Gyarados counters

#0130

water flyingTier 1

Lobby CP

8,751

600

Timer

3:00

Attack

150

Defense

120

Difficulty

0.05

Pokebattler scale

Beating Gyarados should take 1 trainer with level 40 counters. Caught CP 1,855-1,937.

Weak toelectric2.56xrock1.6x

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 an Electric Mega — most top counters attack with Electric

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 Gyarados counters are Regieleki, Mega Raichu X, Shadow Thundurus (Therian), Thundurus (Therian), Shadow Zapdos & Xurkitree.

Suggested party of sixat most one Mega

Regieleki
M. Raichu X
S. Thundurus (Therian)
Thundurus (Therian)
S. Zapdos
Xurkitree

1 more Mega 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 %

1RegielekiLegendarypartyLock-On / Thunder Cage0.050:08
2Mega Raichu XMegapartyThunder Shock / Volt Tackle+0.050:09
3Mega Raichu YMegaThunder Shock / Zap Cannon+0.050:10
4Shadow Thundurus (Therian)ShadowLegendarypartyVolt Switch / Thunder0.060:10
5Thundurus (Therian)LegendarypartyVolt Switch / Wildbolt Storm0.060:10
6Shadow ZapdosShadowLegendarypartyThunder Shock / Zap Cannon0.060:10
7XurkitreeLegendarypartySpark / Discharge0.060:11
8Mega AmpharosMegaVolt Switch / Zap Cannon0.060:11
9ZekromLegendaryCharge Beam / Fusion Bolt0.060:11
10Shadow MagnezoneShadowVolt Switch / Zap Cannon0.060:11

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 — Solo 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 Gyarados Mega Gyarados

Raid alerts…

Top 15 Gyarados 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	Regielekielectricjoint top pick	normalLock-OnelectricThunder Cage	2,803	0:08	0.05	5227.9%
2	Mega Raichu Xelectric	electricThunder ShockelectricVolt Tackle+	3,510	0:09	0.05	4838.0%
3	Mega Raichu Yelectric	electricThunder ShockelectricZap Cannon+	3,780	0:10	0.05	4578.8%
4	Shadow Thundurus (Therian)electricflying	electricVolt SwitchelectricThunder	3,659	0:10	0.06	4359.9%
5	Thundurus (Therian)electricflying	electricVolt SwitchelectricWildbolt Storm	3,659	0:10	0.06	4359.9%
6	Shadow Zapdoselectricflying	electricThunder ShockelectricZap Cannon	3,527	0:10	0.06	4249.4%
7	Xurkitreeelectric	electricSparkelectricDischarge	3,937	0:11	0.06	4136.5%
8	Mega Ampharoselectricdragon	electricVolt SwitchelectricZap Cannon	4,245	0:11	0.06	3963.4%
9	Zekromdragonelectric	electricCharge BeamelectricFusion Bolt	4,038	0:11	0.06	3963.4%
10	Shadow Magnezoneelectricsteel	electricVolt SwitchelectricZap Cannon	3,205	0:11	0.06	3963.4%
11	Shadow Electivireelectric	electricThunder ShockelectricWild Charge	3,079	0:11	0.06	3814.3%
12	Shadow Raikouelectric	electricThunder ShockelectricThunderbolt	3,452	0:12	0.06	3768.2%
13	Electivireelectric	electricThunder ShockelectricWild Charge	3,079	0:12	0.06	3764.9%
14	Shadow Manectricelectric	electricCharge BeamelectricWild Charge	2,340	0:12	0.06	3758.4%
15	Deoxyspsychic	electricCharge BeamelectricThunderbolt	3,160	0:12	0.06	3755.8%

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 Gyarados.

Estimator is how many trainers of this strength the fight needs. Power is the share of Gyarados'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	Estimator
Random (any moveset)showing	100%	914%	4515.3%	0:10	0.05
Bite / Hydro Pump	100%	1134%	4463.9%	0:10	0.05
Bite / Outrage	100%	881%	4463.9%	0:10	0.05
Dragon Breath / Hydro Pump	100%	1134%	4463.9%	0:10	0.05
Dragon Breath / Outrage	100%	881%	4463.9%	0:10	0.05
Waterfall / Hydro Pump	100%	858%	4467.1%	0:10	0.05
Bite / Twister	100%	1014%	4473.4%	0:10	0.05
Dragon Breath / Twister	100%	1014%	4473.4%	0:10	0.05
Bite / Crunch	100%	959%	4476.6%	0:10	0.05
Dragon Breath / Crunch	100%	959%	4476.6%	0:10	0.05
Waterfall / Outrage	100%	845%	4505.6%	0:10	0.05
Waterfall / Twister	100%	828%	4571.2%	0:10	0.05
Waterfall / Crunch	100%	783%	4584.5%	0:10	0.05

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…

Gyarados 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.

electric2.56x rock1.6x normal1x flying1x poison1x ghost1x grass1x psychic1x ice1x dragon1x dark1x fairy1x fighting0.63x bug0.63x steel0.63x fire0.63x water0.63x ground0.39x

Double weak (1)
Weak (1)
Neutral (10)
Resists (6)

It resists ground0.39xfighting0.625xbug0.625xsteel0.625xfire0.625xwater0.625x— bringing one of those is throwing damage away.

What Gyarados throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
waterWaterfallSTAB	13	+7	1.0s	0.75s
darkBite	6	+4	0.5s	0.30s
dragonDragon Breath	6	+4	0.5s	0.30s

Charged moves

Move	Power	Energy	Duration	Hits at
waterHydro PumpSTAB	135	-100	3.5s	1.10s
dragonOutrage	110	-50	4.0s	2.60s
darkCrunch	65	-33	3.0s	1.10s
dragonTwister	50	-33	3.0s	1.15s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	1,855	2,319
11/11/11	1,871	2,339
12/12/12	1,888	2,360
13/13/13	1,904	2,380
14/14/14	1,921	2,401
15/15/15hundo	1,937	2,422

Caught CP range 1,855 - 1,937, or 2,319 - 2,422 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.

Gyarados 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 1: 600 HP, 3:00 timer, boss Attack 150 / Defense 120 (15/15/15 at tier CPM 0.5974).

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	Win % (1)	CP	DPS	TDO
1	Regieleki electric Lock-On / Thunder Cage	Lock-On / Thunder Cage+11 more movesets	100%	5227.9%	0.05	0:08	100%	2,803	73.1	609
2	Mega Raichu X electricmega Thunder Shock / Volt Tackle+	Thunder Shock / Volt Tackle++35 more movesets	96%	4838.0%	0.05	0:09	100%	3,510	91.8	827
3	Mega Raichu Y electricmega Thunder Shock / Zap Cannon+	Thunder Shock / Zap Cannon++35 more movesets	87%	4578.8%	0.05	0:10	100%	3,780	100.5	956
4	Shadow Thundurus (Therian) electricflyingshadow Volt Switch / Thunder	Volt Switch / Thunder+9 more movesets	77%	4359.9%	0.06	0:10	100%	3,659	62.2	622
5	Thundurus (Therian) electricflying Volt Switch / Wildbolt Storm	Volt Switch / Wildbolt Storm+9 more movesets	80%	4359.9%	0.06	0:10	100%	3,659	67.6	676
6	Shadow Zapdos electricflyingshadow Thunder Shock / Zap Cannon	Thunder Shock / Zap Cannon+11 more movesets	79%	4249.4%	0.06	0:10	100%	3,527	62.9	645
7	Xurkitree electric Spark / Discharge	Spark / Discharge+7 more movesets	73%	4136.5%	0.06	0:11	100%	3,937	58.1	612
8	Mega Ampharos electricdragonmega Volt Switch / Zap Cannon	Volt Switch / Zap Cannon+15 more movesets	73%	3963.4%	0.06	0:11	100%	4,245	58.5	643
9	Zekrom dragonelectric Charge Beam / Fusion Bolt	Charge Beam / Fusion Bolt+9 more movesets	72%	3963.4%	0.06	0:11	100%	4,038	54.6	600
10	Shadow Magnezone electricsteelshadow Volt Switch / Zap Cannon	Volt Switch / Zap Cannon+15 more movesets	72%	3963.4%	0.06	0:11	100%	3,205	57.3	630
11	Shadow Electivire electricshadow Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	66%	3814.3%	0.06	0:11	100%	3,079	65.3	745
12	Shadow Raikou electricshadow Thunder Shock / Thunderbolt	Thunder Shock / Thunderbolt+9 more movesets	67%	3768.2%	0.06	0:12	100%	3,452	57.9	669
13	Electivire electric Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	65%	3764.9%	0.06	0:12	100%	3,079	54.2	627
14	Shadow Manectric electricshadow Charge Beam / Wild Charge	Charge Beam / Wild Charge+14 more movesets	61%	3758.4%	0.06	0:12	100%	2,340	54.9	636
15	Deoxys psychic Charge Beam / Thunderbolt	Charge Beam / Thunderbolt+5 more movesets	58%	3755.8%	0.06	0:12	100%	3,160	54.5	623
16	Raikou electric Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	68%	3707.3%	0.07	0:12	100%	3,452	52.3	615
17	Mega Mewtwo Y psychicmega Psycho Cut / Thunderbolt	Psycho Cut / Thunderbolt+26 more movesets	70%	3676.0%	0.07	0:12	100%	6,428	57.5	682
18	Mega Mewtwo X psychicfightingmega Psycho Cut / Thunderbolt	Psycho Cut / Thunderbolt+26 more movesets	71%	3676.0%	0.07	0:12	100%	6,112	55.8	662
19	Mega Manectric electricmega Charge Beam / Wild Charge	Charge Beam / Wild Charge+14 more movesets	66%	3663.6%	0.07	0:12	100%	3,580	58.8	700
20	Shadow Thundurus (Incarnate) electricflyingshadow Thunder Shock / Thunder	Thunder Shock / Thunder+7 more movesets	61%	3633.1%	0.07	0:12	100%	3,345	50.6	607
21	Shadow Magneton electricsteelshadow Spark / Zap Cannon	Spark / Zap Cannon+19 more movesets	61%	3633.1%	0.07	0:12	100%	2,485	50.8	609
22	Shadow Zebstrika electricshadow Spark / Wild Charge	Spark / Wild Charge+5 more movesets	60%	3630.1%	0.07	0:12	100%	2,428	54.1	648
23	Shadow Luxray electricshadow Spark / Wild Charge	Spark / Wild Charge+14 more movesets	62%	3612.0%	0.07	0:12	100%	2,888	58.9	710
24	Shadow Alolan Golem rockelectricshadow Volt Switch / Wild Charge	Volt Switch / Wild Charge+8 more movesets	62%	3609.0%	0.07	0:12	100%	2,949	55.1	664
25	Shadow Heliolisk electricnormalshadow Volt Switch / Thunderbolt	Volt Switch / Thunderbolt+14 more movesets	59%	3573.5%	0.07	0:12	100%	2,600	52.0	634
26	Shadow Vikavolt bugelectricshadow Spark / Discharge	Spark / Discharge+15 more movesets	61%	3570.6%	0.07	0:12	100%	3,117	55.9	685
27	Shadow Arcanine fireshadow Thunder Fang / Wild Charge	Thunder Fang / Wild Charge+27 more movesets	59%	3491.1%	0.07	0:12	100%	3,029	50.5	621
28	Shadow Ampharos electricshadow Volt Switch / Zap Cannon	Volt Switch / Zap Cannon+15 more movesets	60%	3487.8%	0.07	0:12	100%	2,852	48.0	600
29	Zeraora electric Volt Switch / Wild Charge	Volt Switch / Wild Charge+9 more movesets	63%	3487.8%	0.07	0:12	100%	3,419	53.3	666
30	Shadow Mewtwo psychicshadow Psycho Cut / Thunderbolt	Psycho Cut / Thunderbolt+23 more movesets	59%	3476.6%	0.07	0:13	100%	4,178	48.2	605

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