Is Keldeo viable in Gen 6 OU?

Keldeo is ranked #8 in Gen 6 OU with 16.67% usage according to Smogon Apr 2026 - Jun 2026 data.

What beats Keldeo in Gen 6 OU?

The best counter for Keldeo in Gen 6 OU is Serperior with a 78.7% win rate when they meet. Based on Smogon's Apr 2026 - Jun 2026 usage data, the top Pokémon that beat Keldeo include Serperior, Clefable, Slowbro, Tornadus-Therian, Keldeo.

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

Serperior is the best counter for Keldeo in Gen 6 OU, KOing or forcing it out in 78.7% of their encounters.

Keldeo counters

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

#0647 Keldeo

WaterFighting

USAGE 16.7% #8

BASE STATS

HP 91

ATK 72

DEF 90

SPA 129

SPD 90

SPE 108

BST580

TYPE MATCHUPS

2×

ElectricGrassFlyingPsychicFairy

½×

FireWaterIceBugRockDarkSteel

Moves

Secret Sword 97.4% Scald 90.6% Hydro Pump 50.1% Calm Mind 34.0% Substitute 27.5% Focus Blast 21.1% Taunt 14.0% Rest 13.3%

Items

Leftovers 44.9% Choice Specs 40.3% Mystic Water 5.8% Choice Scarf 5.6% Expert Belt 0.8% Life Orb 0.8% Weakness Policy 0.7% Black Belt 0.3%

Common Teammates

Excadrill54.2%

Landorus-Therian28.8%

Garchomp23.7%

Tornadus-Therian21.7%

Browse Gen 6 OU teams using Keldeo →

Teams using Serperior 79% Teams using Clefable 64% Teams using Slowbro 57% Teams using Tornadus-Therian 52% Teams using Keldeo 49% Teams using Ferrothorn 34%

Checks & Counters

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

# Checker Encounters Reliability KO Rate

Serperior

Grass DEFENSIVE COUNTER

72.077

78.7% dies 6.74%

DAMAGE CALC

252+ SpA Keldeo Focus Blast vs. 252 HP / 252+ SpD Serperior: 160-189 (45.1 - 53.3%) -- 33.2% chance to 2HKO

View Serperior counters → Teams with Serperior →

Clefable

Fairy DEFENSIVE COUNTER

58.775

64.4% dies 8.83%

DAMAGE CALC

252+ SpA Keldeo Hydro Pump vs. 252 HP / 252+ SpD Clefable: 153-180 (38.8 - 45.6%) -- guaranteed 3HKO after Leftovers recovery

View Clefable counters → Teams with Clefable →

Slowbro

WaterPsychic DEFENSIVE COUNTER

20.448

56.7% dies 10.96%

DAMAGE CALC

252+ SpA Keldeo Focus Blast vs. 252 HP / 252+ SpD Slowbro: 89-105 (22.5 - 26.6%) -- possible 5HKO

View Slowbro counters → Teams with Slowbro →

Tornadus-Therian

Flying SOFT CHECK

63.816

51.5% dies 10.83%

DAMAGE CALC

0- SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Keldeo: 180-212 (46.6 - 54.9%) -- 11.3% chance to 2HKO after Leftovers recovery

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

Keldeo

WaterFighting SOFT CHECK

49.581

49.0% dies 10.02%

DAMAGE CALC

252+ SpA Keldeo Secret Sword vs. 252 HP / 0 Def Keldeo: 166-196 (43 - 50.7%) -- guaranteed 3HKO after Leftovers recovery

View Keldeo counters → Teams with Keldeo →

Ferrothorn

GrassSteel SOFT CHECK

27.996

33.5% dies 8.92%

DAMAGE CALC

252+ Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Keldeo: 378-446 (97.9 - 115.5%) -- 87.5% chance to OHKO

View Ferrothorn counters → Teams with Ferrothorn →

Zapdos

ElectricFlying SOFT CHECK

24.637

23.6% dies 8.56%

DAMAGE CALC

252+ SpA Zapdos Thunderbolt vs. 252 HP / 252+ SpD Keldeo: 242-288 (62.6 - 74.6%) -- guaranteed 2HKO after Leftovers recovery

View Zapdos counters → Teams with Zapdos →

Scizor-Mega

BugSteel SOFT CHECK

20.354

22.3% dies 9.23%

DAMAGE CALC

252+ Atk Scizor-Mega Superpower vs. 252 HP / 0 Def Keldeo: 175-206 (45.3 - 53.3%) -- 0.4% chance to 2HKO after Leftovers recovery

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

Excadrill

GroundSteel SOFT CHECK

105.451

19.5% dies 6.46%

DAMAGE CALC

252+ Atk Excadrill Earthquake vs. 252 HP / 0 Def Keldeo: 202-238 (52.3 - 61.6%) -- 97.7% chance to 2HKO after Leftovers recovery

View Excadrill counters → Teams with Excadrill →

Bisharp

DarkSteel SOFT CHECK

28.159

16.7% dies 7.03%

DAMAGE CALC

252+ Atk Black Glasses Bisharp Knock Off (97.5 BP) vs. 252 HP / 0 Def Keldeo: 111-132 (28.7 - 34.1%) -- 2.3% chance to 3HKO

View Bisharp counters → Teams with Bisharp →

Weavile

DarkIce SOFT CHECK

23.271

15.2% dies 7.44%

DAMAGE CALC

252+ Atk Choice Band Weavile Knock Off (97.5 BP) vs. 252 HP / 0 Def Keldeo: 135-159 (34.9 - 41.1%) -- guaranteed 3HKO

View Weavile counters → Teams with Weavile →

Landorus-Therian

GroundFlying SOFT CHECK

70.517

11.5% dies 6.25%

DAMAGE CALC

252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Keldeo: 354-417 (91.7 - 108%) -- 50% chance to OHKO

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

Tyranitar

RockDark SOFT CHECK

25.171

8.7% dies 5.62%

DAMAGE CALCSand

252+ Atk Tyranitar Superpower vs. 252 HP / 0 Def Keldeo: 161-190 (41.7 - 49.2%) -- guaranteed 3HKO after sandstorm damage and Leftovers recovery

View Tyranitar counters → Teams with Tyranitar →

Heatran

FireSteel SOFT CHECK

48.397

4.8% dies 4.32%

DAMAGE CALC

252+ SpA Heatran Earth Power vs. 252 HP / 252+ SpD Keldeo: 84-99 (21.7 - 25.6%) -- possible 5HKO

View Heatran counters → Teams with Heatran →

Ranked #8 with 16.67% usage. Sorted by reliability score.