Is Mewtwo viable in Gen 9 National Dex Ubers?

Mewtwo is ranked #25 in Gen 9 National Dex Ubers with 5.12% usage according to Smogon Apr 2026 - Jun 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 64.0% win rate when they meet. Based on Smogon's Apr 2026 - Jun 2026 usage data, the top Pokémon that beat Mewtwo include Zacian-Crowned, Marshadow, Kyogre-Primal, Necrozma-Dusk-Mane, Arceus-Dark.

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 64.0% of their encounters.

Mewtwo counters

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

#0150 Mewtwo

Psychic

USAGE 5.1% #25

ABILITYPressure

BASE STATS

HP 106

ATK 110

DEF 90

SPA 154

SPD 90

SPE 130

BST680

TYPE MATCHUPS

2×

BugGhostDark

½×

FightingPsychic

Moves

Psystrike 95.6% Nasty Plot 73.3% Earth Power 58.9% Tera Blast 39.0% Taunt 25.1% Recover 22.0% Will-O-Wisp 21.3% Thunderbolt 18.6%

Items

Life Orb 41.0% Heavy-Duty Boots 23.6% Rocky Helmet 21.0% Leftovers 4.4% Choice Specs 3.6% Kasib Berry 2.5% Focus Sash 2.0% Fightinium Z 0.5%

Abilities

Pressure96.0%Unnerve4.0%

Tera Types

Fairy 42.3% Steel 24.9% Electric 18.5% Fighting 5.4% Dark 4.5% Grass 1.5% Psychic 0.8%

Common Teammates

Yveltal53.2%

Necrozma-Dusk-Mane42.5%

Groudon-Primal37.9%

Zacian-Crowned32.8%

Arceus-Ground28.1%

Ogerpon-Hearthflame28.1%

Slurpuff27.9%

Marshadow27.3%

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

96.811

64.0% dies 8.24%

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 →

Marshadow

FightingGhost SOFT CHECK

55.783

45.4% dies 9.19%

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

20.854

43.6% dies 10.86%

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 →

Necrozma-Dusk-Mane

PsychicSteel SOFT CHECK

53.788

37.8% dies 9.34%

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 →

Arceus-Dark

Dark SOFT CHECK

25.856

34.7% dies 9.36%

DAMAGE CALC

252+ SpA Dread Plate Arceus-Dark Judgment vs. 252 HP / 252+ SpD Mewtwo: 314-372 (75.4 - 89.4%) -- guaranteed 2HKO

View Arceus-Dark counters → Teams with Arceus-Dark →

Groudon-Primal

GroundFire SOFT CHECK

116.985

33.8% dies 7.45%

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 →

Yveltal

DarkFlying SOFT CHECK

120.824

31.8% dies 7.21%

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

91.567

25.1% dies 7.76%

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

117.311

14.8% dies 5.67%

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 #25 with 5.12% usage. Sorted by reliability score.