Is Hydreigon viable in Gen 9 National Dex?

Hydreigon is ranked #71 in Gen 9 National Dex with 2.10% usage according to Smogon Jul 2026 - Sep 2026 data.

What beats Hydreigon in Gen 9 National Dex?

Iron Valiant has the strongest conservative score in this observed Jul 2026 - Sep 2026 sample. The target was knocked out or switched out in 75.0% of 20.999298405469144 relevant encounters. Standard error is 9.4 points. Sets and switch conditions can change the result.

How are Hydreigon matchup checks ranked in Gen 9 National Dex?

They are ranked by p minus four standard errors. Here, p is the observed fraction of relevant encounters where Hydreigon was knocked out or switched out. This is not a set-specific battle guarantee.

Hydreigon counters

Gen 9 National Dex · Smogon source period Jul 2026 - Sep 2026

#0635 Hydreigon

DarkDragon

USAGE 2.1% #71

ABILITYLevitate

BASE STATS

HP 92

ATK 105

DEF 90

SPA 125

SPD 90

SPE 98

BST600

TYPE MATCHUPS

4×

Fairy

2×

IceFightingBugDragon

½×

FireWaterElectricGrassGhostDark

0×

Psychic

Moves

Dark Pulse 98.8% Draco Meteor 91.7% U-turn 82.6% Fire Blast 73.8% Earth Power 14.9% Roost 8.7% Nasty Plot 5.2% Flash Cannon 4.7%

Items

Choice Scarf 80.2% Choice Specs 7.0% Life Orb 3.0% Groundium Z 3.0% Dragonium Z 2.3% Leftovers 2.0% Darkinium Z 1.3% Scope Lens 0.3%

Abilities

Levitate100.0%

Common Teammates

Leading observed checks

Open a matchup for a separate set-based damage estimate, or browse uploaded teams with both Pokémon.

Team core to explore

Hydreigon + Slowbro 67.9% teammate usage Explore teams →

Checks & Counters

Observed target KO or switch rate is upstream p: the fraction of relevant encounters where the target was knocked out or switched out. Standard error is upstream d. The conservative score is p − 4d. These ladder observations do not prove a set-specific counter.

How to read this table

Use encounter count and standard error to judge the sample. Damage estimates below use inferred sets and remain separate from the observed ladder metric.

# Checker Encounters Conservative score Target KO or switch rate

Iron Valiant

FairyFighting OFFENSIVE CHECK View matchup

20.999

37.2

75.0% Standard error 9.45 points

DAMAGE CALC

252+ SpA Iron Valiant Moonblast vs. 252 HP / 252+ SpD Hydreigon: 504-592 (129.8 - 152.5%) -- guaranteed OHKO

View Iron Valiant counters → Teams with Iron Valiant →

Kyurem

DragonIce OFFENSIVE CHECK View matchup

22.423

33.9

71.9% Standard error 9.49 points

DAMAGE CALC

252+ SpA Kyurem Ice Beam vs. 252 HP / 252+ SpD Hydreigon: 252-296 (64.9 - 76.2%) -- guaranteed 2HKO

View Kyurem counters → Teams with Kyurem →

Diancie-Mega

RockFairy OFFENSIVE CHECK View matchup

24.193

32.6

69.9% Standard error 9.33 points

DAMAGE CALC

252+ SpA Diancie-Mega Moonblast vs. 252 HP / 252+ SpD Hydreigon: 612-724 (157.7 - 186.5%) -- guaranteed OHKO

View Diancie-Mega counters → Teams with Diancie-Mega →

Charizard-Mega-Y

FireFlying OFFENSIVE CHECK View matchup

29.33

26.1

62.0% Standard error 8.96 points

DAMAGE CALCSun

252+ SpA Charizard-Mega-Y Focus Blast vs. 252 HP / 252+ SpD Hydreigon: 258-304 (66.4 - 78.3%) -- guaranteed 2HKO

View Charizard-Mega-Y counters →

Zamazenta

Fighting OFFENSIVE CHECK View matchup

23.377

24.7

64.3% Standard error 9.91 points

DAMAGE CALC

252+ Atk Zamazenta Close Combat vs. 252 HP / 0 Def Hydreigon: 444-524 (114.4 - 135%) -- guaranteed OHKO

View Zamazenta counters → Teams with Zamazenta →

Tapu Lele

PsychicFairy OFFENSIVE CHECK View matchup

23.195

22.1

62.4% Standard error 10.06 points

DAMAGE CALCPsychic Terrain

252+ SpA Tapu Lele Moonblast vs. 252 HP / 252+ SpD Hydreigon: 528-624 (136 - 160.8%) -- guaranteed OHKO

View Tapu Lele counters → Teams with Tapu Lele →

Ogerpon-Wellspring

GrassWater SOFT CHECK View matchup

31.489

13.6

49.2% Standard error 8.91 points

DAMAGE CALC

252+ Atk Wellspring Mask Ogerpon-Wellspring Play Rough vs. 252 HP / 0 Def Hydreigon: 536-632 (138.1 - 162.8%) -- guaranteed OHKO

View Ogerpon-Wellspring counters → Teams with Ogerpon-Wellspring →

Kingambit

DarkSteel SOFT CHECK View matchup

23.414

5.6

46.9% Standard error 10.31 points

DAMAGE CALC

252+ Atk Kingambit Low Kick (100 BP) vs. 252 HP / 0 Def Hydreigon: 270-318 (69.5 - 81.9%) -- guaranteed 2HKO

View Kingambit counters → Teams with Kingambit →

Raging Bolt

ElectricDragon SOFT CHECK View matchup

23.309

0.4

41.2% Standard error 10.19 points

DAMAGE CALC

252+ SpA Choice Specs Raging Bolt Draco Meteor vs. 252 HP / 252+ SpD Hydreigon: 560-662 (144.3 - 170.6%) -- guaranteed OHKO

View Raging Bolt counters → Teams with Raging Bolt →

Garchomp

DragonGround SOFT CHECK View matchup

22.888

-0.1

41.0% Standard error 10.28 points

DAMAGE CALC

252+ Atk Garchomp Outrage vs. 252 HP / 0 Def Hydreigon: 470-554 (121.1 - 142.7%) -- guaranteed OHKO

View Garchomp counters → Teams with Garchomp →

Gholdengo

SteelGhost SOFT CHECK View matchup

38.722

-0.5

28.5% Standard error 7.25 points

DAMAGE CALC

252+ SpA Gholdengo Focus Blast vs. 252 HP / 252+ SpD Hydreigon: 226-268 (58.2 - 69%) -- guaranteed 2HKO

View Gholdengo counters → Teams with Gholdengo →

Alomomola

Water SOFT CHECK View matchup

38.609

-6.5

18.6% Standard error 6.26 points

DAMAGE CALC

252+ Atk Alomomola Liquidation vs. 252 HP / 0 Def Hydreigon: 58-69 (14.9 - 17.7%) -- possible 6HKO

View Alomomola counters → Teams with Alomomola →

Landorus-Therian

GroundFlying SOFT CHECK View matchup

30.95

-11.3

6.8% Standard error 4.54 points

DAMAGE CALC

252+ Atk Landorus-Therian U-turn vs. 252 HP / 0 Def Hydreigon: 200-236 (51.5 - 60.8%) -- guaranteed 2HKO

View Landorus-Therian counters → Teams with Landorus-Therian →

Zapdos

ElectricFlying SOFT CHECK View matchup

22.872

-13.3

20.3% Standard error 8.41 points

DAMAGE CALC

252+ SpA Zapdos Hurricane vs. 252 HP / 252+ SpD Hydreigon: 148-175 (38.1 - 45.1%) -- guaranteed 3HKO

View Zapdos counters → Teams with Zapdos →

Ranked #71 with 2.10% usage. Sorted by conservative score.