Is Mewtwo viable in Gen 9 Ubers?

Mewtwo is ranked #46 in Gen 9 Ubers with 1.46% usage according to Smogon May 2026 - Jul 2026 data.

What beats Mewtwo in Gen 9 Ubers?

Arceus has the strongest conservative score in this observed May 2026 - Jul 2026 sample. The target was knocked out or switched out in 81.9% of 22.67641269668949 relevant encounters. Standard error is 8.1 points. Sets and switch conditions can change the result.

How are Mewtwo matchup checks ranked in Gen 9 Ubers?

They are ranked by p minus four standard errors. Here, p is the observed fraction of relevant encounters where Mewtwo was knocked out or switched out. This is not a set-specific battle guarantee.

Mewtwo counters

Gen 9 Ubers · Sorted by p − 4 standard errors · Smogon source period May 2026 - Jul 2026 · Generated 2026-08-05

#0150 Mewtwo

Psychic

USAGE 1.5% #46

ABILITYPressure

BASE STATS

HP 106

ATK 110

DEF 90

SPA 154

SPD 90

SPE 130

BST680

TYPE MATCHUPS

2×

BugGhostDark

½×

FightingPsychic

Moves

Psystrike 95.0% Nasty Plot 64.8% Fire Blast 52.1% Taunt 33.2% Ice Beam 27.0% Shadow Ball 13.9% Aura Sphere 13.2% Flamethrower 12.1%

Items

Life Orb 38.1% Focus Sash 15.9% Heavy-Duty Boots 14.0% Choice Scarf 12.0% Choice Specs 10.6% Leftovers 5.3% Salac Berry 0.8% Expert Belt 0.7%

Abilities

Pressure84.6%Unnerve15.4%

Tera Types

Fire 49.9% Ghost 13.6% Psychic 10.7% Dark 7.7% Steel 7.3% Water 3.3% Fairy 3.2% Fighting 1.2%

Common Teammates

Necrozma-Dusk-Mane45.7%

Psyduck22.5%

Leading observed checks

Open a matchup for a separate set-based damage estimate, or browse uploaded teams with both Pokémon.

Team core to explore

Mewtwo + Necrozma-Dusk-Mane 45.7% teammate usage Explore teams →

Checks & Counters

Observed target KO or switch rate is upstream p: the fraction of relevant encounters where the target was knocked out or switched out. Standard error is upstream d. The conservative score is p − 4d. These ladder observations do not prove a set-specific counter.

How to read this table

Use encounter count and standard error to judge the sample. Damage estimates below use inferred sets and remain separate from the observed ladder metric.

# Checker Encounters Conservative score Target KO or switch rate

Arceus

Normal DEFENSIVE CHECK View matchup

22.676

49.6

81.9% Standard error 8.08 points

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 →

Zacian-Crowned

FairySteel OFFENSIVE CHECK View matchup

42.056

31.6

61.6% Standard error 7.50 points

DAMAGE CALC

+1 252+ Atk Zacian-Crowned Crunch vs. 252 HP / 0 Def Mewtwo: 350-412 (84.1 - 99%) -- guaranteed 2HKO

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

Kyogre

Water SOFT CHECK View matchup

52.5

7.8

45.5% Standard error 9.42 points

DAMAGE CALCRain

252+ SpA Choice Specs Kyogre Water Spout (150 BP) vs. 252 HP / 252+ SpD Mewtwo in Rain: 519-612 (124.7 - 147.1%) -- guaranteed OHKO

View Kyogre counters → Teams with Kyogre →

Koraidon

FightingDragon SOFT CHECK View matchup

101.185

7.6

40.9% Standard error 8.31 points

DAMAGE CALCSun

252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Mewtwo in Sun: 323-381 (77.6 - 91.5%) -- guaranteed 2HKO

View Koraidon counters → Teams with Koraidon →

Necrozma-Dusk-Mane

PsychicSteel SOFT CHECK View matchup

30.612

4.1

39.4% Standard error 8.83 points

DAMAGE CALC

0- Atk Necrozma-Dusk-Mane Knock Off (97.5 BP) vs. 252 HP / 0 Def Mewtwo: 204-240 (49 - 57.6%) -- 96.1% chance to 2HKO

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

Ho-Oh

FireFlying SOFT CHECK View matchup

63.477

-0.8

31.8% Standard error 8.15 points

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 →

Ranked #46 with 1.46% usage. Sorted by conservative score.