Is Mewtwo-Mega-X viable in Gen 6 Pure Hackmons?

Mewtwo-Mega-X is ranked #1 in Gen 6 Pure Hackmons with 63.98% usage according to Smogon May 2026 - Jul 2026 data.

What beats Mewtwo-Mega-X in Gen 6 Pure Hackmons?

Mewtwo-Mega-X has the strongest conservative score in this observed May 2026 - Jul 2026 sample. The target was knocked out or switched out in 48.6% of 276.3859364242921 relevant encounters. Standard error is 5.1 points. Sets and switch conditions can change the result.

How are Mewtwo-Mega-X matchup checks ranked in Gen 6 Pure Hackmons?

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

Mewtwo-Mega-X counters

Gen 6 Pure Hackmons · Sorted by p − 4 standard errors · Smogon source period May 2026 - Jul 2026 · Generated 2026-08-05

#0150 Mewtwo-Mega-X

PsychicFighting

USAGE 64.0% #1

ABILITYHuge Power

BASE STATS

HP 106

ATK 190

DEF 100

SPA 154

SPD 100

SPE 130

BST780

TYPE MATCHUPS

2×

FlyingGhostFairy

½×

FightingRock

Moves

Shadow Sneak 46.5% Extreme Speed 34.6% Mach Punch 27.9% Focus Energy 26.8% Play Rough 24.0% Thousand Arrows 20.4% Bonemerang 18.8% Sacred Fire 18.2%

Items

Scope Lens 26.8% Expert Belt 15.3% Shed Shell 11.0% Life Orb 10.3% Lum Berry 9.4% Leftovers 6.4% Choice Scarf 5.7% Focus Sash 5.6%

Abilities

Huge Power35.8%Mold Breaker29.1%Wonder Guard14.9%Shadow Tag8.3%Pixilate3.7%Pure Power2.6%Magic Bounce1.6%No Guard1.3%

Common Teammates

Leading observed checks

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

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

Mewtwo-Mega-X

PsychicFighting SOFT CHECK View matchup

276.386

28.3

48.6% Standard error 5.07 points

DAMAGE CALC

252+ Atk Huge Power Mewtwo-Mega-X Play Rough vs. 252 HP / 0 Def Mewtwo-Mega-X: 574-676 (137.9 - 162.5%) -- guaranteed OHKO

View Mewtwo-Mega-X counters →

Rayquaza-Mega

DragonFlying SOFT CHECK View matchup

155.327

24.3

51.8% Standard error 6.88 points

DAMAGE CALC

252+ SpA Rayquaza-Mega Oblivion Wing vs. 252 HP / 252+ SpD Mewtwo-Mega-X: 266-314 (63.9 - 75.4%) -- guaranteed 2HKO

View Rayquaza-Mega counters →

Manectric-Mega

Electric OFFENSIVE CHECK View matchup

34.183

23.2

57.0% Standard error 8.47 points

DAMAGE CALC

252+ SpA Manectric-Mega Volt Switch vs. 252 HP / 252+ SpD Mewtwo-Mega-X: 93-111 (22.3 - 26.6%) -- 22% chance to 4HKO

View Manectric-Mega counters →

Blissey

Normal SOFT CHECK View matchup

37.613

16.3

48.9% Standard error 8.15 points

Giratina

GhostDragon SOFT CHECK View matchup

237.076

13.5

34.4% Standard error 5.23 points

Chansey

Normal SOFT CHECK View matchup

132.063

13.4

42.4% Standard error 7.25 points

DAMAGE CALC

252+ SpA Chansey Chatter vs. 252 HP / 252+ SpD Mewtwo-Mega-X: 54-64 (12.9 - 15.3%) -- possible 7HKO

View Chansey counters →

Groudon-Primal

GroundFire SOFT CHECK View matchup

172.672

13.4

37.7% Standard error 6.09 points

DAMAGE CALC

252+ Atk Groudon-Primal V-create vs. 252 HP / 0 Def Mewtwo-Mega-X: 412-486 (99 - 116.8%) -- 93.8% chance to OHKO

View Groudon-Primal counters →

Regigigas

Normal SOFT CHECK View matchup

73.269

7.4

38.9% Standard error 7.89 points

DAMAGE CALC

252+ Atk Regigigas Extreme Speed vs. 252 HP / 0 Def Mewtwo-Mega-X: 168-198 (40.3 - 47.5%) -- guaranteed 3HKO

View Regigigas counters →

Lopunny-Mega

NormalFighting SOFT CHECK View matchup

20.9

6.2

50.0% Standard error 10.94 points

DAMAGE CALC

252+ Atk Lopunny-Mega Knock Off (97.5 BP) vs. 252 HP / 0 Def Mewtwo-Mega-X: 120-142 (28.8 - 34.1%) -- 2.1% chance to 3HKO

View Lopunny-Mega counters →

Xerneas

Fairy SOFT CHECK View matchup

113.565

5.6

36.4% Standard error 7.71 points

DAMAGE CALC

252+ SpA Xerneas Moonblast vs. 252 HP / 252+ SpD Mewtwo-Mega-X: 248-294 (59.6 - 70.6%) -- guaranteed 2HKO

View Xerneas counters →

Gengar-Mega

GhostPoison SOFT CHECK View matchup

108.749

5.0

36.1% Standard error 7.77 points

DAMAGE CALC

252+ SpA Spooky Plate Gengar-Mega Judgment vs. 252 HP / 252+ SpD Mewtwo-Mega-X: 380-450 (91.3 - 108.1%) -- 50% chance to OHKO

View Gengar-Mega counters →

Kyogre-Primal

Water SOFT CHECK View matchup

149.711

4.2

28.4% Standard error 6.05 points

DAMAGE CALC

252+ SpA Kyogre-Primal Scald vs. 252 HP / 252+ SpD Mewtwo-Mega-X: 133-157 (31.9 - 37.7%) -- 93% chance to 3HKO

View Kyogre-Primal counters →

Deoxys-Speed

Psychic SOFT CHECK View matchup

134.173

3.7

30.6% Standard error 6.74 points

Gyarados-Mega

WaterDark SOFT CHECK View matchup

175.284

1.9

23.8% Standard error 5.50 points

DAMAGE CALC

0- Atk Huge Power Gyarados-Mega Knock Off (97.5 BP) vs. 252 HP / 0 Def Mewtwo-Mega-X: 274-324 (65.8 - 77.8%) -- guaranteed 2HKO

View Gyarados-Mega counters →

Beedrill-Mega

BugPoison SOFT CHECK View matchup

51.032

1.8

40.3% Standard error 9.61 points

DAMAGE CALC

252+ Atk Beedrill-Mega Poison Jab vs. 252 HP / 0 Def Mewtwo-Mega-X: 160-189 (38.4 - 45.4%) -- guaranteed 3HKO

View Beedrill-Mega counters →

Diancie-Mega

RockFairy SOFT CHECK View matchup

20.773

-0.4

43.0% Standard error 10.86 points

DAMAGE CALC

252+ Atk Pixie Plate Pixilate Diancie-Mega Extreme Speed vs. 252 HP / 0 Def Mewtwo-Mega-X: 524-618 (125.9 - 148.5%) -- guaranteed OHKO

View Diancie-Mega counters →

Slaking

Normal SOFT CHECK View matchup

59.609

-4.9

27.8% Standard error 8.16 points

DAMAGE CALC

252+ Atk Slaking Extreme Speed vs. 252 HP / 0 Def Mewtwo-Mega-X: 168-198 (40.3 - 47.5%) -- guaranteed 3HKO

View Slaking counters →

Arceus

Normal SOFT CHECK View matchup

67.9

-5.7

23.1% Standard error 7.22 points

Aegislash

SteelGhost SOFT CHECK View matchup

33.999

-7.0

20.9% Standard error 6.98 points

Audino-Mega

NormalFairy SOFT CHECK View matchup

40.877

-7.0

15.9% Standard error 5.72 points

DAMAGE CALC

252+ SpA Audino-Mega Moonblast vs. 252 HP / 252+ SpD Mewtwo-Mega-X: 180-212 (43.2 - 50.9%) -- 4.7% chance to 2HKO

View Audino-Mega counters →

Sableye-Mega

DarkGhost SOFT CHECK View matchup

21.882

-10.2

28.3% Standard error 9.63 points

Scizor-Mega

BugSteel SOFT CHECK View matchup

31.556

-10.8

13.6% Standard error 6.10 points

DAMAGE CALC

252+ Atk Scizor-Mega Gear Grind (2 hits) vs. 252 HP / 0 Def Mewtwo-Mega-X: 200-236 (48 - 56.7%) -- 95.4% chance to 2HKO

View Scizor-Mega counters →

Ranked #1 with 63.98% usage. Sorted by conservative score.