Is Koraidon viable in Gen 9 VGC 2026 Reg I (Bo3)?

Koraidon is ranked #10 in Gen 9 VGC 2026 Reg I (Bo3) with 22.44% usage according to Smogon Feb 2026 - Apr 2026 data.

What beats Koraidon in Gen 9 VGC 2026 Reg I (Bo3)?

The best counter for Koraidon in Gen 9 VGC 2026 Reg I (Bo3) is Zamazenta-Crowned with a 50.8% win rate when they meet. Based on Smogon's Feb 2026 - Apr 2026 usage data, the top Pokémon that beat Koraidon include Zamazenta-Crowned, Calyrex-Shadow, Miraidon, Incineroar, Kyogre.

What is the best counter for Koraidon in Gen 9 VGC 2026 Reg I (Bo3)?

Zamazenta-Crowned is the best counter for Koraidon in Gen 9 VGC 2026 Reg I (Bo3), KOing or forcing it out in 50.8% of their encounters.

Koraidon counters

Gen 9 VGC 2026 Reg I (Bo3) · Sorted by reliability score · Smogon · Feb 2026 - Apr 2026

#1007 Koraidon

FightingDragon

USAGE 22.4% #10

BASE STATS

HP 100

ATK 135

DEF 115

SPA 85

SPD 100

SPE 135

BST670

TYPE MATCHUPS

4×

Fairy

2×

IceFlyingPsychicDragon

½×

FireWaterElectricGrassBugRockDark

Moves

Flare Blitz 99.8% Protect 98.9% Flame Charge 92.8% Low Kick 44.9% Close Combat 31.8% Collision Course 23.0% Dragon Claw 4.3% Scale Shot 1.6%

Items

Clear Amulet 62.4% Life Orb 30.6% Ability Shield 4.1% Loaded Dice 1.1% Choice Band 0.9% Covert Cloak 0.5% Grassy Seed 0.3% Choice Scarf 0.1%

Tera Types

Fire 99.9% Ghost 0.0% Fighting 0.0% Steel 0.0% Fairy 0.0% Electric 0.0% Dragon 0.0% Water 0.0%

Common Teammates

Checks & Counters

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

# Checker Encounters Reliability KO Rate

Zamazenta-Crowned

FightingSteel SOFT CHECK

24.324

50.8% dies 10.14%

DAMAGE CALCSun

+1 0 Def Zamazenta-Crowned Body Press vs. 252 HP / 0 Def Koraidon: 81-96 (39.1 - 46.3%) -- guaranteed 3HKO

View Zamazenta-Crowned counters → Teams with Zamazenta-Crowned →

Calyrex-Shadow

PsychicGhost SOFT CHECK

33.302

49.6% dies 8.66%

DAMAGE CALCSun

252+ SpA Calyrex-Shadow Psychic vs. 252 HP / 252+ SpD Koraidon: 146-174 (70.5 - 84%) -- guaranteed 2HKO

View Calyrex-Shadow counters → Teams with Calyrex-Shadow →

Miraidon

ElectricDragon SOFT CHECK

37.81

41.5% dies 8.01%

DAMAGE CALCElectric Terrain

252+ SpA Hadron Engine Miraidon Draco Meteor vs. 252 HP / 252+ SpD Koraidon: 240-284 (115.9 - 137.1%) -- guaranteed OHKO

View Miraidon counters → Teams with Miraidon →

Incineroar

FireDark SOFT CHECK

53.13

40.9% dies 6.74%

DAMAGE CALCSun

252+ Atk Incineroar Flare Blitz vs. 252 HP / 0 Def Koraidon in Sun: 69-81 (33.3 - 39.1%) -- guaranteed 3HKO

View Incineroar counters → Teams with Incineroar →

Kyogre

Water SOFT CHECK

27.067

35.6% dies 9.20%

DAMAGE CALCRain

252+ SpA Mystic Water Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Koraidon in Rain: 102-120 (49.2 - 57.9%) -- 96.9% chance to 2HKO

View Kyogre counters → Teams with Kyogre →

Calyrex-Ice

PsychicIce SOFT CHECK

21.653

31.0% dies 9.94%

DAMAGE CALCSun

252+ Atk Calyrex-Ice Glacial Lance vs. 252 HP / 0 Def Koraidon: 240-284 (115.9 - 137.1%) -- guaranteed OHKO

View Calyrex-Ice counters → Teams with Calyrex-Ice →

Ranked #10 with 22.44% usage. Sorted by reliability score.