSandsear Storm	3,922	7:46	1.69	4.0	65.2%
9	Shadow Mamoswineiceground	groundMud-SlapgroundHigh Horsepower	3,328	7:49	1.70	4.6	64.9%
10	Shadow Garchompdragonground	groundMud ShotgroundEarth Power	3,962	7:52	1.71	3.0	64.4%
11	Shadow Landorus (Incarnate)groundflying	groundMud ShotgroundEarth Power	3,588	7:59	1.73	5.4	63.5%
12	Shadow Rhyperiorgroundrock	groundMud-SlapgroundEarthquake	3,733	8:03	1.75	3.5	63.0%
13	Shadow Regigigasnormal	normalHidden PowernormalCrush Grip	4,346	8:15	1.79	5.0	61.4%
14	Groudonground	groundMud ShotgroundPrecipice Blades	4,115	8:23	1.82	2.8	60.4%
15	Eternatuspoisondragon	poisonPoison JabdragonDynamax Cannon	4,429	8:37	1.87	3.0	58.8%

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 Yamper.

Estimator is how many trainers of this strength the fight needs. Power is the share of Yamper'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.

“Joint top pick”: 2 attackers inside 2.1% of each other — this simulator's own accuracy against pokebattler.com (median 1.6% per attacker), so any of them is the right answer.

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 % (2)	Overall	Power	Time to win	Faints	Estimator
Random (any moveset)showing	100%	211%	70.6%	7:11	4.3	1.56
Bite / Crunch	100%	189%	70.2%	7:13	4.8	1.57
Spark / Crunch	100%	197%	70.2%	7:13	4.5	1.57
Bite / Thunder	100%	231%	70.7%	7:10	3.9	1.56
Spark / Thunder	100%	251%	71.0%	7:09	3.5	1.55

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 2 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…

Yamper 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.

ground1.6x normal1x fighting1x poison1x rock1x bug1x ghost1x fire1x water1x grass1x psychic1x ice1x dragon1x dark1x fairy1x flying0.63x steel0.63x electric0.63x

Weak (1)
Neutral (14)
Resists (3)

It resists flying0.625xsteel0.625xelectric0.625x— bringing one of those is throwing damage away.

What Yamper throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
darkBite	6	+4	0.5s	0.30s
electricSparkSTAB	4	+6	0.5s	0.10s

Charged moves

Move	Power	Energy	Duration	Hits at
electricThunderSTAB	100	-100	2.5s	1.30s
darkCrunch	65	-33	3.0s	1.10s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	410	512
11/11/11	417	522
12/12/12	425	532
13/13/13	433	542
14/14/14	442	552
15/15/15hundo	450	562

Caught CP range 410 - 450, or 512 - 562 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.

Yamper 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

Elite: 20,000 HP, 5:00 timer, boss Attack 93 / Defense 103 (15/15/15 at tier CPM 0.985).

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 % (2)	CP	DPS	TDO
1	Shadow Landorus (Therian) top pickgroundflyingshadow Mud Shot / Sandsear Storm	Mud Shot / Sandsear Storm+9 more movesets	94%	78.5%	1.40	6:28	6.3	100%	3,922	53.1	2686
2	Primal Groudon top pickgroundfiremega Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	100%	77.2%	1.43	6:34	3.0	100%	5,902	51.1	5052
3	Mega Mewtwo Y psychicmega Psycho Cut / Future Sight+	Psycho Cut / Future Sight++26 more movesets	88%	73.4%	1.50	6:55	6.6	100%	6,428	49.6	2580
4	Shadow Groudon groundshadow Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	91%	73.3%	1.50	6:55	4.6	100%	4,115	48.9	3583
5	Mega Garchomp dragongroundmega Mud Shot / Earth Power	Mud Shot / Earth Power+13 more movesets	90%	70.0%	1.57	7:15	3.2	100%	5,424	46.3	5147
6	Mega Mewtwo X psychicfightingmega Psycho Cut / Dynamic Punch+	Psycho Cut / Dynamic Punch++26 more movesets	84%	68.9%	1.60	7:21	5.8	100%	6,112	46.1	2934
7	Shadow Excadrill groundsteelshadow Mud-Slap / Scorching Sands	Mud-Slap / Scorching Sands+14 more movesets	79%	66.6%	1.65	7:37	7.6	100%	3,244	44.7	2306
8	Landorus (Therian) groundflying Mud Shot / Sandsear Storm	Mud Shot / Sandsear Storm+9 more movesets	79%	65.2%	1.69	7:46	6.2	100%	3,922	43.9	2716
9	Shadow Mamoswine icegroundshadow Mud-Slap / High Horsepower	Mud-Slap / High Horsepower+11 more movesets	77%	64.9%	1.70	7:49	7.0	100%	3,328	43.5	2456
10	Shadow Garchomp dragongroundshadow Mud Shot / Earth Power	Mud Shot / Earth Power+13 more movesets	80%	64.4%	1.71	7:52	4.9	100%	3,962	43.0	3567
11	Shadow Landorus (Incarnate) groundflyingshadow Mud Shot / Earth Power	Mud Shot / Earth Power+7 more movesets	74%	63.5%	1.73	7:59	8.3	100%	3,588	42.7	2084
12	Shadow Rhyperior groundrockshadow Mud-Slap / Earthquake	Mud-Slap / Earthquake+15 more movesets	77%	63.0%	1.75	8:03	5.7	100%	3,733	42.1	2955
13	Shadow Regigigas normalshadow Hidden Power / Crush Grip	Hidden Power / Crush Grip+7 more movesets	72%	61.4%	1.79	8:15	8.1	100%	4,346	41.3	2184
14	Groudon ground Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	75%	60.4%	1.82	8:23	4.8	100%	4,115	40.2	3420
15	Eternatus poisondragon Poison Jab / Dynamax Cannon	Poison Jab / Dynamax Cannon+7 more movesets	72%	58.8%	1.87	8:37	5.4	100%	4,429	39.2	3062
16	Mega Delphox firepsychicmega Fire Spin / Mystical Fire+	Fire Spin / Mystical Fire++23 more movesets	66%	58.1%	1.89	8:43	10.6	100%	4,783	39.2	1679
17	Shadow Rhydon groundrockshadow Mud-Slap / Earthquake	Mud-Slap / Earthquake+9 more movesets	69%	57.6%	1.91	8:48	7.2	100%	3,179	38.7	2415
18	Mega Heracross bugfightingmega Fury Cutter / Earthquake	Fury Cutter / Earthquake+17 more movesets	68%	57.3%	1.92	8:50	7.0	100%	4,814	38.2	2719
19	Shadow Golurk groundghostshadow Mud-Slap / Earth Power	Mud-Slap / Earth Power+7 more movesets	64%	57.1%	1.93	8:53	12.1	100%	2,854	38.6	1675
20	Mega Swampert watergroundmega Mud Shot / Earthquake	Mud Shot / Earthquake+11 more movesets	69%	56.9%	1.93	8:54	5.7	100%	4,401	38.2	2889
21	Mega Lucario fightingsteelmega Force Palm / Aura Sphere	Force Palm / Aura Sphere+23 more movesets	65%	56.7%	1.94	8:56	10.7	100%	3,826	38.3	1980
22	Mega Greninja waterdarkmega Water Shuriken / Surf+	Water Shuriken / Surf++17 more movesets	63%	56.3%	1.96	9:00	12.2	100%	3,784	38.3	1878
23	Shadow Donphan groundshadow Mud-Slap / Earthquake	Mud-Slap / Earthquake+19 more movesets	66%	55.9%	1.97	9:04	7.9	100%	3,013	37.5	2222
24	Mega Rayquaza dragonflyingmega Dragon Tail / Breaking Swipe	Dragon Tail / Breaking Swipe+11 more movesets	65%	55.8%	1.97	9:05	9.1	100%	5,713	37.6	2064
25	Excadrill groundsteel Mud-Slap / Scorching Sands	Mud-Slap / Scorching Sands+14 more movesets	66%	55.7%	1.98	9:06	7.6	100%	3,244	37.3	2300
26	Mega Starmie waterpsychicmega Psywave / Liquidation+	Psywave / Liquidation++44 more movesets	61%	55.5%	1.99	9:08	14.6	100%	3,701	38.0	1277
27	Garchomp dragonground Mud Shot / Earth Power	Mud Shot / Earth Power+13 more movesets	68%	54.9%	2.01	9:14	4.7	100%	3,962	36.5	3800
28	Shadow Golem rockgroundshadow Mud-Slap / Earthquake	Mud-Slap / Earthquake+11 more movesets	64%	54.8%	2.01	9:15	8.2	100%	2,949	36.7	2157
29	Mamoswine iceground Mud-Slap / High Horsepower	Mud-Slap / High Horsepower+11 more movesets	65%	54.8%	2.01	9:15	7.2	100%	3,328	36.6	2406
30	Mega Dragonite dragonflyingmega Dragon Tail / Outrage+	Dragon Tail / Outrage++26 more movesets	65%	54.7%	2.01	9:16	7.4	100%	4,823	36.8	2390

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