Not released in Pokemon GONo trainer can own this one yet.

Not obtainable in Pokemon GO as of 2026-10-03: PvPoke flags it released:false and onemorecatch.site lists the species as unavailable. It is left out of default counter lists, boss pickers, tools and the Pokebox; the numbers on this page are what the Game Master gives it.

List checked 2026-10-03. Source: PvPoke gamemaster released:false flags (github.com/pvpoke/pvpoke, snapshot 2026-10-03 03:11:52) cross-checked with onemorecatch.site's unavailable list (updated 2026-10-02) and theclick.gg's Mega list (2026-09-16); PvP-only exclusions (Ditto, Shedinja, Spewpa, Cosmog, Cosmoem) and the stale Mega Camerupt flag corrected by hand.

Iron Boulder counters

#1022Not released in Pokemon GO

rock psychicTier 5

Lobby CP

42,950

15,000

Timer

5:00

Attack

191

Defense

165

Difficulty

1.52

Pokebattler scale

Beating Iron Boulder should take 2 trainers with level 40 counters. Caught CP 1,708-1,787.

Weak toground1.6xbug1.6xghost1.6xsteel1.6xwater1.6xgrass1.6xdark1.6x

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 Steel Mega — most top counters attack with Steel

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 Iron Boulder counters are Zacian (Crowned Sword), Mega Beedrill, Necrozma (Dusk Mane), Zamazenta (Crowned Shield), Necrozma (Dawn Wings) & Shadow Landorus (Therian).

Suggested party of sixat most one Mega

Zacian (Crowned Sword)
M. Beedrill
Necrozma (Dusk Mane)
Zamazenta (Crowned Shield)
Necrozma (Dawn Wings)
S. Landorus (Therian)

6 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 %

1Zacian (Crowned Sword)LegendarypartyMetal Claw / Behemoth Blade1.446:37
2Mega BeedrillMegapartyBug Bite / Fell Stinger+1.486:47
3Necrozma (Dusk Mane)LegendarypartyMetal Claw / Sunsteel Strike1.486:48
4Mega GreninjaMegaWater Shuriken / Surf+1.496:51
5Zamazenta (Crowned Shield)LegendarypartyMetal Claw / Behemoth Bash1.516:57
6Mega HoundoomMegaSnarl / Dark Pulse+1.537:03
7Necrozma (Dawn Wings)LegendarypartyShadow Claw / Moongeist Beam1.607:21
8Mega StarmieMegaPsywave / Liquidation+1.617:24
9Mega GengarMegaLick / Shadow Ball1.627:27
10Mega SceptileMegaFury Cutter / Frenzy Plant1.647:34
12Shadow Landorus (Therian)ShadowLegendarypartyMud Shot / Sandsear Storm1.687:43

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 — Legendary 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 Iron Boulder

Raid alerts…

Top 15 Iron Boulder 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	Zacian (Crowned Sword)fairysteeljoint top pick	steelMetal ClawsteelBehemoth Blade	4,979	6:37	1.44	2.4	76.5%
2	Mega Beedrillbugpoison	bugBug BitebugFell Stinger+	3,383	6:47	1.48	5.9	74.6%
3	Necrozma (Dusk Mane)psychicsteel	steelMetal ClawsteelSunsteel Strike	4,099	6:48	1.48	2.6	74.5%
4	Mega Greninjawaterdark	waterWater ShurikenwaterSurf+	3,784	6:51	1.49	5.3	74.0%
5	Zamazenta (Crowned Shield)fightingsteel	steelMetal ClawsteelBehemoth Bash	4,172	6:57	1.51	2.0	73.0%
6	Mega Houndoomdarkfire	darkSnarldarkDark Pulse+	3,842	7:03	1.53	4.9	72.0%
7	Necrozma (Dawn Wings)psychicghost	ghostShadow ClawghostMoongeist Beam	4,099	7:21	1.60	1.7	69.0%
8	Mega Starmiewaterpsychic	psychicPsywavewaterLiquidation+	3,701	7:24	1.61	4.8	68.4%
9	Mega Gengarghostpoison	ghostLickghostShadow Ball	4,336	7:27	1.62	2.1	68.1%
10	Mega Sceptilegrassdragon	bugFury CuttergrassFrenzy Plant	4,056	7:34	1.64	5.3	67.0%
11	Mega Chesnaughtgrassfighting	grassVine WhipgrassSeed Bomb+	4,093	7:40	1.67	3.1	66.1%
12	Shadow Landorus (Therian)groundflying	groundMud ShotgroundSandsear Storm	3,922	7:43	1.68	5.4	65.6%
13	Primal Kyogrewater	waterWaterfallwaterOrigin Pulse	5,902	7:46	1.69	3.0	65.3%
14	Shadow Metagrosssteelpsychic	bugFury CuttersteelMeteor Mash	3,791	7:48	1.70	3.2	64.9%
15	Primal Groudongroundfire	groundMud ShotgroundPrecipice Blades	5,902	7:55	1.72	3.0	64.1%

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 Iron Boulder.

Estimator is how many trainers of this strength the fight needs. Power is the share of Iron Boulder'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
Splash / Struggle	100%	273%	72.1%	7:02	3.3	1.53

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…

Iron Boulder 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 bug1.6x ghost1.6x steel1.6x water1.6x grass1.6x dark1.6x fighting1x rock1x electric1x ice1x dragon1x fairy1x normal0.63x flying0.63x poison0.63x fire0.63x psychic0.63x

Weak (7)
Neutral (6)
Resists (5)

It resists normal0.625xflying0.625xpoison0.625xfire0.625xpsychic0.625x— bringing one of those is throwing damage away.

What Iron Boulder throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
waterSplash	0	+17	1.5s	0.80s

Charged moves

Move	Power	Energy	Duration	Hits at
normalStruggle	35	-0	2.0s	1.00s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	1,708	2,135
11/11/11	1,724	2,155
12/12/12	1,739	2,174
13/13/13	1,755	2,194
14/14/14	1,771	2,214
15/15/15hundo	1,787	2,234

Caught CP range 1,708 - 1,787, or 2,135 - 2,234 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.

Iron Boulder 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 5: 15,000 HP, 5:00 timer, boss Attack 191 / Defense 165 (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.

#	Attacker	Moveset	Overall	Power	Est.Estimator	TimeTime to win	Faints	Win % (2)	CP	DPS	TDO
1	Zacian (Crowned Sword) fairysteel Metal Claw / Behemoth Blade	Metal Claw / Behemoth Blade+7 more movesets	100%	76.5%	1.44	6:37	3.1	100%	4,979	37.9	3571
2	Mega Beedrill bugpoisonmega Bug Bite / Fell Stinger+	Bug Bite / Fell Stinger++23 more movesets	89%	74.6%	1.48	6:47	8.3	100%	3,383	37.8	1579
3	Necrozma (Dusk Mane) psychicsteel Metal Claw / Sunsteel Strike	Metal Claw / Sunsteel Strike+14 more movesets	97%	74.5%	1.48	6:48	3.5	100%	4,099	37.0	3290
4	Mega Greninja waterdarkmega Water Shuriken / Surf+	Water Shuriken / Surf++17 more movesets	89%	74.0%	1.49	6:51	7.1	100%	3,784	37.4	1823
5	Zamazenta (Crowned Shield) fightingsteel Metal Claw / Behemoth Bash	Metal Claw / Behemoth Bash+7 more movesets	97%	73.0%	1.51	6:57	2.8	100%	4,172	36.1	3848
6	Mega Houndoom darkfiremega Snarl / Dark Pulse+	Snarl / Dark Pulse++17 more movesets	88%	72.0%	1.53	7:03	6.6	100%	3,842	36.4	1939
7	Necrozma (Dawn Wings) psychicghost Shadow Claw / Moongeist Beam	Shadow Claw / Moongeist Beam+14 more movesets	92%	69.0%	1.60	7:21	2.5	100%	4,099	34.3	4281
8	Mega Starmie waterpsychicmega Psywave / Liquidation+	Psywave / Liquidation++44 more movesets	83%	68.4%	1.61	7:24	6.9	100%	3,701	34.6	1857
9	Mega Gengar ghostpoisonmega Lick / Shadow Ball	Lick / Shadow Ball+31 more movesets	89%	68.1%	1.62	7:27	3.2	100%	4,336	33.7	3508
10	Mega Sceptile grassdragonmega Fury Cutter / Frenzy Plant	Fury Cutter / Frenzy Plant+11 more movesets	80%	67.0%	1.64	7:34	7.9	100%	4,056	33.9	1641
11	Mega Chesnaught grassfightingmega Vine Whip / Seed Bomb+	Vine Whip / Seed Bomb++20 more movesets	83%	66.1%	1.67	7:40	4.8	100%	4,093	32.9	2539
12	Shadow Landorus (Therian) groundflyingshadow Mud Shot / Sandsear Storm	Mud Shot / Sandsear Storm+9 more movesets	78%	65.6%	1.68	7:43	8.1	100%	3,922	33.2	1610
13	Primal Kyogre watermega Waterfall / Origin Pulse	Waterfall / Origin Pulse+5 more movesets	82%	65.3%	1.69	7:46	4.6	100%	5,902	32.4	2600
14	Shadow Metagross steelpsychicshadow Fury Cutter / Meteor Mash	Fury Cutter / Meteor Mash+15 more movesets	81%	64.9%	1.70	7:48	4.9	100%	3,791	32.3	2474
15	Primal Groudon groundfiremega Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	81%	64.1%	1.72	7:55	4.7	100%	5,902	31.8	2552
16	Mega Lucario fightingsteelmega Force Palm / Meteor Mash	Force Palm / Meteor Mash+23 more movesets	79%	63.9%	1.72	7:56	5.6	100%	3,826	32.0	2208
17	Mega Metagross steelpsychicmega Fury Cutter / Meteor Mash	Fury Cutter / Meteor Mash+15 more movesets	83%	63.6%	1.73	7:58	3.1	100%	4,911	31.5	3552
18	Shadow Darkrai darkshadow Snarl / Foul Play	Snarl / Foul Play+14 more movesets	74%	63.5%	1.73	7:59	9.5	100%	3,739	32.0	1386
19	Shadow Groudon groundshadow Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	73%	60.7%	1.81	8:21	7.4	100%	4,115	30.5	1748
20	Mega Absol darkmega Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	69%	60.5%	1.82	8:23	12.2	100%	3,301	30.8	1102
21	Shadow Gengar ghostpoisonshadow Lick / Shadow Ball	Lick / Shadow Ball+31 more movesets	74%	60.4%	1.82	8:23	6.0	100%	2,878	30.4	2099
22	Shadow Chandelure ghostfireshadow Hex / Shadow Ball	Hex / Shadow Ball+19 more movesets	75%	60.3%	1.83	8:25	5.1	100%	3,268	30.0	2409
23	Shadow Kyogre watershadow Waterfall / Origin Pulse	Waterfall / Origin Pulse+5 more movesets	72%	60.2%	1.83	8:25	7.4	100%	4,115	30.3	1732
24	Mega Mewtwo Y psychicmega Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+26 more movesets	74%	60.1%	1.83	8:26	5.6	100%	6,428	30.1	2218
25	Mega Heracross bugfightingmega Fury Cutter / Megahorn	Fury Cutter / Megahorn+17 more movesets	72%	59.5%	1.85	8:31	6.8	100%	4,814	29.9	1867
26	Mega Mewtwo X psychicfightingmega Counter / Shadow Ball	Counter / Shadow Ball+26 more movesets	72%	58.9%	1.87	8:37	6.1	100%	6,112	29.6	2065
27	Kartana grasssteel Fury Cutter / Leaf Blade	Fury Cutter / Leaf Blade+14 more movesets	69%	57.8%	1.90	8:46	7.4	100%	3,677	29.1	1743
28	Mega Banette ghostmega Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+5 more movesets	72%	57.4%	1.92	8:50	4.8	100%	3,594	28.4	2522
29	Mega Garchomp dragongroundmega Mud Shot / Earthquake	Mud Shot / Earthquake+13 more movesets	71%	57.3%	1.92	8:51	5.8	100%	5,424	28.7	2159
30	Shadow Absol darkshadow Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	63%	57.1%	1.93	8:53	16.2	100%	2,526	29.2	847

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