Shadow raid

Shadow Slowbro counters

#0080

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.

Lobby CP

6,567

600

Timer

3:00

Attack

114

Defense

116

Difficulty

0.11

Pokebattler scale

Beating Shadow Slowbro should take 1 trainer with level 40 counters. Caught CP 1,327-1,454.

Weak tobug1.6xghost1.6xgrass1.6xelectric1.6xdark1.6x

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 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 Shadow Slowbro counters are Mega Raichu X, Shadow Thundurus (Therian), Shadow Darkrai, Necrozma (Dawn Wings), Shadow Tyranitar & Kartana.

Suggested party of sixat most one Mega

M. Raichu X
S. Thundurus (Therian)
S. Darkrai
Necrozma (Dawn Wings)
S. Tyranitar
Kartana

11 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 XMegapartyThunder Shock / Volt Tackle+0.100:18
2Mega BeedrillMegaBug Bite / Fell Stinger+0.100:19
3Mega Raichu YMegaThunder Shock / Zap Cannon+0.110:19
4Mega HoundoomMegaSnarl / Dark Pulse+0.110:19
5Mega SceptileMegaFury Cutter / Frenzy Plant0.120:21
6Shadow Thundurus (Therian)ShadowLegendarypartyVolt Switch / Wildbolt Storm0.120:22
7Mega ChesnaughtMegaVine Whip / Seed Bomb+0.120:22
8Shadow DarkraiShadowLegendarypartySnarl / Foul Play0.130:23
9Mega HeracrossMegaFury Cutter / Megahorn0.130:23
10Mega GengarMegaShadow Claw / Shadow Ball0.130:24
11Necrozma (Dawn Wings)LegendarypartyMetal Claw / Moongeist Beam0.130:24
15Shadow TyranitarShadowpartyBite / Brutal Swing0.140:25
17KartanaLegendarypartyFury Cutter / Leaf Blade0.140:25

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 — Easy Shadow 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 countersGalarian Slowbro Mega Slowbro

Raid alerts…

Top 15 Shadow Slowbro 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 Xelectricjoint top pick	electricThunder ShockelectricVolt Tackle+	3,510	0:18	0.10	0.0	2358.8%
2	Mega Beedrillbugpoisonjoint top pick	bugBug BitebugFell Stinger+	3,383	0:19	0.10	0.1	2317.8%
3	Mega Raichu Yelectric	electricThunder ShockelectricZap Cannon+	3,780	0:19	0.11	0.0	2300.1%
4	Mega Houndoomdarkfire	darkSnarldarkDark Pulse+	3,842	0:19	0.11	0.0	2289.4%
5	Mega Sceptilegrassdragon	bugFury CuttergrassFrenzy Plant	4,056	0:21	0.12	0.1	2055.1%
6	Shadow Thundurus (Therian)electricflying	electricVolt SwitchelectricWildbolt Storm	3,659	0:22	0.12	0.1	2000.7%
7	Mega Chesnaughtgrassfighting	grassVine WhipgrassSeed Bomb+	4,093	0:22	0.12	0.0	1948.9%
8	Shadow Darkraidark	darkSnarldarkFoul Play	3,739	0:23	0.13	0.0	1888.6%
9	Mega Heracrossbugfighting	bugFury CutterbugMegahorn	4,814	0:23	0.13	0.1	1878.5%
10	Mega Gengarghostpoison	ghostShadow ClawghostShadow Ball	4,336	0:24	0.13	0.2	1817.8%
11	Necrozma (Dawn Wings)psychicghost	steelMetal ClawghostMoongeist Beam	4,099	0:24	0.13	0.0	1804.4%
12	Mega Mewtwo Ypsychic	psychicPsycho CutghostShadow Ball	6,428	0:24	0.14	0.0	1787.4%
13	Mega Banetteghost	ghostShadow ClawghostShadow Ball	3,594	0:25	0.14	0.3	1757.0%
14	Mega Absoldark	darkSnarldarkBrutal Swing	3,301	0:25	0.14	0.2	1750.7%
15	Shadow Tyranitarrockdark	darkBitedarkBrutal Swing	3,834	0:25	0.14	0.2	1746.9%

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 Slowbro.

Estimator is how many trainers of this strength the fight needs. Power is the share of Shadow Slowbro'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.

“Joint top pick”: 2 attackers inside 2.1% of each other — this simulator's own accuracy against pokebattler.com (median 1.6% per attacker), so any of them is the right answer.

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%	315%	1897.4%	0:23	0.1	0.13
Confusion / Ice Beam	100%	298%	1871.7%	0:23	0.2	0.13
Confusion / Drain Punch	100%	346%	1875.4%	0:23	0.2	0.13
Water Gun / Ice Beam	100%	313%	1876.3%	0:23	0.2	0.13
Confusion / Psychic	100%	337%	1876.6%	0:23	0.1	0.13
Water Gun / Drain Punch	100%	381%	1876.9%	0:23	0.1	0.13
Water Gun / Psychic	100%	344%	1890.3%	0:23	0.0	0.13
Water Gun / Water Pulse	100%	331%	1910.4%	0:23	0.0	0.13
Water Gun / Scald	100%	331%	1911.9%	0:23	0.0	0.13
Confusion / Water Pulse	100%	316%	1913.8%	0:23	0.1	0.13
Confusion / Scald	100%	309%	1917.2%	0:23	0.0	0.13

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…

Slowbro 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.

bug1.6x ghost1.6x grass1.6x electric1.6x dark1.6x normal1x flying1x poison1x ground1x rock1x dragon1x fairy1x fighting0.63x steel0.63x fire0.63x water0.63x psychic0.63x ice0.63x

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

It resists fighting0.625xsteel0.625xfire0.625xwater0.625xpsychic0.625xice0.625x— bringing one of those is throwing damage away.

What Slowbro throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
psychicConfusionSTAB	19	+14	1.5s	0.50s
waterWater GunSTAB	5	+5	0.5s	0.30s

Charged moves

Move	Power	Energy	Duration	Hits at
psychicPsychicSTAB	95	-50	3.0s	1.50s
iceIce Beam	95	-50	3.5s	1.50s
waterWater PulseSTAB	65	-50	3.0s	2.00s
waterScaldSTAB	75	-50	3.5s	1.10s
fightingDrain Punch	50	-33	2.5s	1.10s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
6/6/6floor	1,327	1,659
7/7/7	1,340	1,676
8/8/8	1,354	1,693
9/9/9	1,368	1,711
10/10/10	1,382	1,728
11/11/11	1,397	1,746
12/12/12	1,411	1,764
13/13/13	1,425	1,782
14/14/14	1,439	1,799
15/15/15hundo	1,454	1,817

Caught CP range 1,327 - 1,454, or 1,659 - 1,817 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 1,327, not at the 1,382 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 55 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.

Slowbro 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 1: 600 HP, 3:00 timer, boss Attack 114 / Defense 116 (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	Faints	Win % (1)	CP	DPS	TDO
1	Mega Raichu X top pickelectricmega Thunder Shock / Volt Tackle+	Thunder Shock / Volt Tackle++35 more movesets	100%	2358.8%	0.10	0:18	0.0	100%	3,510	33.4	617
2	Mega Beedrill top pickbugpoisonmega Bug Bite / Fell Stinger+	Bug Bite / Fell Stinger++23 more movesets	91%	2317.8%	0.10	0:19	0.1	100%	3,383	33.0	570
3	Mega Raichu Y electricmega Thunder Shock / Zap Cannon+	Thunder Shock / Zap Cannon++35 more movesets	95%	2300.1%	0.11	0:19	0.0	100%	3,780	37.4	700
4	Mega Houndoom darkfiremega Snarl / Dark Pulse+	Snarl / Dark Pulse++17 more movesets	99%	2289.4%	0.11	0:19	0.0	100%	3,842	33.6	638
5	Mega Sceptile grassdragonmega Fury Cutter / Frenzy Plant	Fury Cutter / Frenzy Plant+11 more movesets	84%	2055.1%	0.12	0:21	0.1	100%	4,056	28.9	592
6	Shadow Thundurus (Therian) electricflyingshadow Volt Switch / Wildbolt Storm	Volt Switch / Wildbolt Storm+9 more movesets	78%	2000.7%	0.12	0:22	0.1	100%	3,659	28.2	578
7	Mega Chesnaught grassfightingmega Vine Whip / Seed Bomb+	Vine Whip / Seed Bomb++20 more movesets	83%	1948.9%	0.12	0:22	0.0	100%	4,093	26.9	596
8	Shadow Darkrai darkshadow Snarl / Foul Play	Snarl / Foul Play+14 more movesets	76%	1888.6%	0.13	0:23	0.0	100%	3,739	26.1	591
9	Mega Heracross bugfightingmega Fury Cutter / Megahorn	Fury Cutter / Megahorn+17 more movesets	76%	1878.5%	0.13	0:23	0.1	100%	4,814	26.6	597
10	Mega Gengar ghostpoisonmega Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+31 more movesets	71%	1817.8%	0.13	0:24	0.2	100%	4,336	28.1	602
11	Necrozma (Dawn Wings) psychicghost Metal Claw / Moongeist Beam	Metal Claw / Moongeist Beam+14 more movesets	80%	1804.4%	0.13	0:24	0.0	100%	4,099	25.2	609
12	Mega Mewtwo Y psychicmega Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+26 more movesets	78%	1787.4%	0.14	0:24	0.0	100%	6,428	25.2	614
13	Mega Banette ghostmega Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+5 more movesets	68%	1757.0%	0.14	0:25	0.3	100%	3,594	24.7	526
14	Mega Absol darkmega Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	67%	1750.7%	0.14	0:25	0.2	100%	3,301	26.3	573
15	Shadow Tyranitar rockdarkshadow Bite / Brutal Swing	Bite / Brutal Swing+15 more movesets	69%	1746.9%	0.14	0:25	0.2	100%	3,834	25.1	576
16	Mega Mewtwo X psychicfightingmega Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+26 more movesets	73%	1738.9%	0.14	0:25	0.0	100%	6,112	24.1	605
17	Kartana grasssteel Fury Cutter / Leaf Blade	Fury Cutter / Leaf Blade+14 more movesets	67%	1713.2%	0.14	0:25	0.1	100%	3,677	25.1	612
18	Mega Tyranitar rockdarkmega Bite / Brutal Swing	Bite / Brutal Swing+15 more movesets	73%	1700.9%	0.14	0:26	0.0	100%	5,347	24.9	639
19	Shadow Hydreigon darkdragonshadow Bite / Brutal Swing	Bite / Brutal Swing+9 more movesets	70%	1688.7%	0.14	0:26	0.1	100%	3,625	25.0	620
20	Xurkitree electric Thunder Shock / Discharge	Thunder Shock / Discharge+7 more movesets	64%	1679.3%	0.14	0:26	0.2	100%	3,937	24.4	560
21	Shadow Giratina (Origin) ghostdragonshadow Shadow Claw / Shadow Force	Shadow Claw / Shadow Force+7 more movesets	70%	1675.4%	0.15	0:26	0.1	100%	3,683	23.4	583
22	Shadow Gengar ghostpoisonshadow Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+31 more movesets	60%	1669.6%	0.15	0:26	0.7	100%	2,878	24.1	406
23	Shadow Absol darkshadow Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	60%	1665.5%	0.15	0:26	0.6	100%	2,526	24.0	422
24	Shadow Sceptile grassshadow Fury Cutter / Frenzy Plant	Fury Cutter / Frenzy Plant+11 more movesets	63%	1657.0%	0.15	0:26	0.3	100%	2,757	24.5	551
25	Zekrom dragonelectric Charge Beam / Fusion Bolt	Charge Beam / Fusion Bolt+9 more movesets	68%	1649.8%	0.15	0:26	0.0	100%	4,038	23.5	606
26	Zeraora electric Volt Switch / Plasma Fists	Volt Switch / Plasma Fists+9 more movesets	66%	1640.7%	0.15	0:27	0.0	100%	3,419	24.4	649
27	Darkrai dark Snarl / Foul Play	Snarl / Foul Play+14 more movesets	66%	1633.9%	0.15	0:27	0.0	100%	3,739	22.9	612
28	Shadow Raikou electricshadow Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	64%	1616.6%	0.15	0:27	0.1	100%	3,452	24.4	624
29	Shadow Weavile darkiceshadow Snarl / Foul Play	Snarl / Foul Play+11 more movesets	61%	1614.7%	0.15	0:27	0.3	100%	3,005	23.0	522
30	Shadow Vikavolt bugelectricshadow Bug Bite / X-Scissor	Bug Bite / X-Scissor+15 more movesets	60%	1613.6%	0.15	0:27	0.5	100%	3,117	22.6	462

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 (its Shadow boss page; the ordinary boss's page is a different, easier fight). 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.