Shadow raid

Shadow Walrein counters

#0365

ice waterShadow 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

6,668

600

Timer

3:00

Attack

117

Defense

114

Difficulty

0.11

Pokebattler scale

Beating Shadow Walrein should take 1 trainer with level 40 counters. Caught CP 1,425-1,557.

Weak tofighting1.6xrock1.6xgrass1.6xelectric1.6x

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 Fighting Mega — most top counters attack with Fighting

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 Walrein counters are Mega Mewtwo X, Shadow Thundurus (Therian), Keldeo, Regieleki, Shadow Blaziken & Shadow Raikou.

Suggested party of sixat most one Mega

M. Mewtwo X
S. Thundurus (Therian)
Keldeo
Regieleki
S. Blaziken
S. Raikou

9 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 XMegaLegendarypartyPsycho Cut / Dynamic Punch+0.090:16
2Mega Raichu XMegaThunder Shock / Volt Tackle+0.100:18
3Mega LucarioMegaForce Palm / Aura Sphere0.100:18
4Mega BlazikenMegaCounter / Aura Sphere0.110:20
5Mega Raichu YMegaThunder Shock / Zap Cannon+0.120:21
6Mega FalinksMegaCounter / Brick Break+0.120:21
7Shadow Thundurus (Therian)ShadowLegendarypartyVolt Switch / Wildbolt Storm0.120:22
8Mega ChesnaughtMegaVine Whip / Seed Bomb+0.120:22
9Mega GalladeMegaLow Kick / Sacred Sword0.120:22
10Mega Mewtwo YMegaLegendaryCounter / Future Sight+0.130:23
12KeldeoLegendarypartyLow Kick / Secret Sword0.140:25
13RegielekiLegendarypartyThunder Shock / Thunder Cage0.140:25
14Shadow BlazikenShadowpartyCounter / Aura Sphere0.140:25
15Shadow RaikouShadowLegendarypartyThunder Shock / Aura Sphere0.140:25

More orders under All settings (Sort by). The top 15 in detail.

Build and order a party of six →Plan your raid lobby →

Best from your Pokebox

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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

Raid alerts…

Top 15 Shadow Walrein 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 Xpsychicfightingjoint top pick	psychicPsycho CutfightingDynamic Punch+	6,112	0:16	0.09	0.0	2646.6%
2	Mega Raichu Xelectric	electricThunder ShockelectricVolt Tackle+	3,510	0:18	0.10	0.0	2366.4%
3	Mega Lucariofightingsteel	fightingForce PalmfightingAura Sphere	3,826	0:18	0.10	0.0	2356.5%
4	Mega Blazikenfirefighting	fightingCounterfightingAura Sphere	4,161	0:20	0.11	0.2	2195.4%
5	Mega Raichu Yelectric	electricThunder ShockelectricZap Cannon+	3,780	0:21	0.12	0.3	2056.3%
6	Mega Falinksfighting	fightingCounterfightingBrick Break+	3,670	0:21	0.12	0.0	2035.0%
7	Shadow Thundurus (Therian)electricflying	electricVolt SwitchelectricWildbolt Storm	3,659	0:22	0.12	0.2	2007.5%
8	Mega Chesnaughtgrassfighting	grassVine WhipgrassSeed Bomb+	4,093	0:22	0.12	0.0	1986.7%
9	Mega Galladepsychicfighting	fightingLow KickfightingSacred Sword	4,521	0:22	0.12	0.0	1969.0%
10	Mega Mewtwo Ypsychic	fightingCounterpsychicFuture Sight+	6,428	0:23	0.13	0.0	1932.2%
11	Mega Heracrossbugfighting	fightingCounterfightingClose Combat	4,814	0:24	0.14	0.0	1795.5%
12	Keldeowaterfighting	fightingLow KickfightingSecret Sword	3,698	0:25	0.14	0.0	1777.9%
13	Regielekielectric	electricThunder ShockelectricThunder Cage	2,803	0:25	0.14	0.4	1777.5%
14	Shadow Blazikenfirefighting	fightingCounterfightingAura Sphere	2,848	0:25	0.14	0.9	1762.7%
15	Shadow Raikouelectric	electricThunder ShockfightingAura Sphere	3,452	0:25	0.14	0.2	1754.6%

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 Walrein.

Estimator is how many trainers of this strength the fight needs. Power is the share of Shadow Walrein'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%	311%	1920.3%	0:23	0.3	0.13
Waterfall / Blizzard	100%	298%	1884.9%	0:23	0.4	0.13
Frost Breath / Blizzard	100%	307%	1894.7%	0:23	0.3	0.13
Frost Breath / Earthquake	100%	294%	1895.4%	0:23	0.4	0.13
Waterfall / Earthquake	100%	294%	1903.4%	0:23	0.4	0.13
Waterfall / Water Pulse	100%	350%	1964.9%	0:22	0.2	0.12
Frost Breath / Water Pulse	100%	352%	1967.8%	0:22	0.1	0.12

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…

Walrein 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.

fighting1.6x rock1.6x grass1.6x electric1.6x normal1x flying1x poison1x ground1x bug1x ghost1x steel1x fire1x psychic1x dragon1x dark1x fairy1x water0.63x ice0.39x

Weak (4)
Neutral (12)
Resists (2)

It resists ice0.39xwater0.625x— bringing one of those is throwing damage away.

What Walrein 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
iceFrost BreathSTAB	11	+9	1.0s	0.55s

Charged moves

Move	Power	Energy	Duration	Hits at
iceBlizzardSTAB	130	-100	3.0s	1.40s
groundEarthquake	140	-100	3.5s	2.60s
waterWater PulseSTAB	65	-50	3.0s	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	1,425	1,781
7/7/7	1,439	1,799
8/8/8	1,454	1,818
9/9/9	1,468	1,836
10/10/10	1,483	1,854
11/11/11	1,498	1,872
12/12/12	1,512	1,891
13/13/13	1,527	1,909
14/14/14	1,542	1,928
15/15/15hundo	1,557	1,947

Caught CP range 1,425 - 1,557, or 1,781 - 1,947 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 1,425, not at the 1,483 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 58 CP higher than this one.

When it is in raids

From the raid schedule, refreshed daily.

Walrein 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 117 / Defense 114 (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 Mewtwo X psychicfightingmega Psycho Cut / Dynamic Punch+	Psycho Cut / Dynamic Punch++26 more movesets	100%	2646.6%	0.09	0:16	0.0	100%	6,112	39.1	644
2	Mega Raichu X electricmega Thunder Shock / Volt Tackle+	Thunder Shock / Volt Tackle++35 more movesets	80%	2366.4%	0.10	0:18	0.0	100%	3,510	34.0	626
3	Mega Lucario fightingsteelmega Force Palm / Aura Sphere	Force Palm / Aura Sphere+23 more movesets	79%	2356.5%	0.10	0:18	0.0	100%	3,826	34.3	633
4	Mega Blaziken firefightingmega Counter / Aura Sphere	Counter / Aura Sphere+20 more movesets	71%	2195.4%	0.11	0:20	0.2	100%	4,161	31.5	565
5	Mega Raichu Y electricmega Thunder Shock / Zap Cannon+	Thunder Shock / Zap Cannon++35 more movesets	68%	2056.3%	0.12	0:21	0.3	100%	3,780	35.7	630
6	Mega Falinks fightingmega Counter / Brick Break+	Counter / Brick Break++7 more movesets	71%	2035.0%	0.12	0:21	0.0	100%	3,670	33.3	712
7	Shadow Thundurus (Therian) electricflyingshadow Volt Switch / Wildbolt Storm	Volt Switch / Wildbolt Storm+9 more movesets	65%	2007.5%	0.12	0:22	0.2	100%	3,659	29.5	550
8	Mega Chesnaught grassfightingmega Vine Whip / Seed Bomb+	Vine Whip / Seed Bomb++20 more movesets	73%	1986.7%	0.12	0:22	0.0	100%	4,093	27.7	608
9	Mega Gallade psychicfightingmega Low Kick / Sacred Sword	Low Kick / Sacred Sword+19 more movesets	66%	1969.0%	0.12	0:22	0.0	100%	4,521	27.8	616
10	Mega Mewtwo Y psychicmega Counter / Future Sight+	Counter / Future Sight++26 more movesets	69%	1932.2%	0.13	0:23	0.0	100%	6,428	31.7	715
11	Mega Heracross bugfightingmega Counter / Close Combat	Counter / Close Combat+17 more movesets	61%	1795.5%	0.14	0:24	0.0	100%	4,814	25.8	627
12	Keldeo waterfighting Low Kick / Secret Sword	Low Kick / Secret Sword+11 more movesets	63%	1777.9%	0.14	0:25	0.0	100%	3,698	28.7	702
13	Regieleki electric Thunder Shock / Thunder Cage	Thunder Shock / Thunder Cage+11 more movesets	55%	1777.5%	0.14	0:25	0.3	100%	2,803	25.1	500
14	Shadow Blaziken firefightingshadow Counter / Aura Sphere	Counter / Aura Sphere+20 more movesets	52%	1762.7%	0.14	0:25	0.9	100%	2,848	25.8	387
15	Shadow Raikou electricshadow Thunder Shock / Aura Sphere	Thunder Shock / Aura Sphere+9 more movesets	56%	1754.6%	0.14	0:25	0.2	100%	3,452	25.7	556
16	Mega Sceptile grassdragonmega Bullet Seed / Frenzy Plant	Bullet Seed / Frenzy Plant+11 more movesets	56%	1744.9%	0.14	0:25	0.4	100%	4,056	25.9	531
17	Lucario fightingsteel Force Palm / Aura Sphere	Force Palm / Aura Sphere+23 more movesets	53%	1720.5%	0.14	0:25	0.4	100%	2,703	24.9	485
18	Mega Diancie rockfairymega Rock Throw / Rock Slide	Rock Throw / Rock Slide+5 more movesets	52%	1697.8%	0.14	0:26	0.5	100%	4,346	24.1	461
19	Shadow Gallade psychicfightingshadow Low Kick / Sacred Sword	Low Kick / Sacred Sword+19 more movesets	53%	1687.3%	0.14	0:26	0.3	100%	3,093	24.2	507
20	Kartana grasssteel Fury Cutter / Leaf Blade	Fury Cutter / Leaf Blade+14 more movesets	53%	1680.0%	0.14	0:26	0.2	100%	3,677	23.3	530
21	Shadow Conkeldurr fightingshadow Counter / Dynamic Punch	Counter / Dynamic Punch+11 more movesets	53%	1674.3%	0.15	0:26	0.2	100%	3,337	24.5	561
22	Shadow Rampardos rockshadow Smack Down / Rock Slide	Smack Down / Rock Slide+5 more movesets	48%	1670.3%	0.15	0:26	1.1	100%	3,298	24.1	309
23	Shadow Mewtwo psychicshadow Counter / Thunderbolt	Counter / Thunderbolt+23 more movesets	51%	1626.4%	0.15	0:27	0.3	100%	4,178	23.7	537
24	Mega Tyranitar rockdarkmega Smack Down / Stone Edge	Smack Down / Stone Edge+15 more movesets	53%	1613.4%	0.15	0:27	0.0	100%	5,347	23.5	634
25	Xurkitree electric Thunder Shock / Power Whip	Thunder Shock / Power Whip+7 more movesets	49%	1591.9%	0.15	0:27	0.5	100%	3,937	24.0	499
26	Mega Alakazam psychicmega Counter / Focus Blast	Counter / Focus Blast+17 more movesets	50%	1591.4%	0.15	0:27	0.2	100%	4,510	23.3	558
27	Zekrom dragonelectric Charge Beam / Fusion Bolt	Charge Beam / Fusion Bolt+9 more movesets	52%	1588.6%	0.15	0:27	0.2	100%	4,038	23.3	553
28	Shadow Chesnaught grassfightingshadow Vine Whip / Frenzy Plant	Vine Whip / Frenzy Plant+17 more movesets	50%	1585.7%	0.15	0:27	0.2	100%	2,954	22.1	533
29	Shadow Machamp fightingshadow Counter / Dynamic Punch	Counter / Dynamic Punch+23 more movesets	49%	1572.8%	0.15	0:28	0.4	100%	3,056	23.1	496
30	Mega Rayquaza dragonflyingmega Dragon Tail / Dragon Ascent	Dragon Tail / Dragon Ascent+11 more movesets	51%	1571.0%	0.15	0:28	0.3	100%	5,713	22.8	551

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