Is Tapu Koko viable in Gen 7 OU?

Tapu Koko is ranked #4 in Gen 7 OU with 27.56% usage according to Smogon Jul 2026 - Sep 2026 data.

What beats Tapu Koko in Gen 7 OU?

Excadrill has the strongest conservative score in this observed Jul 2026 - Sep 2026 sample. The target was knocked out or switched out in 79.4% of 202.33989903927053 relevant encounters. Standard error is 2.8 points. Sets and switch conditions can change the result.

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

Tapu Koko counters

Gen 7 OU · Smogon source period Jul 2026 - Sep 2026

#0785 Tapu Koko

ElectricFairy

USAGE 27.6% #4

ABILITYElectric Surge

BASE STATS

HP 70

ATK 115

DEF 85

SPA 95

SPD 75

SPE 130

BST570

TYPE MATCHUPS

2×

PoisonGround

½×

ElectricFightingFlyingBugDark

0×

Dragon

Moves

Thunderbolt 66.4% Dazzling Gleam 52.7% Hidden Power Ice 51.3% Taunt 50.9% Volt Switch 50.0% U-turn 47.5% Nature's Madness 26.0% Roost 18.6%

Items

Fairium Z 26.2% Magnet 23.1% Life Orb 21.9% Choice Specs 8.5% Choice Scarf 4.9% Electrium Z 4.5% Shuca Berry 3.6% Light Clay 2.9%

Abilities

Electric Surge100.0%

Common Teammates

Greninja66.1%

Landorus-Therian60.9%

Browse Gen 7 OU teams using Tapu Koko →

Explore Tapu Koko + Excadrill teams 68 score Explore Tapu Koko + Ferrothorn teams 57 score

Leading observed checks

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

Team core to explore

Tapu Koko + Greninja 66.1% 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

Excadrill

GroundSteel OFFENSIVE CHECK View matchup

202.34

68.0

79.4% Standard error 2.85 points

DAMAGE CALCElectric Terrain

252+ Atk Excadrill Earthquake vs. 252 HP / 0 Def Tapu Koko: 422-500 (122.6 - 145.3%) -- guaranteed OHKO

View Excadrill counters → Teams with Excadrill →

Swampert-Mega

WaterGround OFFENSIVE CHECK View matchup

154.556

64.4

77.8% Standard error 3.34 points

DAMAGE CALCElectric Terrain

252+ Atk Swampert-Mega Earthquake vs. 252 HP / 0 Def Tapu Koko: 458-540 (133.1 - 156.9%) -- guaranteed OHKO

View Swampert-Mega counters →

Gastrodon

WaterGround DEFENSIVE CHECK View matchup

100.417

64.1

80.1% Standard error 3.99 points

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Gastrodon: 213-213 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery

View Gastrodon counters →

Venusaur-Mega

GrassPoison DEFENSIVE CHECK View matchup

23.791

58.3

86.4% Standard error 7.02 points

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Venusaur-Mega: 182-182 (50 - 50%) -- guaranteed 2HKO

View Venusaur-Mega counters →

Ferrothorn

GrassSteel DEFENSIVE CHECK View matchup

260.843

57.4

68.8% Standard error 2.87 points

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Ferrothorn: 176-176 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery

View Ferrothorn counters → Teams with Ferrothorn →

Alakazam-Mega

Psychic OFFENSIVE CHECK View matchup

54.844

56.7

78.8% Standard error 5.52 points

DAMAGE CALCElectric Terrain

252+ SpA Alakazam-Mega Psychic vs. 252 HP / 252+ SpD Tapu Koko: 175-207 (50.8 - 60.1%) -- guaranteed 2HKO

View Alakazam-Mega counters →

Tapu Bulu

GrassFairy OFFENSIVE CHECK View matchup

53.704

55.7

78.2% Standard error 5.63 points

DAMAGE CALCGrassy Terrain

252+ Atk Tapu Bulu Wood Hammer vs. 252 HP / 0 Def Tapu Koko in Grassy Terrain: 370-436 (107.5 - 126.7%) -- guaranteed OHKO

View Tapu Bulu counters → Teams with Tapu Bulu →

Chansey

Normal DEFENSIVE CHECK View matchup

155.486

53.8

68.7% Standard error 3.72 points

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Chansey: 352-352 (50 - 50%) -- guaranteed 2HKO

View Chansey counters → Teams with Chansey →

Tangrowth

Grass DEFENSIVE CHECK View matchup

129.063

49.5

66.2% Standard error 4.16 points

DAMAGE CALCElectric Terrain

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

View Tangrowth counters →

Heatran

FireSteel OFFENSIVE CHECK View matchup

211.971

49.5

62.8% Standard error 3.32 points

DAMAGE CALCElectric Terrain

252+ SpA Heatran Earth Power vs. 252 HP / 252+ SpD Tapu Koko: 188-222 (54.6 - 64.5%) -- guaranteed 2HKO

View Heatran counters → Teams with Heatran →

Lopunny-Mega

NormalFighting OFFENSIVE CHECK View matchup

59.336

47.9

71.4% Standard error 5.87 points

DAMAGE CALCElectric Terrain

252+ Atk Lopunny-Mega Frustration vs. 252 HP / 0 Def Tapu Koko: 217-256 (63 - 74.4%) -- guaranteed 2HKO

View Lopunny-Mega counters → Teams with Lopunny-Mega →

Hippowdon

Ground DEFENSIVE CHECK View matchup

26.977

43.4

76.2% Standard error 8.20 points

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Hippowdon: 210-210 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery

View Hippowdon counters →

Magearna

SteelFairy SOFT CHECK View matchup

317.81

41.4

52.6% Standard error 2.80 points

DAMAGE CALCElectric Terrain

252+ SpA Magearna Fleur Cannon vs. 252 HP / 252+ SpD Tapu Koko: 202-238 (58.7 - 69.1%) -- guaranteed 2HKO

View Magearna counters → Teams with Magearna →

Serperior

Grass DEFENSIVE CHECK View matchup

75.282

34.5

57.3% Standard error 5.70 points

DAMAGE CALCElectric Terrain

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

View Serperior counters → Teams with Serperior →

Tapu Lele

PsychicFairy SOFT CHECK View matchup

110.155

33.7

52.7% Standard error 4.76 points

DAMAGE CALCPsychic Terrain

252+ SpA Choice Specs Tapu Lele Psyshock vs. 252 HP / 0 Def Tapu Koko in Psychic Terrain: 370-436 (107.5 - 126.7%) -- guaranteed OHKO

View Tapu Lele counters → Teams with Tapu Lele →

Tapu Koko

ElectricFairy SOFT CHECK View matchup

234.989

33.6

46.6% Standard error 3.25 points

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Tapu Koko: 172-172 (50 - 50%) -- guaranteed 2HKO

View Tapu Koko counters → Teams with Tapu Koko →

Landorus-Therian

GroundFlying SOFT CHECK View matchup

557.611

33.5

41.8% Standard error 2.09 points

DAMAGE CALCElectric Terrain

252+ Atk Landorus-Therian Earthquake vs. 252 HP / 0 Def Tapu Koko: 446-528 (129.6 - 153.4%) -- guaranteed OHKO

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

Seismitoad

WaterGround OFFENSIVE CHECK View matchup

25.804

31.7

68.3% Standard error 9.16 points

DAMAGE CALCElectric Terrain

252+ Atk Seismitoad Earthquake vs. 252 HP / 0 Def Tapu Koko: 332-392 (96.5 - 113.9%) -- 81.3% chance to OHKO

View Seismitoad counters → Teams with Seismitoad →

Gliscor

GroundFlying SOFT CHECK View matchup

226.457

30.9

44.1% Standard error 3.30 points

DAMAGE CALCElectric Terrain

252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Tapu Koko: 332-392 (96.5 - 113.9%) -- 81.3% chance to OHKO

View Gliscor counters → Teams with Gliscor →

Greninja

WaterDark SOFT CHECK View matchup

249.622

29.3

41.8% Standard error 3.12 points

DAMAGE CALCElectric Terrain

252+ SpA Choice Specs Greninja Hydro Pump vs. 252 HP / 252+ SpD Tapu Koko: 217-256 (63 - 74.4%) -- guaranteed 2HKO

View Greninja counters → Teams with Greninja →

Latias-Mega

DragonPsychic SOFT CHECK View matchup

118.562

28.7

47.1% Standard error 4.58 points

DAMAGE CALCElectric Terrain

252+ SpA Latias-Mega Psychic vs. 252 HP / 252+ SpD Tapu Koko: 148-175 (43 - 50.8%) -- 3.1% chance to 2HKO

View Latias-Mega counters →

Victini

PsychicFire SOFT CHECK View matchup

65.089

26.8

51.6% Standard error 6.19 points

DAMAGE CALCElectric Terrain

252+ Atk Victini V-create vs. 252 HP / 0 Def Tapu Koko: 307-363 (89.2 - 105.5%) -- 31.3% chance to OHKO

View Victini counters → Teams with Victini →

Cresselia

Psychic SOFT CHECK View matchup

89.688

26.3

47.3% Standard error 5.27 points

DAMAGE CALCElectric Terrain

252+ SpA Cresselia Future Sight vs. 252 HP / 252+ SpD Tapu Koko: 129-153 (37.5 - 44.4%) -- guaranteed 3HKO

View Cresselia counters → Teams with Cresselia →

Kartana

GrassSteel SOFT CHECK View matchup

158.242

26.0

41.7% Standard error 3.92 points

DAMAGE CALCElectric Terrain

252+ Atk Kartana Giga Impact vs. 252 HP / 0 Def Tapu Koko: 265-312 (77 - 90.6%) -- guaranteed 2HKO

View Kartana counters → Teams with Kartana →

Clefable

Fairy SOFT CHECK View matchup

153.895

24.8

40.7% Standard error 3.96 points

DAMAGE CALCElectric Terrain

252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Tapu Koko: 118-141 (34.3 - 40.9%) -- guaranteed 3HKO

View Clefable counters → Teams with Clefable →

Scizor-Mega

BugSteel OFFENSIVE CHECK View matchup

39.543

24.6

56.2% Standard error 7.89 points

DAMAGE CALCElectric Terrain

252+ Atk Scizor-Mega Double-Edge vs. 252 HP / 0 Def Tapu Koko: 183-216 (53.1 - 62.7%) -- guaranteed 2HKO

View Scizor-Mega counters → Teams with Scizor-Mega →

Jirachi

SteelPsychic DEFENSIVE CHECK View matchup

39.952

24.1

55.5% Standard error 7.86 points

DAMAGE CALCElectric Terrain

Tapu Koko Nature's Madness vs. 252 HP Jirachi: 202-202 (50 - 50%) -- guaranteed 3HKO after Leftovers recovery

View Jirachi counters → Teams with Jirachi →

Kyurem-Black

DragonIce SOFT CHECK View matchup

104.891

21.2

40.3% Standard error 4.79 points

DAMAGE CALCElectric Terrain

252+ Atk Kyurem-Black Freeze Shock vs. 252 HP / 0 Def Tapu Koko: 352-415 (102.3 - 120.6%) -- guaranteed OHKO

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

Tyranitar-Mega

RockDark DEFENSIVE CHECK View matchup

24.342

20.8

60.4% Standard error 9.91 points

DAMAGE CALCElectric Terrain

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

View Tyranitar-Mega counters →

Medicham-Mega

FightingPsychic SOFT CHECK View matchup

295.416

17.4

27.8% Standard error 2.61 points

DAMAGE CALCElectric Terrain

252+ Atk Pure Power Medicham-Mega Zen Headbutt vs. 252 HP / 0 Def Tapu Koko: 273-322 (79.3 - 93.6%) -- guaranteed 2HKO

View Medicham-Mega counters →

Ranked #4 with 27.56% usage. Sorted by conservative score.