Is Serperior viable in Gen 9 National Dex?

Serperior is ranked #78 in Gen 9 National Dex with 1.59% usage according to Smogon May 2026 - Jul 2026 data.

What beats Serperior in Gen 9 National Dex?

Kingambit has the strongest conservative score in this observed May 2026 - Jul 2026 sample. The target was knocked out or switched out in 69.4% of 21.27135401830716 relevant encounters. Standard error is 10.0 points. Sets and switch conditions can change the result.

How are Serperior 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 Serperior was knocked out or switched out. This is not a set-specific battle guarantee.

Serperior counters

Gen 9 National Dex · Sorted by p − 4 standard errors · Smogon source period May 2026 - Jul 2026 · Generated 2026-08-05

#0497 Serperior

Grass

USAGE 1.6% #78

ABILITYContrary

BASE STATS

HP 75

ATK 75

DEF 95

SPA 75

SPD 95

SPE 113

BST528

TYPE MATCHUPS

2×

FireIcePoisonFlyingBug

½×

WaterElectricGrassGround

Moves

Leaf Storm 99.9% Substitute 79.2% Glare 73.4% Hidden Power Fire 54.8% Leech Seed 27.9% Dragon Pulse 26.1% Hidden Power Rock 11.3% Defog 7.9%

Items

Leftovers 82.1% Choice Scarf 3.4% Heavy-Duty Boots 2.3% Coba Berry 1.8% Normalium Z 1.7% Choice Specs 1.5% Rocky Helmet 1.4% Grassium Z 1.4%

Abilities

Contrary99.8%Overgrow0.2%

Common Teammates

Bisharp19.1%

Hippowdon19.1%

Grimmsnarl18.8%

Kommo-o18.7%

Leading observed checks

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

Team core to explore

Serperior + Volcarona 27.9% 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

Kingambit

DarkSteel DEFENSIVE CHECK View matchup

21.271

29.4

69.4% Standard error 10.00 points

DAMAGE CALC

252+ SpA Serperior Hidden Power Fire vs. 252 HP / 252+ SpD Kingambit: 80-96 (19.8 - 23.7%) -- possible 5HKO

View Kingambit counters → Teams with Kingambit →

Gholdengo

SteelGhost SOFT CHECK View matchup

26.483

13.4

52.3% Standard error 9.71 points

DAMAGE CALC

252+ SpA Gholdengo Make It Rain vs. 252 HP / 252+ SpD Serperior: 163-193 (46 - 54.5%) -- 7.4% chance to 2HKO after Leftovers recovery

View Gholdengo counters → Teams with Gholdengo →

Alomomola

Water SOFT CHECK View matchup

23.993

-8.8

1.7% Standard error 2.61 points

DAMAGE CALC

252+ Atk Alomomola Knock Off (97.5 BP) vs. 252 HP / 0 Def Serperior: 85-100 (24 - 28.2%) -- 96.4% chance to 4HKO

View Alomomola counters → Teams with Alomomola →

Ogerpon-Wellspring

GrassWater SOFT CHECK View matchup

32.793

-9.4

16.6% Standard error 6.50 points

DAMAGE CALC

252+ Atk Wellspring Mask Ogerpon-Wellspring U-turn vs. 252 HP / 0 Def Serperior: 200-236 (56.4 - 66.6%) -- guaranteed 2HKO after Leftovers recovery

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

Landorus-Therian

GroundFlying SOFT CHECK View matchup

34.378

-10.4

7.1% Standard error 4.38 points

DAMAGE CALC

252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Serperior: 338-398 (95.4 - 112.4%) -- 75% chance to OHKO

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

Gliscor

GroundFlying SOFT CHECK View matchup

47.469

-14.6

9.8% Standard error 6.11 points

DAMAGE CALC

252+ Atk Gliscor Knock Off (97.5 BP) vs. 252 HP / 0 Def Serperior: 98-116 (27.6 - 32.7%) -- guaranteed 4HKO

View Gliscor counters → Teams with Gliscor →

Ranked #78 with 1.59% usage. Sorted by conservative score.