Tentacool counters

#0072

water poisonTier 1

Lobby CP

3,513

600

Timer

3:00

Attack

Defense

Difficulty

0.05

Pokebattler scale

Beating Tentacool should take 1 trainer with level 40 counters. Caught CP 549-594.

Weak toground1.6xelectric1.6xpsychic1.6x

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 Psychic Mega — most top counters attack with Psychic

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 Tentacool counters are Mega Mewtwo Y, Shadow Thundurus (Therian), Shadow Landorus (Therian), Shadow Mewtwo, Mewtwo & Regieleki.

Suggested party of sixat most one Mega

M. Mewtwo Y
S. Thundurus (Therian)
S. Landorus (Therian)
S. Mewtwo
Mewtwo
Regieleki

5 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 YMegaLegendarypartyPsycho Cut / Future Sight+0.050:08
2Mega Raichu XMegaThunder Shock / Volt Tackle+0.050:09
3Mega Raichu YMegaThunder Shock / Zap Cannon+0.050:10
4Mega Mewtwo XMegaLegendaryConfusion / Psystrike0.060:10
5Shadow Thundurus (Therian)ShadowLegendarypartyVolt Switch / Wildbolt Storm0.060:10
6Shadow Landorus (Therian)ShadowLegendarypartyMud Shot / Sandsear Storm0.060:10
7Shadow MewtwoShadowLegendarypartyConfusion / Psystrike0.060:11
8Primal GroudonMegaLegendaryMud Shot / Earthquake0.070:12
9Mega AlakazamMegaConfusion / Psychic0.070:12
10MewtwoLegendarypartyPsycho Cut / Psystrike0.070:12
11RegielekiLegendarypartyThunder Shock / Thunder Cage0.070:12

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 — 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 Tentacool

Raid alerts…

Top 15 Tentacool 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 Mewtwo Ypsychicjoint top pick	psychicPsycho CutpsychicFuture Sight+	6,428	0:08	0.05	5214.1%
2	Mega Raichu Xelectric	electricThunder ShockelectricVolt Tackle+	3,510	0:09	0.05	4682.1%
3	Mega Raichu Yelectric	electricThunder ShockelectricZap Cannon+	3,780	0:10	0.05	4470.8%
4	Mega Mewtwo Xpsychicfighting	psychicConfusionpsychicPsystrike	6,112	0:10	0.06	4359.9%
5	Shadow Thundurus (Therian)electricflying	electricVolt SwitchelectricWildbolt Storm	3,659	0:10	0.06	4359.9%
6	Shadow Landorus (Therian)groundflying	groundMud ShotgroundSandsear Storm	3,922	0:10	0.06	4168.1%
7	Shadow Mewtwopsychic	psychicConfusionpsychicPsystrike	4,178	0:11	0.06	3791.1%
8	Primal Groudongroundfire	groundMud ShotgroundEarthquake	5,902	0:12	0.07	3633.1%
9	Mega Alakazampsychic	psychicConfusionpsychicPsychic	4,510	0:12	0.07	3633.1%
10	Mewtwopsychic	psychicPsycho CutpsychicPsystrike	4,178	0:12	0.07	3633.1%
11	Regielekielectric	electricThunder ShockelectricThunder Cage	2,803	0:12	0.07	3633.1%
12	Mega Latiosdragonpsychic	psychicZen HeadbuttpsychicLuster Purge	5,007	0:12	0.07	3487.8%
13	Shadow Alakazampsychic	psychicPsycho CutpsychicPsychic	3,057	0:13	0.07	3432.8%
14	Shadow Regigigasnormal	psychicZen HeadbuttnormalCrush Grip	4,346	0:13	0.07	3422.0%
15	Deoxys (Attack)psychic	psychicZen HeadbuttelectricZap Cannon	2,580	0:13	0.07	3369.1%

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 Tentacool.

Estimator is how many trainers of this strength the fight needs. Power is the share of Tentacool'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%	1111%	4063.9%	0:11	0.06
Poison Sting / Water Pulse	100%	1141%	4019.7%	0:11	0.06
Poison Sting / Wrap	100%	1180%	4035.2%	0:11	0.06
Poison Sting / Bubble Beam	100%	1131%	4053.4%	0:11	0.06
Bubble / Water Pulse	100%	1133%	4074.5%	0:11	0.06
Bubble / Wrap	100%	1109%	4087.7%	0:11	0.06
Bubble / Bubble Beam	100%	1063%	4090.4%	0:11	0.06

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…

Tentacool 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 electric1.6x psychic1.6x normal1x flying1x rock1x ghost1x grass1x dragon1x dark1x fighting0.63x poison0.63x bug0.63x steel0.63x fire0.63x water0.63x ice0.63x fairy0.63x

Weak (3)
Neutral (7)
Resists (8)

It resists fighting0.625xpoison0.625xbug0.625xsteel0.625xfire0.625xwater0.625xice0.625xfairy0.625x— bringing one of those is throwing damage away.

What Tentacool throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
waterBubbleSTAB	10	+12	1.0s	0.55s
poisonPoison StingSTAB	4	+6	0.5s	0.28s

Charged moves

Move	Power	Energy	Duration	Hits at
waterBubble BeamSTAB	45	-33	2.0s	1.55s
waterWater PulseSTAB	65	-50	3.0s	2.00s
normalWrap	60	-33	3.0s	2.15s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	549	686
11/11/11	558	697
12/12/12	567	708
13/13/13	576	720
14/14/14	585	731
15/15/15hundo	594	743

Caught CP range 549 - 594, or 686 - 743 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.

Tentacool 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 66 / Defense 97 (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	Mega Mewtwo Y psychicmega Psycho Cut / Future Sight+	Psycho Cut / Future Sight++26 more movesets	100%	5214.1%	0.05	0:08	100%	6,428	97.1	811
2	Mega Raichu X electricmega Thunder Shock / Volt Tackle+	Thunder Shock / Volt Tackle++35 more movesets	80%	4682.1%	0.05	0:09	100%	3,510	70.0	651
3	Mega Raichu Y electricmega Thunder Shock / Zap Cannon+	Thunder Shock / Zap Cannon++35 more movesets	74%	4470.8%	0.05	0:10	100%	3,780	76.4	745
4	Mega Mewtwo X psychicfightingmega Confusion / Psystrike	Confusion / Psystrike+26 more movesets	77%	4359.9%	0.06	0:10	100%	6,112	61.9	619
5	Shadow Thundurus (Therian) electricflyingshadow Volt Switch / Wildbolt Storm	Volt Switch / Wildbolt Storm+9 more movesets	71%	4359.9%	0.06	0:10	100%	3,659	62.3	623
6	Shadow Landorus (Therian) groundflyingshadow Mud Shot / Sandsear Storm	Mud Shot / Sandsear Storm+9 more movesets	65%	4168.1%	0.06	0:10	100%	3,922	58.9	615
7	Shadow Mewtwo psychicshadow Confusion / Psystrike	Confusion / Psystrike+23 more movesets	61%	3791.1%	0.06	0:11	100%	4,178	53.5	615
8	Primal Groudon groundfiremega Mud Shot / Earthquake	Mud Shot / Earthquake+9 more movesets	57%	3633.1%	0.07	0:12	100%	5,902	50.3	603
9	Mega Alakazam psychicmega Confusion / Psychic	Confusion / Psychic+17 more movesets	58%	3633.1%	0.07	0:12	100%	4,510	52.0	624
10	Mewtwo psychic Psycho Cut / Psystrike	Psycho Cut / Psystrike+23 more movesets	60%	3633.1%	0.07	0:12	100%	4,178	50.3	604
11	Regieleki electric Thunder Shock / Thunder Cage	Thunder Shock / Thunder Cage+11 more movesets	56%	3633.1%	0.07	0:12	100%	2,803	50.4	605
12	Mega Latios dragonpsychicmega Zen Headbutt / Luster Purge	Zen Headbutt / Luster Purge+9 more movesets	60%	3487.8%	0.07	0:12	100%	5,007	48.2	602
13	Shadow Alakazam psychicshadow Psycho Cut / Psychic	Psycho Cut / Psychic+17 more movesets	51%	3432.8%	0.07	0:13	100%	3,057	51.5	653
14	Shadow Regigigas normalshadow Zen Headbutt / Crush Grip	Zen Headbutt / Crush Grip+7 more movesets	56%	3422.0%	0.07	0:13	100%	4,346	50.9	648
15	Deoxys (Attack) psychic Zen Headbutt / Zap Cannon	Zen Headbutt / Zap Cannon+5 more movesets	43%	3369.1%	0.07	0:13	100%	2,580	57.1	737
16	Mega Gallade psychicfightingmega Psycho Cut / Psychic	Psycho Cut / Psychic+19 more movesets	55%	3358.8%	0.07	0:13	100%	4,521	50.5	656
17	Mega Gardevoir psychicfairymega Charge Beam / Psychic	Charge Beam / Psychic+19 more movesets	54%	3353.6%	0.07	0:13	100%	4,512	47.2	614
18	Shadow Galarian Articuno psychicflyingshadow Confusion / Future Sight	Confusion / Future Sight+7 more movesets	53%	3353.6%	0.07	0:13	100%	3,590	47.2	613
19	Shadow Electivire electricshadow Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	50%	3353.6%	0.07	0:13	100%	3,079	46.3	602
20	Mega Manectric electricmega Thunder Fang / Wild Charge	Thunder Fang / Wild Charge+14 more movesets	52%	3353.6%	0.07	0:13	100%	3,580	47.1	612
21	Shadow Excadrill groundsteelshadow Mud Shot / Scorching Sands	Mud Shot / Scorching Sands+14 more movesets	47%	3236.6%	0.08	0:13	100%	3,244	45.8	616
22	Mega Garchomp dragongroundmega Mud Shot / Earthquake	Mud Shot / Earthquake+13 more movesets	54%	3229.4%	0.08	0:13	100%	5,424	44.7	604
23	Shadow Latios dragonpsychicshadow Zen Headbutt / Luster Purge	Zen Headbutt / Luster Purge+9 more movesets	52%	3229.4%	0.08	0:13	100%	3,812	45.3	611
24	Shadow Raikou electricshadow Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	51%	3229.4%	0.08	0:13	100%	3,452	44.5	600
25	Shadow Mamoswine icegroundshadow Mud-Slap / High Horsepower	Mud-Slap / High Horsepower+11 more movesets	47%	3229.4%	0.08	0:13	100%	3,328	46.8	632
26	Shadow Groudon groundshadow Mud Shot / Earthquake	Mud Shot / Earthquake+9 more movesets	46%	3114.0%	0.08	0:14	100%	4,115	43.0	602
27	Shadow Magnezone electricsteelshadow Spark / Wild Charge	Spark / Wild Charge+15 more movesets	48%	3114.0%	0.08	0:14	100%	3,205	43.1	604
28	Shadow Gallade psychicfightingshadow Psycho Cut / Psychic	Psycho Cut / Psychic+19 more movesets	47%	3114.0%	0.08	0:14	100%	3,093	43.3	606
29	Xurkitree electric Thunder Shock / Discharge	Thunder Shock / Discharge+7 more movesets	47%	3098.5%	0.08	0:14	100%	3,937	47.4	667
30	Shadow Rhyperior groundrockshadow Mud-Slap / Earthquake	Mud-Slap / Earthquake+15 more movesets	45%	3087.5%	0.08	0:14	100%	3,733	46.8	660

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