Shadow raid

Shadow Duosion counters

#0578

psychicShadow Tier 1

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

5,933

600

Timer

3:00

Attack

133

Defense

Difficulty

0.08

Pokebattler scale

Beating Shadow Duosion should take 1 trainer with level 40 counters. Caught CP 1,036-1,153.

Weak tobug1.6xghost1.6xdark1.6x

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 a Ghost Mega — most top counters attack with Ghost

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 Duosion counters are Mega Gengar, Necrozma (Dawn Wings), Shadow Darkrai, Shadow Hydreigon, Shadow Absol & Shadow Tyranitar.

Suggested party of sixat most one Mega

M. Gengar
Necrozma (Dawn Wings)
S. Darkrai
S. Hydreigon
S. Absol
S. Tyranitar

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 GengarMegapartyLick / Shadow Ball0.070:13
2Necrozma (Dawn Wings)LegendarypartyShadow Claw / Moongeist Beam0.080:14
3Mega HoundoomMegaSnarl / Dark Pulse+0.080:14
4Mega BeedrillMegaBug Bite / Fell Stinger+0.080:14
5Mega AbsolMegaSnarl / Brutal Swing0.080:15
6Mega HeracrossMegaFury Cutter / Megahorn0.090:16
7Mega BanetteMegaShadow Claw / Shadow Ball0.090:16
8Shadow DarkraiShadowLegendarypartyFeint Attack / Shadow Ball0.090:16
9Shadow HydreigonShadowpartyBite / Brutal Swing0.090:16
10Shadow AbsolShadowpartySnarl / Brutal Swing0.090:16
11Shadow TyranitarShadowpartyBite / Brutal Swing0.090:16

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 — 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

Raid alerts…

Top 15 Shadow Duosion 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 Gengarghostpoisonjoint top pick	ghostLickghostShadow Ball	4,336	0:13	0.07	0.0	3300.3%
2	Necrozma (Dawn Wings)psychicghost	ghostShadow ClawghostMoongeist Beam	4,099	0:14	0.08	0.0	3114.0%
3	Mega Houndoomdarkfire	darkSnarldarkDark Pulse+	3,842	0:14	0.08	0.0	3114.0%
4	Mega Beedrillbugpoison	bugBug BitebugFell Stinger+	3,383	0:14	0.08	0.1	3093.9%
5	Mega Absoldark	darkSnarldarkBrutal Swing	3,301	0:15	0.08	0.0	2861.9%
6	Mega Heracrossbugfighting	bugFury CutterbugMegahorn	4,814	0:16	0.09	0.0	2810.8%
7	Mega Banetteghost	ghostShadow ClawghostShadow Ball	3,594	0:16	0.09	0.0	2810.8%
8	Shadow Darkraidark	darkFeint AttackghostShadow Ball	3,739	0:16	0.09	0.0	2724.7%
9	Shadow Hydreigondarkdragon	darkBitedarkBrutal Swing	3,625	0:16	0.09	0.0	2721.3%
10	Shadow Absoldark	darkSnarldarkBrutal Swing	2,526	0:16	0.09	0.0	2712.3%
11	Shadow Tyranitarrockdark	darkBitedarkBrutal Swing	3,834	0:16	0.09	0.0	2694.4%
12	Shadow Weaviledarkice	darkSnarldarkFoul Play	3,005	0:16	0.09	0.0	2687.8%
13	Shadow Chandelureghostfire	fireFire SpinghostShadow Ball	3,268	0:16	0.09	0.1	2672.3%
14	Shadow Gengarghostpoison	ghostLickghostShadow Ball	2,878	0:16	0.09	0.5	2644.2%
15	Darkraidark	darkSnarldarkFoul Play	3,739	0:17	0.09	0.0	2626.2%

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 Duosion.

Estimator is how many trainers of this strength the fight needs. Power is the share of Shadow Duosion'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%	542%	2870.5%	0:15	0.08
Zen Headbutt / Psyshock	100%	592%	2818.9%	0:15	0.09
Hidden Power / Psyshock	100%	578%	2834.2%	0:15	0.09
Zen Headbutt / Night Shade	100%	553%	2843.2%	0:15	0.09
Zen Headbutt / Thunder	100%	511%	2843.9%	0:15	0.09
Hidden Power / Night Shade	100%	519%	2875.8%	0:15	0.08
Hidden Power / Thunder	100%	533%	2897.0%	0:15	0.08

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…

Duosion 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 dark1.6x normal1x flying1x poison1x ground1x rock1x steel1x fire1x water1x grass1x electric1x ice1x dragon1x fairy1x fighting0.63x psychic0.63x

Weak (3)
Neutral (13)
Resists (2)

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

What Duosion throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
psychicZen HeadbuttSTAB	11	+9	1.0s	0.75s
normalHidden Power	15	+15	1.5s	1.10s

Charged moves

Move	Power	Energy	Duration	Hits at
electricThunder	100	-100	2.5s	1.30s
psychicPsyshockSTAB	60	-33	2.5s	1.80s
ghostNight Shade	60	-50	2.5s	2.00s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
6/6/6floor	1,036	1,295
7/7/7	1,049	1,311
8/8/8	1,062	1,327
9/9/9	1,074	1,343
10/10/10	1,087	1,359
11/11/11	1,100	1,376
12/12/12	1,113	1,392
13/13/13	1,126	1,408
14/14/14	1,140	1,425
15/15/15hundo	1,153	1,441

Caught CP range 1,036 - 1,153, or 1,295 - 1,441 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 1,036, not at the 1,087 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 51 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.

Duosion 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 133 / Defense 70 (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 Gengar ghostpoisonmega Lick / Shadow Ball	Lick / Shadow Ball+31 more movesets	97%	3300.3%	0.07	0:13	0.0	100%	4,336	47.1	621
2	Necrozma (Dawn Wings) psychicghost Shadow Claw / Moongeist Beam	Shadow Claw / Moongeist Beam+14 more movesets	100%	3114.0%	0.08	0:14	0.0	100%	4,099	47.0	656
3	Mega Houndoom darkfiremega Snarl / Dark Pulse+	Snarl / Dark Pulse++17 more movesets	100%	3114.0%	0.08	0:14	0.0	100%	3,842	42.9	601
4	Mega Beedrill bugpoisonmega Bug Bite / Fell Stinger+	Bug Bite / Fell Stinger++23 more movesets	85%	3093.9%	0.08	0:14	0.1	100%	3,383	42.7	577
5	Mega Absol darkmega Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	84%	2861.9%	0.08	0:15	0.0	100%	3,301	42.0	634
6	Mega Heracross bugfightingmega Fury Cutter / Megahorn	Fury Cutter / Megahorn+17 more movesets	84%	2810.8%	0.09	0:16	0.0	100%	4,814	42.5	659
7	Mega Banette ghostmega Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+5 more movesets	80%	2810.8%	0.09	0:16	0.0	100%	3,594	42.1	651
8	Shadow Darkrai darkshadow Feint Attack / Shadow Ball	Feint Attack / Shadow Ball+14 more movesets	84%	2724.7%	0.09	0:16	0.0	100%	3,739	38.8	620
9	Shadow Hydreigon darkdragonshadow Bite / Brutal Swing	Bite / Brutal Swing+9 more movesets	86%	2721.3%	0.09	0:16	0.0	100%	3,625	39.4	630
10	Shadow Absol darkshadow Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	77%	2712.3%	0.09	0:16	0.0	100%	2,526	42.5	674
11	Shadow Tyranitar rockdarkshadow Bite / Brutal Swing	Bite / Brutal Swing+15 more movesets	86%	2694.4%	0.09	0:16	0.0	100%	3,834	38.9	628
12	Shadow Weavile darkiceshadow Snarl / Foul Play	Snarl / Foul Play+11 more movesets	80%	2687.8%	0.09	0:16	0.0	100%	3,005	38.0	617
13	Shadow Chandelure ghostfireshadow Fire Spin / Shadow Ball	Fire Spin / Shadow Ball+19 more movesets	73%	2672.3%	0.09	0:16	0.1	100%	3,268	37.3	590
14	Shadow Gengar ghostpoisonshadow Lick / Shadow Ball	Lick / Shadow Ball+31 more movesets	69%	2644.2%	0.09	0:16	0.5	100%	2,878	38.0	458
15	Darkrai dark Snarl / Foul Play	Snarl / Foul Play+14 more movesets	81%	2626.2%	0.09	0:17	0.0	100%	3,739	36.9	613
16	Mega Tyranitar rockdarkmega Bite / Brutal Swing	Bite / Brutal Swing+15 more movesets	89%	2591.9%	0.09	0:17	0.0	100%	5,347	38.7	650
17	Mega Rayquaza dragonflyingmega Air Slash / Dragon Ascent	Air Slash / Dragon Ascent+11 more movesets	77%	2505.5%	0.10	0:17	0.0	100%	5,713	35.6	620
18	Shadow Mewtwo psychicshadow Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+23 more movesets	72%	2467.2%	0.10	0:18	0.0	100%	4,178	36.9	651
19	Mega Pinsir bugflyingmega Fury Cutter / X-Scissor	Fury Cutter / X-Scissor+14 more movesets	70%	2462.9%	0.10	0:18	0.1	100%	4,182	34.6	587
20	Shadow Giratina (Origin) ghostdragonshadow Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+7 more movesets	75%	2450.5%	0.10	0:18	0.0	100%	3,683	35.4	631
21	Shadow Vikavolt bugelectricshadow Bug Bite / X-Scissor	Bug Bite / X-Scissor+15 more movesets	67%	2436.7%	0.10	0:18	0.0	100%	3,117	36.6	642
22	Mega Mewtwo X psychicfightingmega Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+26 more movesets	75%	2424.6%	0.10	0:18	0.0	100%	6,112	40.9	735
23	Mega Mewtwo Y psychicmega Confusion / Shadow Ball	Confusion / Shadow Ball+26 more movesets	75%	2421.9%	0.10	0:18	0.0	100%	6,428	33.7	606
24	Shadow Salamence dragonflyingshadow Bite / Brutal Swing	Bite / Brutal Swing+20 more movesets	69%	2415.2%	0.10	0:18	0.0	100%	3,749	36.7	663
25	Shadow Houndoom darkfireshadow Snarl / Foul Play	Snarl / Foul Play+14 more movesets	68%	2398.9%	0.10	0:18	0.0	100%	2,635	34.2	610
26	Mega Alakazam psychicmega Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+17 more movesets	70%	2398.0%	0.10	0:18	0.0	100%	4,510	36.4	661
27	Absol dark Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	67%	2391.2%	0.10	0:18	0.1	100%	2,526	33.4	584
28	Hisuian Zoroark normalghost Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+9 more movesets	65%	2380.5%	0.10	0:18	0.2	100%	2,615	33.2	553
29	Shadow Alakazam psychicshadow Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+17 more movesets	62%	2346.7%	0.10	0:19	0.1	100%	3,057	32.6	566
30	Shadow Hisuian Typhlosion fireghostshadow Hex / Shadow Ball	Hex / Shadow Ball+9 more movesets	65%	2339.3%	0.10	0:19	0.1	100%	2,994	37.9	681

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.