Is Mewtwo-Mega-X viable in Gen 9 National Dex Ubers?

Mewtwo-Mega-X is ranked #33 in Gen 9 National Dex Ubers with 3.64% usage according to Smogon Feb 2026 - Apr 2026 data.

What beats Mewtwo-Mega-X in Gen 9 National Dex Ubers?

The best counter for Mewtwo-Mega-X in Gen 9 National Dex Ubers is Zacian-Crowned with a 84.1% win rate when they meet. Based on Smogon's Feb 2026 - Apr 2026 usage data, the top Pokémon that beat Mewtwo-Mega-X include Zacian-Crowned, Marshadow, Groudon-Primal, Necrozma-Dusk-Mane, Zygarde.

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

Zacian-Crowned is the best counter for Mewtwo-Mega-X in Gen 9 National Dex Ubers, KOing or forcing it out in 84.1% of their encounters.

Mewtwo-Mega-X counters

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

#0150 Mewtwo-Mega-X

PsychicFighting

USAGE 3.6% #33

BASE STATS

HP 106

ATK 190

DEF 100

SPA 154

SPD 100

SPE 130

BST780

TYPE MATCHUPS

2×

FlyingGhostFairy

½×

FightingRock

Moves

Low Kick 95.9% Ice Beam 85.4% Stone Edge 79.5% Electro Ball 33.2% Psychic 32.1% Zen Headbutt 11.9% Taunt 10.3% Knock Off 9.3%

Items

Mewtwonite X 100.0%

Common Teammates

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

89.467

84.1% dies 6.47%

DAMAGE CALC

+1 252+ Atk Zacian-Crowned Play Rough vs. 252 HP / 0 Def Mewtwo-Mega-X: 540-636 (129.8 - 152.8%) -- guaranteed OHKO

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

Marshadow

FightingGhost OFFENSIVE CHECK

24.587

79.3% dies 8.17%

DAMAGE CALC

252+ Atk Marshadow Poltergeist vs. 252 HP / 0 Def Mewtwo-Mega-X: 384-452 (92.3 - 108.6%) -- 50% chance to OHKO

View Marshadow counters → Teams with Marshadow →

Groudon-Primal

GroundFire OFFENSIVE CHECK

60.933

57.5% dies 8.89%

DAMAGE CALCHarsh Sunshine

252+ Atk Groudon-Primal Heat Crash (120 BP) vs. 252 HP / 0 Def Mewtwo-Mega-X in Harsh Sunshine: 414-487 (99.5 - 117%) -- 93.8% chance to OHKO

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

Necrozma-Dusk-Mane

PsychicSteel SOFT CHECK

27.274

40.4% dies 9.39%

DAMAGE CALC

0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Mewtwo-Mega-X: 144-171 (34.6 - 41.1%) -- guaranteed 3HKO

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

Zygarde

DragonGround SOFT CHECK

39.01

40.1% dies 7.85%

DAMAGE CALC

252+ Atk Zygarde Outrage vs. 252 HP / 0 Def Mewtwo-Mega-X: 180-213 (43.2 - 51.2%) -- 5.1% chance to 2HKO

View Zygarde counters → Teams with Zygarde →

Eternatus

PoisonDragon SOFT CHECK

21.076

35.2% dies 10.40%

DAMAGE CALC

252+ SpA Eternatus Draco Meteor vs. 252 HP / 252+ SpD Mewtwo-Mega-X: 183-216 (43.9 - 51.9%) -- 10.9% chance to 2HKO

View Eternatus counters → Teams with Eternatus →

Yveltal

DarkFlying SOFT CHECK

59.492

33.6% dies 8.43%

DAMAGE CALC

0- Atk Life Orb Dark Aura Yveltal Foul Play vs. 252 HP / 0 Def Mewtwo-Mega-X: 278-329 (66.8 - 79%) -- guaranteed 2HKO

View Yveltal counters → Teams with Yveltal →

Ho-Oh

FireFlying SOFT CHECK

102.496

25.9% dies 7.27%

DAMAGE CALC

252+ Atk Ho-Oh Brave Bird vs. 252 HP / 0 Def Mewtwo-Mega-X: 432-510 (103.8 - 122.5%) -- guaranteed OHKO

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

Kyogre-Primal

Water SOFT CHECK

24.218

19.3% dies 8.03%

DAMAGE CALCHeavy Rain

252+ SpA Kyogre-Primal Water Spout (150 BP) vs. 252 HP / 252+ SpD Mewtwo-Mega-X in Heavy Rain: 372-438 (89.4 - 105.2%) -- 31.3% chance to OHKO

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

Arceus-Dark

Dark SOFT CHECK

21.486

5.4% dies 4.88%

DAMAGE CALC

0- Atk Dread Plate Arceus-Dark Foul Play vs. 252 HP / 0 Def Mewtwo-Mega-X: 195-229 (46.8 - 55%) -- 67.2% chance to 2HKO

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

Ranked #33 with 3.64% usage. Sorted by reliability score.