Is Mewtwo viable in Gen 9 National Dex Ubers?

Mewtwo is ranked #21 in Gen 9 National Dex Ubers with 6.32% usage according to Smogon Feb 2026 - Apr 2026 data.

What beats Mewtwo in Gen 9 National Dex Ubers?

The best counter for Mewtwo in Gen 9 National Dex Ubers is Zacian-Crowned with a 63.2% win rate when they meet. Based on Smogon's Feb 2026 - Apr 2026 usage data, the top Pokémon that beat Mewtwo include Zacian-Crowned, Arceus, Marshadow, Kyogre-Primal, Arceus-Ground.

What is the best counter for Mewtwo in Gen 9 National Dex Ubers?

Zacian-Crowned is the best counter for Mewtwo in Gen 9 National Dex Ubers, KOing or forcing it out in 63.2% of their encounters.

Mewtwo counters

Gen 9 National Dex Ubers · Sorted by reliability score · Smogon · Feb 2026 - Apr 2026

#0150 Mewtwo

Psychic

USAGE 6.3% #21

ABILITYPressure

BASE STATS

HP 106

ATK 110

DEF 90

SPA 154

SPD 90

SPE 130

BST680

TYPE MATCHUPS

2×

BugGhostDark

½×

FightingPsychic

Moves

Psystrike 94.1% Nasty Plot 69.4% Earth Power 61.7% Tera Blast 36.8% Thunderbolt 27.1% Recover 26.9% Will-O-Wisp 26.3% Taunt 26.1%

Items

Life Orb 50.0% Rocky Helmet 26.3% Heavy-Duty Boots 17.6% Choice Specs 2.5% Focus Sash 1.3% Choice Scarf 0.7% Assault Vest 0.5% Psychium Z 0.3%

Abilities

Pressure97.3%Unnerve2.7%

Tera Types

Fairy 39.5% Electric 27.0% Steel 26.5% Fighting 4.3% Dark 0.9% Psychic 0.5% Ghost 0.3%

Common Teammates

Yveltal66.1%

Necrozma-Dusk-Mane47.4%

Groudon-Primal41.9%

Zacian-Crowned32.2%

Ogerpon-Hearthflame29.9%

Arceus29.1%

Slurpuff23.5%

Ribombee20.7%

Checks & Counters

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

# Checker Encounters Reliability KO Rate

Zacian-Crowned

FairySteel OFFENSIVE CHECK

124.475

63.2% dies 7.26%

DAMAGE CALC

+1 252+ Atk Zacian-Crowned Play Rough vs. 252 HP / 0 Def Mewtwo: 294-346 (70.6 - 83.1%) -- guaranteed 2HKO

View Zacian-Crowned counters → Teams with Zacian-Crowned →

Arceus

Normal DEFENSIVE COUNTER

20.751

55.4% dies 10.91%

DAMAGE CALC

252+ SpA Life Orb Mewtwo Psystrike vs. 252 HP / 0 Def Arceus: 227-269 (51.1 - 60.5%) -- guaranteed 2HKO

View Arceus counters → Teams with Arceus →

Marshadow

FightingGhost SOFT CHECK

109.159

50.9% dies 8.24%

DAMAGE CALC

252+ Atk Marshadow Poltergeist vs. 252 HP / 0 Def Mewtwo: 420-494 (100.9 - 118.7%) -- guaranteed OHKO

View Marshadow counters → Teams with Marshadow →

Kyogre-Primal

Water SOFT CHECK

72.754

50.0% dies 10.00%

DAMAGE CALCHeavy Rain

252+ SpA Kyogre-Primal Water Spout (150 BP) vs. 252 HP / 252+ SpD Mewtwo in Heavy Rain: 399-469 (95.9 - 112.7%) -- 75% chance to OHKO

View Kyogre-Primal counters → Teams with Kyogre-Primal →

Arceus-Ground

Ground SOFT CHECK

22.609

45.1% dies 10.47%

DAMAGE CALC

252+ Atk Earth Plate Arceus-Ground Earthquake vs. 252 HP / 0 Def Mewtwo: 222-262 (53.3 - 62.9%) -- guaranteed 2HKO

View Arceus-Ground counters → Teams with Arceus-Ground →

Groudon-Primal

GroundFire SOFT CHECK

160.723

36.2% dies 6.48%

DAMAGE CALCHarsh Sunshine

252+ Atk Groudon-Primal Heat Crash (120 BP) vs. 252 HP / 0 Def Mewtwo in Harsh Sunshine: 451-532 (108.4 - 127.8%) -- guaranteed OHKO

View Groudon-Primal counters → Teams with Groudon-Primal →

Necrozma-Dusk-Mane

PsychicSteel SOFT CHECK

98.611

35.2% dies 8.24%

DAMAGE CALC

0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Mewtwo: 157-186 (37.7 - 44.7%) -- guaranteed 3HKO

View Necrozma-Dusk-Mane counters → Teams with Necrozma-Dusk-Mane →

Yveltal

DarkFlying SOFT CHECK

158.646

31.0% dies 6.27%

DAMAGE CALC

0- Atk Life Orb Dark Aura Yveltal Knock Off (97.5 BP) vs. 252 HP / 0 Def Mewtwo: 452-533 (108.6 - 128.1%) -- guaranteed OHKO

View Yveltal counters → Teams with Yveltal →

Zygarde

DragonGround SOFT CHECK

99.134

29.2% dies 7.70%

DAMAGE CALC

252+ Atk Zygarde Outrage vs. 252 HP / 0 Def Mewtwo: 196-232 (47.1 - 55.7%) -- 78.5% chance to 2HKO

View Zygarde counters → Teams with Zygarde →

Ho-Oh

FireFlying SOFT CHECK

140.657

18.5% dies 5.63%

DAMAGE CALC

252+ Atk Ho-Oh Brave Bird vs. 252 HP / 0 Def Mewtwo: 235-277 (56.4 - 66.5%) -- guaranteed 2HKO

View Ho-Oh counters → Teams with Ho-Oh →

Eternatus

PoisonDragon SOFT CHECK

22.819

14.1% dies 7.28%

DAMAGE CALC

252+ SpA Eternatus Draco Meteor vs. 252 HP / 252+ SpD Mewtwo: 195-231 (46.8 - 55.5%) -- 72.7% chance to 2HKO

View Eternatus counters → Teams with Eternatus →

Ranked #21 with 6.32% usage. Sorted by reliability score.