Gyarados counters

#0130

water flyingTier 3

Lobby CP

21,436

3,600

Timer

3:00

Attack

183

Defense

146

Difficulty

0.38

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 Mega Raichu Y, Shadow Thundurus (Therian), Regieleki, Shadow Electivire, Shadow Raikou & Zeraora.

Suggested party of sixat most one Mega

M. Raichu Y
S. Thundurus (Therian)
Regieleki
S. Electivire
S. Raikou
Zeraora

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 %

1Mega Raichu YMegapartyThunder Shock / Zap Cannon+0.330:57
2Mega Raichu XMegaVolt Switch / Volt Tackle+0.361:03
3Shadow Thundurus (Therian)ShadowLegendarypartyVolt Switch / Wildbolt Storm0.361:04
4RegielekiLegendarypartyThunder Shock / Thunder Cage0.401:10
5Shadow ElectivireShadowpartyThunder Shock / Wild Charge0.411:13
6Shadow RaikouShadowLegendarypartyThunder Shock / Wild Charge0.421:13
7ZeraoraLegendarypartySpark / Plasma Fists0.421:14
8XurkitreeLegendaryThunder Shock / Discharge0.421:14
9Mega ManectricMegaThunder Fang / Wild Charge0.431:15
10Shadow MagnezoneShadowVolt Switch / Wild Charge0.431:15

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

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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 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	Mega Raichu Yelectricjoint top pick	electricThunder ShockelectricZap Cannon+	3,780	0:57	0.33	2.2	408.5%
2	Mega Raichu Xelectric	electricVolt SwitchelectricVolt Tackle+	3,510	1:03	0.36	1.8	374.3%
3	Shadow Thundurus (Therian)electricflying	electricVolt SwitchelectricWildbolt Storm	3,659	1:04	0.36	2.4	367.5%
4	Regielekielectric	electricThunder ShockelectricThunder Cage	2,803	1:10	0.40	2.7	334.4%
5	Shadow Electivireelectric	electricThunder ShockelectricWild Charge	3,079	1:13	0.41	3.0	322.4%
6	Shadow Raikouelectric	electricThunder ShockelectricWild Charge	3,452	1:13	0.42	2.3	320.0%
7	Zeraoraelectric	electricSparkelectricPlasma Fists	3,419	1:14	0.42	2.1	317.6%
8	Xurkitreeelectric	electricThunder ShockelectricDischarge	3,937	1:14	0.42	3.0	315.0%
9	Mega Manectricelectric	electricThunder FangelectricWild Charge	3,580	1:15	0.43	2.5	313.5%
10	Shadow Magnezoneelectricsteel	electricVolt SwitchelectricWild Charge	3,205	1:15	0.43	2.1	312.7%
11	Mega Mewtwo Ypsychic	psychicPsycho CutelectricThunderbolt	6,428	1:16	0.43	1.8	310.1%
12	Thundurus (Therian)electricflying	electricVolt SwitchelectricWildbolt Storm	3,659	1:16	0.43	2.5	309.3%
13	Shadow Zapdoselectricflying	electricThunder ShockelectricThunderbolt	3,527	1:16	0.43	2.5	308.0%
14	Mega Mewtwo Xpsychicfighting	psychicPsycho CutelectricThunderbolt	6,112	1:18	0.45	1.5	299.5%
15	Zekromdragonelectric	electricCharge BeamelectricFusion Bolt	4,038	1:19	0.45	2.3	297.3%

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	Faints	Estimator
Random (any moveset)showing	100%	174%	343.7%	1:08	2.3	0.39
Waterfall / Hydro Pump	100%	129%	315.1%	1:14	3.7	0.42
Bite / Outrage	100%	154%	334.6%	1:10	2.8	0.40
Dragon Breath / Outrage	100%	154%	334.6%	1:10	2.8	0.40
Bite / Hydro Pump	100%	146%	334.8%	1:10	3.0	0.40
Dragon Breath / Hydro Pump	100%	146%	334.8%	1:10	3.0	0.40
Waterfall / Outrage	100%	151%	338.8%	1:09	2.8	0.39
Waterfall / Crunch	100%	181%	348.3%	1:07	2.2	0.38
Bite / Crunch	100%	197%	351.4%	1:07	1.9	0.38
Dragon Breath / Crunch	100%	197%	351.4%	1:07	1.9	0.38
Bite / Twister	100%	232%	353.9%	1:06	1.4	0.38
Dragon Breath / Twister	100%	232%	353.9%	1:06	1.4	0.38
Waterfall / Twister	100%	208%	355.1%	1:06	1.7	0.38

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 3: 3,600 HP, 3:00 timer, boss Attack 183 / Defense 146 (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 Raichu Y electricmega Thunder Shock / Zap Cannon+	Thunder Shock / Zap Cannon++35 more movesets	100%	408.5%	0.33	0:57	2.0	100%	3,780	69.3	1341
2	Mega Raichu X electricmega Volt Switch / Volt Tackle+	Volt Switch / Volt Tackle++35 more movesets	93%	374.3%	0.36	1:03	1.6	100%	3,510	58.5	1377
3	Shadow Thundurus (Therian) electricflyingshadow Volt Switch / Wildbolt Storm	Volt Switch / Wildbolt Storm+9 more movesets	89%	367.5%	0.36	1:04	2.2	100%	3,659	60.1	1206
4	Regieleki electric Thunder Shock / Thunder Cage	Thunder Shock / Thunder Cage+11 more movesets	79%	334.4%	0.40	1:10	2.5	100%	2,803	53.0	1049
5	Shadow Electivire electricshadow Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	74%	322.4%	0.41	1:13	2.8	100%	3,079	50.3	962
6	Shadow Raikou electricshadow Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	77%	320.0%	0.42	1:13	2.1	100%	3,452	50.3	1183
7	Zeraora electric Spark / Plasma Fists	Spark / Plasma Fists+9 more movesets	77%	317.6%	0.42	1:14	1.9	100%	3,419	49.1	1261
8	Xurkitree electric Thunder Shock / Discharge	Thunder Shock / Discharge+7 more movesets	73%	315.0%	0.42	1:14	2.7	100%	3,937	49.4	982
9	Mega Manectric electricmega Thunder Fang / Wild Charge	Thunder Fang / Wild Charge+14 more movesets	75%	313.5%	0.43	1:15	2.3	100%	3,580	49.6	1131
10	Shadow Magnezone electricsteelshadow Volt Switch / Wild Charge	Volt Switch / Wild Charge+15 more movesets	76%	312.7%	0.43	1:15	1.9	100%	3,205	48.8	1259
11	Mega Mewtwo Y psychicmega Psycho Cut / Thunderbolt	Psycho Cut / Thunderbolt+26 more movesets	78%	310.1%	0.43	1:16	1.6	100%	6,428	48.4	1389
12	Thundurus (Therian) electricflying Volt Switch / Wildbolt Storm	Volt Switch / Wildbolt Storm+9 more movesets	74%	309.3%	0.43	1:16	2.3	100%	3,659	49.4	1116
13	Shadow Zapdos electricflyingshadow Thunder Shock / Thunderbolt	Thunder Shock / Thunderbolt+11 more movesets	73%	308.0%	0.43	1:16	2.3	100%	3,527	47.9	1096
14	Mega Mewtwo X psychicfightingmega Psycho Cut / Thunderbolt	Psycho Cut / Thunderbolt+26 more movesets	76%	299.5%	0.45	1:18	1.4	100%	6,112	47.8	1584
15	Zekrom dragonelectric Charge Beam / Fusion Bolt	Charge Beam / Fusion Bolt+9 more movesets	72%	297.3%	0.45	1:19	2.1	100%	4,038	46.9	1219
16	Shadow Luxray electricshadow Spark / Wild Charge	Spark / Wild Charge+14 more movesets	66%	287.6%	0.46	1:22	3.1	100%	2,888	45.5	879
17	Shadow Thundurus (Incarnate) electricflyingshadow Thunder Shock / Thunder Punch	Thunder Shock / Thunder Punch+7 more movesets	65%	287.5%	0.46	1:22	3.2	100%	3,345	44.9	854
18	Shadow Vikavolt bugelectricshadow Volt Switch / Discharge	Volt Switch / Discharge+15 more movesets	63%	280.3%	0.48	1:24	3.4	100%	3,117	44.5	836
19	Mega Ampharos electricdragonmega Volt Switch / Zap Cannon	Volt Switch / Zap Cannon+15 more movesets	67%	279.3%	0.48	1:24	2.3	100%	4,245	44.5	1133
20	Electivire electric Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	62%	267.6%	0.50	1:28	2.8	100%	3,079	42.3	957
21	Raikou electric Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	63%	266.2%	0.50	1:28	2.3	100%	3,452	42.0	1153
22	Shadow Mewtwo psychicshadow Psycho Cut / Thunderbolt	Psycho Cut / Thunderbolt+23 more movesets	60%	261.0%	0.51	1:30	3.1	100%	4,178	41.1	888
23	Magnezone electricsteel Spark / Wild Charge	Spark / Wild Charge+15 more movesets	60%	254.5%	0.53	1:32	2.3	100%	3,205	39.4	1181
24	Pawmot electricfighting Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+23 more movesets	57%	254.0%	0.53	1:32	3.2	100%	2,634	39.6	868
25	Zapdos electricflying Thunder Shock / Thunderbolt	Thunder Shock / Thunderbolt+11 more movesets	59%	252.0%	0.53	1:33	2.5	100%	3,527	39.9	1058
26	Shadow Alolan Golem rockelectricshadow Volt Switch / Wild Charge	Volt Switch / Wild Charge+8 more movesets	56%	251.7%	0.53	1:33	3.7	100%	2,949	41.2	895
27	Tapu Koko electricfairy Volt Switch / Thunderbolt	Volt Switch / Thunderbolt+9 more movesets	61%	249.6%	0.54	1:34	2.0	100%	3,168	39.0	1344
28	Luxray electric Spark / Wild Charge	Spark / Wild Charge+14 more movesets	57%	249.5%	0.54	1:34	3.0	100%	2,888	39.2	901
29	Thundurus (Incarnate) electricflying Thunder Shock / Thunder Punch	Thunder Shock / Thunder Punch+7 more movesets	55%	242.7%	0.55	1:37	3.0	100%	3,345	37.8	888
30	Vikavolt bugelectric Spark / Discharge	Spark / Discharge+15 more movesets	54%	239.7%	0.56	1:38	3.2	100%	3,117	37.3	845

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