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

Mewtwo-Mega-Y is ranked #32 in Gen 9 National Dex Ubers with 3.72% usage according to Smogon Feb 2026 - Apr 2026 data.

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

The best counter for Mewtwo-Mega-Y in Gen 9 National Dex Ubers is Yveltal with a 61.2% win rate when they meet. Based on Smogon's Feb 2026 - Apr 2026 usage data, the top Pokémon that beat Mewtwo-Mega-Y include Yveltal, Zacian-Crowned, Necrozma-Dusk-Mane, Groudon-Primal, Ho-Oh.

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

Yveltal is the best counter for Mewtwo-Mega-Y in Gen 9 National Dex Ubers, KOing or forcing it out in 61.2% of their encounters.

Mewtwo-Mega-Y counters

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

#0150 Mewtwo-Mega-Y

Psychic

USAGE 3.7% #32

BASE STATS

HP 106

ATK 150

DEF 70

SPA 194

SPD 120

SPE 140

BST780

TYPE MATCHUPS

2×

BugGhostDark

½×

FightingPsychic

Moves

Psystrike 95.4% Nasty Plot 71.4% Ice Beam 62.7% Earth Power 32.2% Fire Blast 29.3% Aura Sphere 26.4% Thunderbolt 15.5% Focus Blast 13.3%

Items

Mewtwonite Y 100.0%

Common Teammates

Necrozma-Dusk-Mane31.6%

Marshadow30.4%

Arceus25.4%

Arceus-Fairy18.0%

Checks & Counters

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

# Checker Encounters Reliability KO Rate

Yveltal

DarkFlying OFFENSIVE CHECK

53.071

61.2% dies 9.39%

DAMAGE CALC

0- Atk Life Orb Dark Aura Yveltal Foul Play vs. 252 HP / 0 Def Mewtwo-Mega-Y: 603-712 (144.9 - 171.1%) -- guaranteed OHKO

View Yveltal counters → Teams with Yveltal →

Zacian-Crowned

FairySteel OFFENSIVE CHECK

20.914

59.2% dies 10.75%

DAMAGE CALC

+1 252+ Atk Zacian-Crowned Play Rough vs. 252 HP / 0 Def Mewtwo-Mega-Y: 361-426 (86.7 - 102.4%) -- 18.8% chance to OHKO

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

Necrozma-Dusk-Mane

PsychicSteel OFFENSIVE CHECK

21.528

56.6% dies 10.68%

DAMAGE CALC

0- Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Mewtwo-Mega-Y: 193-228 (46.3 - 54.8%) -- 59% chance to 2HKO

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

Groudon-Primal

GroundFire SOFT CHECK

23.995

38.1% dies 9.91%

DAMAGE CALCHarsh Sunshine

252+ Atk Groudon-Primal Heat Crash (120 BP) vs. 252 HP / 0 Def Mewtwo-Mega-Y in Harsh Sunshine: 553-652 (132.9 - 156.7%) -- guaranteed OHKO

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

Ho-Oh

FireFlying SOFT CHECK

30.711

29.7% dies 8.24%

DAMAGE CALC

252+ Atk Ho-Oh Brave Bird vs. 252 HP / 0 Def Mewtwo-Mega-Y: 288-340 (69.2 - 81.7%) -- guaranteed 2HKO

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

Eternatus

PoisonDragon SOFT CHECK

24.317

12.1% dies 6.62%

DAMAGE CALC

252+ SpA Eternatus Draco Meteor vs. 252 HP / 252+ SpD Mewtwo-Mega-Y: 160-190 (38.4 - 45.6%) -- guaranteed 3HKO

View Eternatus counters → Teams with Eternatus →

Ranked #32 with 3.72% usage. Sorted by reliability score.