A Shadow raid boss hits harder than its normal form (Shadow Frenzy), and the Pokemon you catch afterwards is a Shadow. Purified Gems weaken it mid-fight; the simulation does not use them.
Beating Shadow Horsea should take 2 trainers with level 40 counters. Caught CP 522-603.
Weak tograss1.6xelectric1.6x
Improve your raidweather · friendship · Mega in the lobby · Party Power · Adventure EffectsShow ▾Hide ▴
Weather
★ boosts a type this boss is weak toFriendship
every trainer in the lobby who is your friendMega in the lobby
a Mega boosts every trainer's attacks: 1.3x of its own type, 1.1x of othersParty Power
Party Play: the charged move after a full meter does 2xAdventure Effects
only these three change a raidOf 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 40The best Shadow Horsea counters are Mega Raichu Y, Shadow Thundurus (Therian), Regieleki, Thundurus (Therian), Kartana & Shadow Electivire.
M. Raichu Y
S. Thundurus (Therian)
Regieleki- Thundurus (Therian)
Kartana
S. Electivire
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 Raichu YMegapartyThunder Shock / Zap Cannon+1.436:47
- 2
Mega Raichu XMegaThunder Shock / Volt Tackle+1.597:31 - 3Shadow Thundurus (Therian)ShadowLegendarypartyVolt Switch / Wildbolt Storm1.677:54
- 4
Mega SceptileMegaFury Cutter / Frenzy Plant1.758:17 - 5
Mega ChesnaughtMegaVine Whip / Seed Bomb+1.768:18 - 6
Mega Mewtwo YMegaLegendaryPsycho Cut / Future Sight+1.788:25 - 7RegielekiLegendarypartyLock-On / Thunder Cage1.848:42
- 8
Mega Mewtwo XMegaLegendaryPsycho Cut / Dynamic Punch+1.939:08 - 9Thundurus (Therian)LegendarypartyVolt Switch / Wildbolt Storm1.969:14
- 10KartanaLegendarypartyRazor Leaf / Leaf Blade1.979:18
- 11Shadow ElectivireShadowpartyThunder Shock / Wild Charge1.979:20
More orders under All settings (Sort by). The top 15 in detail.
Type a name, then Enter or click a result
Top 15 Shadow Horsea 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.
| # | Attacker | Moveset | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | Mega Raichu Yelectricjoint top pick | electricThunder ShockelectricZap Cannon+ | 3,780 | 6:47 | 1.43 | 6.0 | 78.7% | |
| 2 | Mega Raichu Xelectric | electricThunder ShockelectricVolt Tackle+ | 3,510 | 7:31 | 1.59 | 6.0 | 71.0% | |
| 3 | Shadow Thundurus (Therian)electricflying | electricVolt SwitchelectricWildbolt Storm | 3,659 | 7:54 | 1.67 | 6.0 | 67.5% | |
| 4 | Mega Sceptilegrassdragon | bugFury CuttergrassFrenzy Plant | 4,056 | 8:17 | 1.75 | 5.0 | 64.4% | |
| 5 | Mega Chesnaughtgrassfighting | grassVine WhipgrassSeed Bomb+ | 4,093 | 8:18 | 1.76 | 4.4 | 64.2% | |
| 6 | Mega Mewtwo Ypsychic | psychicPsycho CutpsychicFuture Sight+ | 6,428 | 8:25 | 1.78 | 5.5 | 63.3% | |
| 7 | Regielekielectric | normalLock-OnelectricThunder Cage | 2,803 | 8:42 | 1.84 | 6.0 | 61.3% | |
| 8 | Mega Mewtwo Xpsychicfighting | psychicPsycho CutfightingDynamic Punch+ | 6,112 | 9:08 | 1.93 | 5.6 | 58.4% | |
| 9 | Thundurus (Therian)electricflying | electricVolt SwitchelectricWildbolt Storm | 3,659 | 9:14 | 1.96 | 6.0 | 57.7% | |
| 10 | Kartanagrasssteel | grassRazor LeafgrassLeaf Blade | 3,677 | 9:18 | 1.97 | 6.0 | 57.3% | |
| 11 | Shadow Electivireelectric | electricThunder ShockelectricWild Charge | 3,079 | 9:20 | 1.97 | 6.0 | 57.2% | |
| 12 |  Shadow Raikouelectric | electricThunder ShockelectricWild Charge | 3,452 | 9:21 | 1.98 | 6.0 | 57.0% | |
| 13 |  Xurkitreeelectric | electricThunder ShockelectricDischarge | 3,937 | 9:24 | 1.99 | 6.0 | 56.8% | |
| 14 |  Zeraoraelectric | electricVolt SwitchelectricPlasma Fists | 3,419 | 9:26 | 2.00 | 6.0 | 56.5% | |
| 15 |  Mega Manectricelectric | electricThunder FangelectricWild Charge | 3,580 | 9:30 | 2.01 | 6.0 | 56.1% |
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 Shadow Horsea.
Estimator is how many trainers of this strength the fight needs. Power is the share of Shadow Horsea'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.
Simulating each boss moveset…
Horsea 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.
- Weak (2)
- Neutral (12)
- Resists (4)
It resists steel0.625xfire0.625xwater0.625xice0.625x— bringing one of those is throwing damage away.
What Horsea throws at you
Its standard movepool, with the damage window a dodge has to beat.
Fast moves
| Move | Power | Energy | Duration | Hits at |
|---|---|---|---|---|
| waterWater GunSTAB | 5 | +5 | 0.5s | 0.30s |
| waterBubbleSTAB | 10 | +12 | 1.0s | 0.55s |
Charged moves
| Move | Power | Energy | Duration | Hits at |
|---|---|---|---|---|
| steelFlash Cannon | 100 | -100 | 2.5s | 1.40s |
| waterBubble BeamSTAB | 45 | -33 | 2.0s | 1.55s |
| dragonDragon Pulse | 90 | -50 | 3.5s | 2.05s |
Catch CP
What the encounter after the fight can hand you.
| IV spread | CP at L20 | CP at L25 (weather boosted) |
|---|---|---|
| 6/6/6floor | 522 | 653 |
| 7/7/7 | 531 | 664 |
| 8/8/8 | 540 | 675 |
| 9/9/9 | 549 | 686 |
| 10/10/10 | 558 | 697 |
| 11/11/11 | 567 | 708 |
| 12/12/12 | 576 | 720 |
| 13/13/13 | 585 | 731 |
| 14/14/14 | 594 | 743 |
| 15/15/15hundo | 603 | 754 |
Caught CP range 522 - 603, or 653 - 754 when the weather boosts it.
A raid encounter is level 20 (level 25 weather boosted) and cannot roll an IV below 6/6/6 — a Shadow raid's floor is 6, not the usual 10. Anything outside the first range is not this raid's reward.
Shadow raid floor. A Shadow Raid encounter rolls a minimum of 6/6/6, so this band starts at 522, not at the 558 a 10/10/10 catch would give. pokebattler.com's own page for a Shadow boss prints that 10/10/10 value as its floor — it is applying the standard-raid rule — so expect its range to start 36 CP higher than this one. LeekDuck's published band agrees with the table above.
When it is in raids
From the raid schedule, refreshed daily.
Horsea 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
Shadow Tier 5: 15,000 HP, 5:00 timer, boss Attack 118 / Defense 96 (15/15/15 at tier CPM 0.82).
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 | Mega Raichu Y electricmega Thunder Shock / Zap Cannon+ | Thunder Shock / Zap Cannon++35 more movesets | 100% | 78.7% | 1.43 | 6:47 | 12.8 | 100% | 3,780 | 38.5 | 1099 |
| 2 | Mega Raichu X electricmega Thunder Shock / Volt Tackle+ | Thunder Shock / Volt Tackle++35 more movesets | 92% | 71.0% | 1.59 | 7:31 | 11.0 | 100% | 3,510 | 34.4 | 1255 |
| 3 | Shadow Thundurus (Therian) electricflyingshadow Volt Switch / Wildbolt Storm | Volt Switch / Wildbolt Storm+9 more movesets | 84% | 67.5% | 1.67 | 7:54 | 15.0 | 100% | 3,659 | 33.1 | 952 |
| 4 | Mega Sceptile grassdragonmega Fury Cutter / Frenzy Plant | Fury Cutter / Frenzy Plant+11 more movesets | 81% | 64.4% | 1.75 | 8:17 | 13.3 | 100% | 4,056 | 31.2 | 1350 |
| 5 | Mega Chesnaught grassfightingmega Vine Whip / Seed Bomb+ | Vine Whip / Seed Bomb++20 more movesets | 87% | 64.2% | 1.76 | 8:18 | 7.2 | 100% | 4,093 | 30.6 | 1885 |
| 6 | Mega Mewtwo Y psychicmega Psycho Cut / Future Sight+ | Psycho Cut / Future Sight++26 more movesets | 83% | 63.3% | 1.78 | 8:25 | 9.2 | 100% | 6,428 | 30.3 | 1448 |
| 7 | Regieleki electric Lock-On / Thunder Cage | Lock-On / Thunder Cage+11 more movesets | 76% | 61.3% | 1.84 | 8:42 | 16.1 | 100% | 2,803 | 30.0 | 877 |
| 8 | Mega Mewtwo X psychicfightingmega Psycho Cut / Dynamic Punch+ | Psycho Cut / Dynamic Punch++26 more movesets | 76% | 58.4% | 1.93 | 9:08 | 10.3 | 100% | 6,112 | 28.1 | 1309 |
| 9 | Thundurus (Therian) electricflying Volt Switch / Wildbolt Storm | Volt Switch / Wildbolt Storm+9 more movesets | 72% | 57.7% | 1.96 | 9:14 | 14.7 | 100% | 3,659 | 28.0 | 946 |
| 10 | Kartana grasssteel Razor Leaf / Leaf Blade | Razor Leaf / Leaf Blade+14 more movesets | 73% | 57.3% | 1.97 | 9:18 | 13.1 | 100% | 3,677 | 27.6 | 1057 |
| 11 | Shadow Electivire electricshadow Thunder Shock / Wild Charge | Thunder Shock / Wild Charge+9 more movesets | 70% | 57.2% | 1.97 | 9:20 | 18.5 | 100% | 3,079 | 28.0 | 765 |
| 12 | Shadow Raikou electricshadow Thunder Shock / Wild Charge | Thunder Shock / Wild Charge+9 more movesets | 71% | 57.0% | 1.98 | 9:21 | 14.4 | 100% | 3,452 | 27.7 | 963 |
| 13 | Xurkitree electric Thunder Shock / Discharge | Thunder Shock / Discharge+7 more movesets | 70% | 56.8% | 1.99 | 9:24 | 16.8 | 100% | 3,937 | 27.6 | 832 |
| 14 | Zeraora electric Volt Switch / Plasma Fists | Volt Switch / Plasma Fists+9 more movesets | 71% | 56.5% | 2.00 | 9:26 | 13.4 | 100% | 3,419 | 27.4 | 1041 |
| 15 | Mega Manectric electricmega Thunder Fang / Wild Charge | Thunder Fang / Wild Charge+14 more movesets | 70% | 56.1% | 2.01 | 9:30 | 15.1 | 100% | 3,580 | 27.2 | 919 |
| 16 | Mega Rayquaza dragonflyingmega Dragon Tail / Dragon Ascent | Dragon Tail / Dragon Ascent+11 more movesets | 71% | 55.0% | 2.05 | 9:41 | 11.7 | 100% | 5,713 | 26.6 | 1342 |
| 17 | Shadow Magnezone electricsteelshadow Volt Switch / Wild Charge | Volt Switch / Wild Charge+15 more movesets | 69% | 54.9% | 2.06 | 9:43 | 13.3 | 98% | 3,205 | 26.5 | 1052 |
| 18 | Shadow Zapdos electricflyingshadow Thunder Shock / Thunderbolt | Thunder Shock / Thunderbolt+11 more movesets | 67% | 54.1% | 2.09 | 9:51 | 15.8 | 94% | 3,527 | 26.3 | 881 |
| 19 | Zekrom dragonelectric Charge Beam / Fusion Bolt | Charge Beam / Fusion Bolt+9 more movesets | 68% | 53.6% | 2.11 | 9:57 | 13.2 | 66% | 4,038 | 25.9 | 1326 |
| 20 | Shaymin (Sky) grassflying Magical Leaf / Grass Knot | Magical Leaf / Grass Knot+11 more movesets | 67% | 53.1% | 2.13 | 10:02 | 13.3 | 38% | 3,592 | 25.6 | 1132 |
| 21 | Shadow Regigigas normalshadow Hidden Power / Crush Grip | Hidden Power / Crush Grip+7 more movesets | 67% | 53.0% | 2.13 | 10:03 | 14.3 | 50% | 4,346 | 25.7 | 972 |
| 22 | Shadow Sceptile grassshadow Fury Cutter / Frenzy Plant | Fury Cutter / Frenzy Plant+11 more movesets | 64% | 52.9% | 2.13 | 10:05 | 19.3 | 40% | 2,757 | 26.0 | 779 |
| 23 | Shadow Tangrowth grassshadow Vine Whip / Power Whip | Vine Whip / Power Whip+9 more movesets | 65% | 52.4% | 2.15 | 10:10 | 15.0 | 16% | 3,030 | 25.4 | 991 |
| 24 | Shadow Chesnaught grassfightingshadow Vine Whip / Frenzy Plant | Vine Whip / Frenzy Plant+17 more movesets | 65% | 52.2% | 2.16 | 10:13 | 14.6 | 6% | 2,954 | 25.2 | 1021 |
| 25 | Shadow Luxray electricshadow Spark / Wild Charge | Spark / Wild Charge+14 more movesets | 63% | 52.1% | 2.17 | 10:14 | 19.8 | 4% | 2,888 | 25.5 | 717 |
| 26 | Mega Venusaur grasspoisonmega Vine Whip / Frenzy Plant | Vine Whip / Frenzy Plant+9 more movesets | 66% | 51.6% | 2.19 | 10:20 | 11.4 | 0% | 3,698 | 24.8 | 1289 |
| 27 | Shadow Venusaur grasspoisonshadow Vine Whip / Frenzy Plant | Vine Whip / Frenzy Plant+9 more movesets | 63% | 51.1% | 2.21 | 10:26 | 16.9 | 0% | 2,720 | 24.8 | 902 |
| 28 | Shadow Thundurus (Incarnate) electricflyingshadow Thunder Shock / Thunder Punch | Thunder Shock / Thunder Punch+7 more movesets | 62% | 51.0% | 2.21 | 10:27 | 20.5 | 0% | 3,345 | 25.0 | 689 |
| 29 | Shadow Mewtwo psychicshadow Psycho Cut / Thunderbolt | Psycho Cut / Thunderbolt+23 more movesets | 62% | 50.9% | 2.22 | 10:29 | 18.4 | 0% | 4,178 | 24.8 | 770 |
| 30 | Shadow Vikavolt bugelectricshadow Volt Switch / Discharge | Volt Switch / Discharge+15 more movesets | 61% | 50.7% | 2.22 | 10:30 | 21.1 | 0% | 3,117 | 24.9 | 671 |
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%.
- 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 (its Shadow boss page; the ordinary boss's page is a different, easier fight). Boss-by-boss accuracy report.
Ranked 30 attackers in 1.1 s (50 Monte Carlo runs each, seed 1). Same boss on pokebattler.com. The same ranking as JSON: /api/raids/rank.