Is Coalossal viable in Gen 9 Ultramixandmega?

Coalossal is ranked #1 in Gen 9 Ultramixandmega with 71.45% usage according to Smogon Apr 2026 - Jun 2026 data.

What beats Coalossal in Gen 9 Ultramixandmega?

Coalossal has the strongest conservative score in this observed Apr 2026 - Jun 2026 sample. The target was knocked out or switched out in 41.5% of 34.14926602083656 relevant encounters. Standard error is 8.4 points. Sets and switch conditions can change the result.

How are Coalossal matchup checks ranked in Gen 9 Ultramixandmega?

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

Coalossal counters

Gen 9 Ultramixandmega · Sorted by p − 4 standard errors · Smogon source period Apr 2026 - Jun 2026 · Generated 2026-07-10

#0839 Coalossal

RockFire

USAGE 71.5% #1

ABILITYUnaware

BASE STATS

HP 110

ATK 80

DEF 120

SPA 80

SPD 90

SPE 30

BST510

TYPE MATCHUPS

4×

WaterGround

2×

FightingRock

½×

NormalIcePoisonFlyingBugFairy

¼×

Fire

Moves

Recover 67.6% Chilly Reception 65.2% Rage Fist 63.5% Rapid Spin 61.5% Roost 32.9% Earthquake 30.6% Ruination 25.1% Court Change 20.2%

Items

Scolipite 82.4% Leftovers 5.1% Toxic Orb 3.1% Ability Shield 2.4% Sablenite 1.7% Crabominite 1.6% Salamencite 1.1% Tyranitarite 0.5%

Abilities

Unaware70.5%Poison Heal6.9%Shadow Shield6.0%Magic Guard4.2%Sap Sipper2.7%Intimidate1.9%Regenerator1.8%Dauntless Shield1.7%

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

Coalossal

RockFire SOFT CHECK View matchup

34.149

7.8

41.5% Standard error 8.43 points

DAMAGE CALC

252+ Atk Coalossal Earthquake vs. 252 HP / 0 Def Coalossal: 296-352 (69.8 - 83%) -- guaranteed 2HKO

View Coalossal counters →

Greedent

Normal SOFT CHECK View matchup

20.491

-9.8

31.2% Standard error 10.23 points

DAMAGE CALC

252+ Atk Greedent Earthquake vs. 252 HP / 0 Def Coalossal: 332-392 (78.3 - 92.4%) -- guaranteed 2HKO

View Greedent counters →

Ranked #1 with 71.45% usage. Sorted by conservative score.