Mega Aggron counters

#0306

steelMega

Lobby CP

46,233

9,000

Timer

5:00

Attack

206

Defense

273

Difficulty

1.47

Pokebattler scale

Beating Mega Aggron should take 2 trainers with level 40 counters. Caught CP 1,636-1,714 (you catch Aggron).

Weak tofighting1.6xground1.6xfire1.6x

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 Fighting Mega — most top counters attack with Fighting

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+ also breaks two Super Mega shields at once; that part is not simulated. Sources: the full list, Behemoth Blade / Bash, Dynamic Punch+.

Best counters

Mega, Legendary, Shadow · level 40

The best Mega Aggron counters are Mega Mewtwo X, Shadow Landorus (Therian), Keldeo, Shadow Reshiram, Shadow Blaziken & Shadow Groudon.

Suggested party of sixat most one Mega

M. Mewtwo X
S. Landorus (Therian)
Keldeo
S. Reshiram
S. Blaziken
S. Groudon

7 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 Mewtwo XMegaLegendarypartyCounter / Dynamic Punch+1.205:35
2Mega LucarioMegaForce Palm / Aura Sphere1.446:41
3Mega DelphoxMegaFire Spin / Mystical Fire+1.456:45
4Mega BlazikenMegaCounter / Aura Sphere1.527:03
5Mega FalinksMegaCounter / Brick Break+1.587:22
6Primal GroudonMegaLegendaryMud Shot / Precipice Blades1.617:28
7Shadow Landorus (Therian)ShadowLegendarypartyMud Shot / Sandsear Storm1.667:42
8KeldeoLegendarypartyLow Kick / Secret Sword1.717:56
9Mega GalladeMegaLow Kick / Sacred Sword1.728:00
10Mega Mewtwo YMegaLegendaryCounter / Focus Blast1.728:00
11Shadow ReshiramShadowLegendarypartyFire Fang / Fusion Flare1.738:02
12Shadow BlazikenShadowpartyCounter / Aura Sphere1.748:04
13Shadow GroudonShadowLegendarypartyMud Shot / Precipice Blades1.858:37

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

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

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

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Raid tier — Easy Mega 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 countersAggron

Raid alerts…

Top 15 Mega Aggron 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	Mega Mewtwo Xpsychicfightingjoint top pick	fightingCounterfightingDynamic Punch+	6,112	5:35	1.20	5.5	90.7%
2	Mega Lucariofightingsteel	fightingForce PalmfightingAura Sphere	3,826	6:41	1.44	5.9	75.9%
3	Mega Delphoxfirepsychic	fireFire SpinfireMystical Fire+	4,783	6:45	1.45	5.8	75.2%
4	Mega Blazikenfirefighting	fightingCounterfightingAura Sphere	4,161	7:03	1.52	6.0	71.9%
5	Mega Falinksfighting	fightingCounterfightingBrick Break+	3,670	7:22	1.58	6.0	68.8%
6	Primal Groudongroundfire	groundMud ShotgroundPrecipice Blades	5,902	7:28	1.61	5.5	67.9%
7	Shadow Landorus (Therian)groundflying	groundMud ShotgroundSandsear Storm	3,922	7:42	1.66	6.0	65.9%
8	Keldeowaterfighting	fightingLow KickfightingSecret Sword	3,698	7:56	1.71	6.0	63.9%
9	Mega Galladepsychicfighting	fightingLow KickfightingSacred Sword	4,521	8:00	1.72	5.9	63.4%
10	Mega Mewtwo Ypsychic	fightingCounterfightingFocus Blast	6,428	8:00	1.72	5.7	63.3%
11	Shadow Reshiramdragonfire	fireFire FangfireFusion Flare	4,038	8:02	1.73	6.0	63.1%
12	Shadow Blazikenfirefighting	fightingCounterfightingAura Sphere	2,848	8:04	1.74	6.0	62.8%
13	Shadow Groudonground	groundMud ShotgroundPrecipice Blades	4,115	8:37	1.85	5.9	58.9%
14	Shadow Heatranfiresteel	fireFire SpinfireMagma Storm	3,754	8:40	1.86	6.0	58.5%
15	Shadow Conkeldurrfighting	fightingForce PalmfightingDynamic Punch	3,337	8:50	1.90	6.0	57.5%

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 Mega Aggron.

Estimator is how many trainers of this strength the fight needs. Power is the share of Mega Aggron'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 % (2)	Overall	Power	Time to win	Faints	Estimator
Random (any moveset)showing	100%	86%	66.1%	7:41	6.0	1.65
Dragon Tail / Meteor Beam	93%	72%	61.9%	8:12	6.0	1.76
Smack Down / Meteor Beam	97%	80%	62.8%	8:05	6.0	1.74
Iron Tail / Meteor Beam	100%	74%	63.5%	7:59	6.0	1.72
Metal Sound / Meteor Beam	100%	86%	65.0%	7:48	6.0	1.68
Dragon Tail / Stone Edge	100%	88%	65.3%	7:46	6.0	1.67
Metal Sound / Stone Edge	100%	101%	65.5%	7:44	5.8	1.67
Smack Down / Stone Edge	100%	96%	65.6%	7:44	5.9	1.66
Iron Tail / Stone Edge	100%	90%	66.1%	7:40	6.0	1.65
Metal Sound / Heavy Slam	100%	83%	66.4%	7:38	6.0	1.64
Dragon Tail / Rock Tomb	100%	100%	66.4%	7:38	5.9	1.64
Iron Tail / Heavy Slam	100%	80%	66.4%	7:38	6.0	1.64
Iron Tail / Thunder	100%	91%	66.9%	7:35	6.0	1.63
Dragon Tail / Thunder	100%	90%	66.9%	7:35	6.0	1.63
Dragon Tail / Heavy Slam	100%	79%	66.9%	7:35	6.0	1.63
Iron Tail / Rock Tomb	100%	101%	66.9%	7:35	6.0	1.63
Smack Down / Rock Tomb	100%	107%	67.0%	7:34	5.8	1.63
Metal Sound / Thunder	100%	103%	67.1%	7:34	5.8	1.63
Smack Down / Heavy Slam	100%	82%	67.3%	7:32	6.0	1.62
Smack Down / Thunder	100%	96%	67.4%	7:32	5.8	1.62
Metal Sound / Rock Tomb	100%	113%	67.5%	7:31	5.6	1.62
Smack Down / Brick Break	100%	113%	67.7%	7:30	5.7	1.61
Dragon Tail / Brick Break	100%	106%	67.9%	7:28	5.8	1.61
Iron Tail / Brick Break	100%	107%	68.2%	7:26	5.9	1.60
Metal Sound / Brick Break	100%	121%	68.6%	7:23	5.7	1.59

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…

Mega Aggron 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.

fighting1.6x ground1.6x fire1.6x ghost1x water1x electric1x dark1x normal0.63x flying0.63x rock0.63x bug0.63x steel0.63x grass0.63x psychic0.63x ice0.63x dragon0.63x fairy0.63x poison0.39x

Weak (3)
Neutral (4)
Resists (11)

It resists poison0.39xnormal0.625xflying0.625xrock0.625xbug0.625xsteel0.625xgrass0.625xpsychic0.625xice0.625xdragon0.625xfairy0.625x— bringing one of those is throwing damage away.

What Mega Aggron throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
steelIron TailSTAB	14	+6	1.0s	0.75s
dragonDragon Tail	14	+8	1.0s	0.75s
rockSmack Down	13	+7	1.0s	0.60s
steelMetal SoundSTAB	4	+6	0.5s	0.20s

Charged moves

Move	Power	Energy	Duration	Hits at
rockMeteor Beam	140	-100	2.0s	1.10s
rockStone Edge	105	-100	2.5s	0.90s
steelHeavy SlamSTAB	70	-50	2.0s	1.40s
electricThunder	100	-100	2.5s	1.30s
fightingBrick Break	40	-33	1.5s	0.70s
rockRock Tomb	65	-50	3.0s	2.05s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	1,636	2,045
11/11/11	1,651	2,064
12/12/12	1,667	2,084
13/13/13	1,682	2,103
14/14/14	1,698	2,123
15/15/15hundo	1,714	2,143

Caught CP range 1,636 - 1,714, or 2,045 - 2,143 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.

Mega Aggron 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

Mega: 9,000 HP, 5:00 timer, boss Attack 206 / Defense 273 (15/15/15 at tier CPM 0.79).

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.

#	PB #	Attacker	Moveset	Overall	Power	Est.Estimator	TimeTime to win	Faints	Win % (2)	CP	DPS	TDO
1	1	Mega Mewtwo X psychicfightingmega Counter / Dynamic Punch+	Counter / Dynamic Punch++26 more movesets	100%	90.7%	1.20	5:35	8.2	100%	6,112	27.6	1117
2	2	Mega Lucario fightingsteelmega Force Palm / Aura Sphere	Force Palm / Aura Sphere+23 more movesets	79%	75.9%	1.44	6:41	13.3	100%	3,826	23.3	735
3	6	Mega Delphox firepsychicmega Fire Spin / Mystical Fire+	Fire Spin / Mystical Fire++23 more movesets	78%	75.2%	1.45	6:45	14.9	100%	4,783	23.3	681
4	3	Mega Blaziken firefightingmega Counter / Aura Sphere	Counter / Aura Sphere+20 more movesets	73%	71.9%	1.52	7:03	17.1	100%	4,161	22.3	536
5	12	Mega Falinks fightingmega Counter / Brick Break+	Counter / Brick Break++7 more movesets	72%	68.8%	1.58	7:22	14.3	100%	3,670	21.2	660
6	4	Primal Groudon groundfiremega Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	73%	67.9%	1.61	7:28	10.2	100%	5,902	20.6	900
7	24	Shadow Landorus (Therian) groundflyingshadow Mud Shot / Sandsear Storm	Mud Shot / Sandsear Storm+9 more movesets	66%	65.9%	1.66	7:42	19.0	100%	3,922	20.5	510
8	5	Keldeo waterfighting Low Kick / Secret Sword	Low Kick / Secret Sword+11 more movesets	66%	63.9%	1.71	7:56	14.3	100%	3,698	19.6	650
9	7	Mega Gallade psychicfightingmega Low Kick / Sacred Sword	Low Kick / Sacred Sword+19 more movesets	65%	63.4%	1.72	7:60	15.3	100%	4,521	19.4	623
10	9	Mega Mewtwo Y psychicmega Counter / Focus Blast	Counter / Focus Blast+26 more movesets	66%	63.3%	1.72	8:00	14.0	100%	6,428	19.5	688
11	23	Shadow Reshiram dragonfireshadow Fire Fang / Fusion Flare	Fire Fang / Fusion Flare+9 more movesets	63%	63.1%	1.73	8:02	22.4	98%	4,038	19.8	467
12	28	Shadow Blaziken firefightingshadow Counter / Aura Sphere	Counter / Aura Sphere+20 more movesets	61%	62.8%	1.74	8:04	26.2	100%	2,848	19.9	361
13	26	Shadow Groudon groundshadow Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	61%	58.9%	1.85	8:37	15.7	100%	4,115	18.1	610
14	—	Shadow Heatran firesteelshadow Fire Spin / Magma Storm	Fire Spin / Magma Storm+11 more movesets	59%	58.5%	1.86	8:40	18.5	100%	3,754	18.0	510
15	—	Shadow Conkeldurr fightingshadow Force Palm / Dynamic Punch	Force Palm / Dynamic Punch+11 more movesets	57%	57.5%	1.90	8:50	21.2	100%	3,337	17.9	448
16	—	Shadow Gallade psychicfightingshadow Low Kick / Sacred Sword	Low Kick / Sacred Sword+19 more movesets	57%	57.4%	1.90	8:50	22.6	100%	3,093	17.9	429
17	11	Mega Garchomp dragongroundmega Mud Shot / Earth Power	Mud Shot / Earth Power+13 more movesets	60%	57.3%	1.90	8:51	12.8	100%	5,424	17.4	764
18	22	Mega Charizard Y fireflyingmega Fire Spin / Blast Burn	Fire Spin / Blast Burn+29 more movesets	55%	56.8%	1.92	8:55	29.8	72%	4,455	18.2	409
19	16	Lucario fightingsteel Force Palm / Aura Sphere	Force Palm / Aura Sphere+23 more movesets	57%	56.6%	1.93	8:57	20.1	100%	2,703	17.5	497
20	18	Terrakion rockfighting Double Kick / Sacred Sword	Double Kick / Sacred Sword+11 more movesets	56%	55.8%	1.96	9:06	21.2	100%	3,698	17.3	478
21	21	Mega Heracross bugfightingmega Counter / Close Combat	Counter / Close Combat+17 more movesets	56%	55.6%	1.96	9:07	19.1	100%	4,814	17.1	511
22	—	Shadow Emboar firefightingshadow Low Kick / Blast Burn	Low Kick / Blast Burn+9 more movesets	54%	55.4%	1.97	9:10	26.0	88%	2,982	17.4	364
23	24	Landorus (Therian) groundflying Mud Shot / Sandsear Storm	Mud Shot / Sandsear Storm+9 more movesets	55%	55.3%	1.97	9:11	19.7	98%	3,922	17.1	495
24	—	Shadow Excadrill groundsteelshadow Mud-Slap / Scorching Sands	Mud-Slap / Scorching Sands+14 more movesets	56%	55.2%	1.97	9:11	18.3	100%	3,244	17.0	542
25	—	Shadow Raikou electricshadow Thunder Shock / Aura Sphere	Thunder Shock / Aura Sphere+9 more movesets	55%	55.1%	1.98	9:12	20.7	100%	3,452	17.1	451
26	23	Reshiram dragonfire Fire Fang / Fusion Flare	Fire Fang / Fusion Flare+9 more movesets	54%	54.8%	1.99	9:16	21.6	94%	4,038	17.0	466
27	28	Blaziken firefighting Counter / Aura Sphere	Counter / Aura Sphere+20 more movesets	52%	53.5%	2.04	9:28	25.7	98%	2,848	16.7	362
28	29	Mega Charizard X firedragonmega Fire Spin / Blast Burn	Fire Spin / Blast Burn+29 more movesets	52%	53.2%	2.05	9:32	23.5	84%	3,850	16.6	426
29	30	Blacephalon fireghost Astonish / Mind Blown	Astonish / Mind Blown+7 more movesets	50%	53.1%	2.05	9:33	35.0	66%	3,297	17.2	324
30	—	Shadow Darmanitan (Standard) fireshadow Fire Fang / Overheat	Fire Fang / Overheat+11 more movesets	45%	48.3%	2.26	10:29	40.6	60%	3,105	15.9	259

PB # is pokebattler.com's own rank for the same attacker at these settings (snapshot 2026-09-10). 23 of our 30 rows are on its 30-row list, 8 in both top tens. Sort by Pokebattler's own rank

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