Is Serperior viable in Gen 6 OU?

Serperior is ranked #8 in Gen 6 OU with 17.62% usage according to Smogon Feb 2026 - Apr 2026 data.

What beats Serperior in Gen 6 OU?

The best counter for Serperior in Gen 6 OU is Heatran with a 90.2% win rate when they meet. Based on Smogon's Feb 2026 - Apr 2026 usage data, the top Pokémon that beat Serperior include Heatran, Tornadus-Therian, Excadrill, Keldeo, Rotom-Wash.

What is the best counter for Serperior in Gen 6 OU?

Heatran is the best counter for Serperior in Gen 6 OU, KOing or forcing it out in 90.2% of their encounters.

Serperior counters

Gen 6 OU · Sorted by reliability score · Smogon · Feb 2026 - Apr 2026

#0497 Serperior

Grass

USAGE 17.6% #8

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 98.6% Glare 83.8% Taunt 40.4% Synthesis 32.0% Hidden Power Rock 30.5% Hidden Power Fire 27.2% Hidden Power Ice 12.6% Substitute 12.4%

Items

Rocky Helmet 27.8% Leftovers 19.5% Lum Berry 17.3% Light Clay 11.4% Yache Berry 8.4% Chesto Berry 7.0% Assault Vest 3.2% Coba Berry 1.7%

Abilities

Contrary99.9%Overgrow0.1%

Common Teammates

Excadrill42.8%

Thundurus25.0%

Landorus-Therian23.3%

Checks & Counters

Ranked by reliability — blends KO rate with how often each Pokémon is matched up.

# Checker Encounters Reliability KO Rate

Heatran

FireSteel OFFENSIVE CHECK

27.338

90.2% dies 5.68%

DAMAGE CALC

252+ SpA Heatran Magma Storm vs. 252 HP / 252+ SpD Serperior: 270-318 (76.2 - 89.8%) -- 12.5% chance to OHKO after trapping damage

View Heatran counters → Teams with Heatran →

Tornadus-Therian

Flying SOFT CHECK

52.241

45.4% dies 9.60%

DAMAGE CALC

0- SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Serperior: 174-206 (49.1 - 58.1%) -- 98.4% chance to 2HKO

View Tornadus-Therian counters → Teams with Tornadus-Therian →

Excadrill

GroundSteel SOFT CHECK

49.987

23.4% dies 8.46%

DAMAGE CALC

252+ Atk Mold Breaker Excadrill Iron Head vs. 252 HP / 0 Def Serperior: 154-183 (43.5 - 51.6%) -- 9.4% chance to 2HKO

View Excadrill counters → Teams with Excadrill →

Keldeo

WaterFighting SOFT CHECK

23.513

14.4% dies 7.24%

DAMAGE CALC

252+ SpA Choice Specs Keldeo Focus Blast vs. 252 HP / 252+ SpD Serperior: 238-282 (67.2 - 79.6%) -- guaranteed 2HKO

View Keldeo counters → Teams with Keldeo →

Rotom-Wash

ElectricWater SOFT CHECK

20.331

3.6% dies 4.15%

DAMAGE CALC

252+ SpA Rotom-Wash Hydro Pump vs. 252 HP / 252+ SpD Serperior: 63-75 (17.7 - 21.1%) -- possible 5HKO

View Rotom-Wash counters → Teams with Rotom-Wash →

Ranked #8 with 17.62% usage. Sorted by reliability score.