Is Serperior viable in Gen 7 OU?

Serperior is ranked #15 in Gen 7 OU with 10.10% usage according to Smogon Apr 2026 - Jun 2026 data.

What beats Serperior in Gen 7 OU?

The best counter for Serperior in Gen 7 OU is Kyurem-Black with a 72.3% win rate when they meet. Based on Smogon's Apr 2026 - Jun 2026 usage data, the top Pokémon that beat Serperior include Kyurem-Black, Heatran, Celesteela, Tapu Lele, Magearna.

What is the best counter for Serperior in Gen 7 OU?

Kyurem-Black is the best counter for Serperior in Gen 7 OU, KOing or forcing it out in 72.3% of their encounters.

Serperior counters

Gen 7 OU · Sorted by reliability score · Smogon · Apr 2026 - Jun 2026

#0497 Serperior

Grass

USAGE 10.1% #15

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 99.8% Glare 73.0% Defog 48.9% Hidden Power Fire 37.2% Taunt 36.1% Substitute 33.5% Leech Seed 31.0% Knock Off 20.1%

Items

Leftovers 36.1% Rocky Helmet 27.9% Choice Scarf 20.6% Wiki Berry 7.0% Grassium Z 3.2% Miracle Seed 1.4% Light Clay 1.2% Meadow Plate 0.7%

Abilities

Contrary99.9%Overgrow0.1%

Common Teammates

Landorus-Therian50.5%

Browse Gen 7 OU teams using Serperior →

Teams using Kyurem-Black 72% Teams using Heatran 68% Teams using Celesteela 64% Teams using Tapu Lele 57% Teams using Magearna 50% Teams using Ferrothorn 49%

Checks & Counters

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

# Checker Encounters Reliability KO Rate

Kyurem-Black

DragonIce OFFENSIVE CHECK

48.453

72.3% dies 8.90%

DAMAGE CALC

252+ Atk Teravolt Kyurem-Black Freeze Shock vs. 252 HP / 0 Def Serperior: 642-756 (181.3 - 213.5%) -- guaranteed OHKO

View Kyurem-Black counters → Teams with Kyurem-Black →

Heatran

FireSteel OFFENSIVE CHECK

93.083

68.3% dies 8.22%

DAMAGE CALC

252+ SpA Heatran Magma Storm vs. 252 HP / 252+ SpD Serperior: 270-318 (76.2 - 89.8%) -- guaranteed 2HKO after Leftovers recovery and trapping damage

View Heatran counters → Teams with Heatran →

Celesteela

SteelFlying DEFENSIVE COUNTER

46.904

63.6% dies 9.67%

DAMAGE CALC

252+ SpA Serperior Hidden Power Fire vs. 252 HP / 252+ SpD Celesteela: 72-86 (18 - 21.6%) -- possible 7HKO

View Celesteela counters → Teams with Celesteela →

Tapu Lele

PsychicFairy OFFENSIVE CHECK

42.639

57.3% dies 10.61%

DAMAGE CALCPsychic Terrain

252+ SpA Choice Specs Tapu Lele Psyshock vs. 252 HP / 0 Def Serperior in Psychic Terrain: 337-397 (95.1 - 112.1%) -- 68.8% chance to OHKO

View Tapu Lele counters → Teams with Tapu Lele →

Magearna

SteelFairy SOFT CHECK

265.677

50.5% dies 5.24%

DAMAGE CALC

252+ SpA Magearna Fleur Cannon vs. 252 HP / 252+ SpD Serperior: 174-205 (49.1 - 57.9%) -- 59% chance to 2HKO after Leftovers recovery

View Magearna counters → Teams with Magearna →

Ferrothorn

GrassSteel SOFT CHECK

110.278

49.2% dies 8.11%

DAMAGE CALC

252+ Atk Ferrothorn Knock Off (97.5 BP) vs. 252 HP / 0 Def Serperior: 97-115 (27.4 - 32.4%) -- guaranteed 4HKO

View Ferrothorn counters → Teams with Ferrothorn →

Victini

PsychicFire SOFT CHECK

57.868

47.9% dies 9.28%

DAMAGE CALC

252+ Atk Victini V-create vs. 252 HP / 0 Def Serperior: 560-662 (158.1 - 187%) -- guaranteed OHKO

View Victini counters → Teams with Victini →

Tornadus-Therian

Flying SOFT CHECK

109.059

43.8% dies 8.12%

DAMAGE CALC

252+ SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Serperior: 264-312 (74.5 - 88.1%) -- guaranteed 2HKO after Leftovers recovery

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

Greninja

WaterDark SOFT CHECK

193.196

43.4% dies 6.13%

DAMAGE CALC

252+ SpA Choice Specs Greninja Ice Beam vs. 252 HP / 252+ SpD Serperior: 204-242 (57.6 - 68.3%) -- guaranteed 2HKO after Leftovers recovery

View Greninja counters → Teams with Greninja →

Medicham-Mega

FightingPsychic SOFT CHECK

50.175

31.8% dies 9.29%

DAMAGE CALC

252+ Atk Pure Power Medicham-Mega High Jump Kick vs. 252 HP / 0 Def Serperior: 405-477 (114.4 - 134.7%) -- guaranteed OHKO

View Medicham-Mega counters → Teams with Medicham-Mega →

Kartana

GrassSteel SOFT CHECK

90.393

30.4% dies 8.32%

DAMAGE CALC

252+ Atk Kartana Smart Strike vs. 252 HP / 0 Def Serperior: 169-199 (47.7 - 56.2%) -- 28.9% chance to 2HKO after Leftovers recovery

View Kartana counters → Teams with Kartana →

Tapu Koko

ElectricFairy SOFT CHECK

128.41

30.3% dies 6.90%

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Serperior: 177-177 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery

View Tapu Koko counters → Teams with Tapu Koko →

Excadrill

GroundSteel SOFT CHECK

83.167

29.4% dies 8.47%

DAMAGE CALC

252+ Atk Excadrill Iron Head vs. 252 HP / 0 Def Serperior: 154-183 (43.5 - 51.6%) -- guaranteed 3HKO after Leftovers recovery

View Excadrill counters → Teams with Excadrill →

Swampert-Mega

WaterGround SOFT CHECK

62.426

22.3% dies 7.43%

DAMAGE CALC

252+ Atk Swampert-Mega Ice Punch vs. 252 HP / 0 Def Serperior: 210-248 (59.3 - 70%) -- guaranteed 2HKO after Leftovers recovery

View Swampert-Mega counters → Teams with Swampert-Mega →

Clefable

Fairy SOFT CHECK

20.566

21.0% dies 8.98%

DAMAGE CALC

252+ SpA Clefable Flamethrower vs. 252 HP / 252+ SpD Serperior: 130-154 (36.7 - 43.5%) -- 98.9% chance to 3HKO after Leftovers recovery

View Clefable counters → Teams with Clefable →

Toxapex

PoisonWater SOFT CHECK

95.33

19.1% dies 6.75%

DAMAGE CALC

0- Atk Toxapex Knock Off (97.5 BP) vs. 252 HP / 0 Def Serperior: 45-54 (12.7 - 15.2%) -- possible 7HKO

View Toxapex counters → Teams with Toxapex →

Tapu Fini

WaterFairy SOFT CHECK

84.533

11.8% dies 6.05%

DAMAGE CALCMisty Terrain

Tapu Fini Nature's Madness vs. 252 HP Serperior: 177-177 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery

View Tapu Fini counters → Teams with Tapu Fini →

Chansey

Normal SOFT CHECK

52.892

11.4% dies 5.97%

DAMAGE CALC

Chansey Seismic Toss vs. 252 HP Serperior: 100-100 (28.2 - 28.2%) -- guaranteed 5HKO after Leftovers recovery

View Chansey counters → Teams with Chansey →

Landorus-Therian

GroundFlying SOFT CHECK

209.905

7.4% dies 3.10%

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 →

Diancie-Mega

RockFairy SOFT CHECK

29.784

4.8% dies 3.93%

DAMAGE CALC

0- Atk Diancie-Mega Diamond Storm vs. 252 HP / 0 Def Serperior: 153-180 (43.2 - 50.8%) -- guaranteed 3HKO after Leftovers recovery

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

Ranked #15 with 10.10% usage. Sorted by reliability score.