Is Swampert-Mega viable in Gen 7 OU?

Swampert-Mega is ranked #16 in Gen 7 OU with 9.99% usage according to Smogon May 2026 - Jul 2026 data.

What beats Swampert-Mega in Gen 7 OU?

Skarmory has the strongest conservative score in this observed May 2026 - Jul 2026 sample. The target was knocked out or switched out in 72.2% of 81.77273151964405 relevant encounters. Standard error is 6.9 points. Sets and switch conditions can change the result.

How are Swampert-Mega matchup checks ranked in Gen 7 OU?

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

Swampert-Mega counters

Gen 7 OU · Sorted by p − 4 standard errors · Smogon source period May 2026 - Jul 2026 · Generated 2026-08-05

#0260 Swampert-Mega

WaterGround

USAGE 10.0% #16

BASE STATS

HP 100

ATK 150

DEF 110

SPA 95

SPD 110

SPE 70

BST635

TYPE MATCHUPS

4×

Grass

½×

FirePoisonRockSteel

0×

Electric

Moves

Earthquake 98.2% Waterfall 93.7% Ice Punch 72.2% Stealth Rock 38.6% Power-Up Punch 34.6% Toxic 18.0% Substitute 14.9% Superpower 13.5%

Items

Swampertite 100.0%

Common Teammates

Pelipper94.9%

Ferrothorn84.3%

Greninja82.4%

Tornadus-Therian52.5%

Leading observed checks

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

Team core to explore

Swampert-Mega + Pelipper 94.9% 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

Skarmory

SteelFlying DEFENSIVE CHECK View matchup

81.773

44.7

72.2% Standard error 6.86 points

DAMAGE CALC

252+ Atk Swampert-Mega Waterfall vs. 252 HP / 252+ Def Skarmory: 91-108 (27.2 - 32.3%) -- guaranteed 4HKO

View Skarmory counters →

Kartana

GrassSteel OFFENSIVE CHECK View matchup

128.632

40.8

69.0% Standard error 7.06 points

DAMAGE CALC

252+ Atk Kartana Leaf Blade vs. 252 HP / 0 Def Swampert-Mega: 768-904 (190 - 223.7%) -- guaranteed OHKO

View Kartana counters → Teams with Kartana →

Serperior

Grass DEFENSIVE CHECK View matchup

94.956

38.9

71.1% Standard error 8.05 points

DAMAGE CALC

252+ Atk Swampert-Mega Ice Punch vs. 252 HP / 252+ Def Serperior: 150-178 (42.3 - 50.2%) -- guaranteed 3HKO after Leftovers recovery

View Serperior counters → Teams with Serperior →

Hawlucha

FightingFlying OFFENSIVE CHECK View matchup

21.296

37.6

75.1% Standard error 9.37 points

DAMAGE CALC

252+ Atk Hawlucha High Jump Kick vs. 252 HP / 0 Def Swampert-Mega: 169-201 (41.8 - 49.7%) -- guaranteed 3HKO

View Hawlucha counters → Teams with Hawlucha →

Greninja

WaterDark SOFT CHECK View matchup

200.017

18.3

42.3% Standard error 6.01 points

DAMAGE CALC

252+ SpA Choice Specs Greninja Hydro Pump vs. 252 HP / 252+ SpD Swampert-Mega: 169-201 (41.8 - 49.7%) -- guaranteed 3HKO

View Greninja counters → Teams with Greninja →

Ferrothorn

GrassSteel SOFT CHECK View matchup

153.268

17.5

45.1% Standard error 6.92 points

DAMAGE CALC

252+ Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Swampert-Mega: 640-756 (158.4 - 187.1%) -- guaranteed OHKO

View Ferrothorn counters → Teams with Ferrothorn →

Medicham-Mega

FightingPsychic SOFT CHECK View matchup

128.947

17.0

46.1% Standard error 7.28 points

DAMAGE CALC

252+ Atk Pure Power Medicham-Mega High Jump Kick vs. 252 HP / 0 Def Swampert-Mega: 357-421 (88.3 - 104.2%) -- 25% chance to OHKO

View Medicham-Mega counters →

Slowbro

WaterPsychic SOFT CHECK View matchup

28.323

15.9

53.4% Standard error 9.37 points

DAMAGE CALC

252+ SpA Slowbro Future Sight vs. 252 HP / 252+ SpD Swampert-Mega: 121-144 (29.9 - 35.6%) -- 31.7% chance to 3HKO

View Slowbro counters → Teams with Slowbro →

Tangrowth

Grass SOFT CHECK View matchup

76.585

15.2

44.6% Standard error 7.36 points

DAMAGE CALC

252+ SpA Tangrowth Giga Drain vs. 252 HP / 252+ SpD Swampert-Mega: 328-388 (81.1 - 96%) -- guaranteed 2HKO

View Tangrowth counters →

Charizard-Mega-Y

FireFlying SOFT CHECK View matchup

26.926

13.4

51.9% Standard error 9.63 points

DAMAGE CALCSun

252+ SpA Charizard-Mega-Y Solar Beam vs. 252 HP / 252+ SpD Swampert-Mega: 452-532 (111.8 - 131.6%) -- guaranteed OHKO

View Charizard-Mega-Y counters →

Rotom-Wash

ElectricWater SOFT CHECK View matchup

75.739

12.5

51.9% Standard error 9.85 points

DAMAGE CALC

252+ SpA Rotom-Wash Hydro Pump vs. 252 HP / 252+ SpD Swampert-Mega: 115-136 (28.4 - 33.6%) -- 0.5% chance to 3HKO

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

Scizor-Mega

BugSteel SOFT CHECK View matchup

22.532

10.8

52.9% Standard error 10.52 points

DAMAGE CALC

252+ Atk Scizor-Mega Superpower vs. 252 HP / 0 Def Swampert-Mega: 147-174 (36.3 - 43%) -- guaranteed 3HKO

View Scizor-Mega counters →

Pelipper

WaterFlying SOFT CHECK View matchup

20.121

9.2

53.7% Standard error 11.12 points

DAMAGE CALCRain

0- SpA Pelipper Surf vs. 252 HP / 252+ SpD Swampert-Mega in Rain: 84-100 (20.7 - 24.7%) -- guaranteed 5HKO

View Pelipper counters → Teams with Pelipper →

Latias-Mega

DragonPsychic SOFT CHECK View matchup

81.79

9.2

47.2% Standard error 9.52 points

DAMAGE CALC

252+ SpA Latias-Mega Draco Meteor vs. 252 HP / 252+ SpD Swampert-Mega: 166-196 (41 - 48.5%) -- guaranteed 3HKO

View Latias-Mega counters →

Clefable

Fairy SOFT CHECK View matchup

83.135

8.3

38.4% Standard error 7.54 points

DAMAGE CALC

252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Swampert-Mega: 93-111 (23 - 27.4%) -- 62.7% chance to 4HKO

View Clefable counters → Teams with Clefable →

Lopunny-Mega

NormalFighting SOFT CHECK View matchup

23.224

5.9

47.4% Standard error 10.36 points

DAMAGE CALC

252+ Atk Lopunny-Mega High Jump Kick vs. 252 HP / 0 Def Swampert-Mega: 223-264 (55.1 - 65.3%) -- guaranteed 2HKO

View Lopunny-Mega counters →

Tapu Fini

WaterFairy SOFT CHECK View matchup

148.958

4.6

30.6% Standard error 6.49 points

DAMAGE CALCMisty Terrain

Tapu Fini Nature's Madness vs. 252 HP Swampert-Mega: 202-202 (50 - 50%) -- guaranteed 2HKO

View Tapu Fini counters → Teams with Tapu Fini →

Magearna

SteelFairy SOFT CHECK View matchup

277.793

3.4

20.0% Standard error 4.13 points

DAMAGE CALC

252+ SpA Magearna Fleur Cannon vs. 252 HP / 252+ SpD Swampert-Mega: 157-186 (38.8 - 46%) -- guaranteed 3HKO

View Magearna counters → Teams with Magearna →

Landorus-Therian

GroundFlying SOFT CHECK View matchup

401.083

2.5

14.6% Standard error 3.02 points

DAMAGE CALC

252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Swampert-Mega: 299-352 (74 - 87.1%) -- guaranteed 2HKO

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

Alakazam-Mega

Psychic SOFT CHECK View matchup

27.77

2.1

39.1% Standard error 9.26 points

DAMAGE CALC

252+ SpA Alakazam-Mega Energy Ball vs. 252 HP / 252+ SpD Swampert-Mega: 364-432 (90 - 106.9%) -- 43.8% chance to OHKO

View Alakazam-Mega counters →

Tornadus-Therian

Flying SOFT CHECK View matchup

130.738

0.6

27.2% Standard error 6.64 points

DAMAGE CALC

252+ SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Swampert-Mega: 118-141 (29.2 - 34.9%) -- 11.1% chance to 3HKO

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

Kyurem-Black

DragonIce SOFT CHECK View matchup

27.256

0.4

37.5% Standard error 9.27 points

DAMAGE CALC

252+ Atk Kyurem-Black Freeze Shock vs. 252 HP / 0 Def Swampert-Mega: 283-334 (70 - 82.6%) -- guaranteed 2HKO

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

Tapu Koko

ElectricFairy SOFT CHECK View matchup

158.882

-2.9

17.2% Standard error 5.04 points

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Swampert-Mega: 202-202 (50 - 50%) -- guaranteed 2HKO

View Tapu Koko counters → Teams with Tapu Koko →

Zapdos

ElectricFlying SOFT CHECK View matchup

96.363

-3.7

27.5% Standard error 7.80 points

DAMAGE CALC

252+ SpA Zapdos Hidden Power Ice vs. 252 HP / 252+ SpD Swampert-Mega: 48-57 (11.8 - 14.1%) -- possible 8HKO

View Zapdos counters → Teams with Zapdos →

Cresselia

Psychic SOFT CHECK View matchup

21.012

-4.4

38.0% Standard error 10.59 points

DAMAGE CALC

252+ SpA Cresselia Future Sight vs. 252 HP / 252+ SpD Swampert-Mega: 102-120 (25.2 - 29.7%) -- guaranteed 4HKO

View Cresselia counters → Teams with Cresselia →

Mawile-Mega

SteelFairy SOFT CHECK View matchup

22.699

-6.7

32.7% Standard error 9.85 points

DAMAGE CALC

252+ Atk Huge Power Mawile-Mega Focus Punch vs. 252 HP / 0 Def Swampert-Mega: 284-335 (70.2 - 82.9%) -- guaranteed 2HKO

View Mawile-Mega counters →

Toxapex

PoisonWater SOFT CHECK View matchup

153.202

-7.0

8.5% Standard error 3.89 points

DAMAGE CALC

252+ SpA Toxapex Scald vs. 252 HP / 252+ SpD Swampert-Mega: 57-67 (14.1 - 16.5%) -- possible 7HKO

View Toxapex counters → Teams with Toxapex →

Chansey

Normal SOFT CHECK View matchup

59.147

-7.5

21.0% Standard error 7.13 points

DAMAGE CALC

Chansey Seismic Toss vs. 252 HP Swampert-Mega: 100-100 (24.7 - 24.7%) -- guaranteed 5HKO

View Chansey counters → Teams with Chansey →

Tapu Bulu

GrassFairy SOFT CHECK View matchup

20.096

-7.5

35.1% Standard error 10.64 points

DAMAGE CALCGrassy Terrain

252+ Atk Tapu Bulu Wood Hammer vs. 252 HP / 0 Def Swampert-Mega in Grassy Terrain: 1188-1404 (294 - 347.5%) -- guaranteed OHKO

View Tapu Bulu counters →

Excadrill

GroundSteel SOFT CHECK View matchup

21.716

-7.9

32.2% Standard error 10.03 points

DAMAGE CALC

252+ Atk Excadrill Earthquake vs. 252 HP / 0 Def Swampert-Mega: 169-201 (41.8 - 49.7%) -- guaranteed 3HKO

View Excadrill counters → Teams with Excadrill →

Ranked #16 with 9.99% usage. Sorted by conservative score.