Is Rillaboom viable in Gen 8 OU?

Rillaboom is ranked #16 in Gen 8 OU with 14.36% usage according to Smogon Apr 2026 - Jun 2026 data.

What beats Rillaboom in Gen 8 OU?

The best counter for Rillaboom in Gen 8 OU is Corviknight with a 23.5% win rate when they meet. Based on Smogon's Apr 2026 - Jun 2026 usage data, the top Pokémon that beat Rillaboom include Corviknight.

What is the best counter for Rillaboom in Gen 8 OU?

Corviknight is the best counter for Rillaboom in Gen 8 OU, KOing or forcing it out in 23.5% of their encounters.

Rillaboom counters

Gen 8 OU · Sorted by reliability score · Smogon · Apr 2026 - Jun 2026

#0812 Rillaboom

Grass

USAGE 14.4% #16

ABILITYGrassy Surge

BASE STATS

HP 100

ATK 125

DEF 90

SPA 60

SPD 70

SPE 85

BST530

TYPE MATCHUPS

2×

FireIcePoisonFlyingBug

½×

WaterElectricGrassGround

Moves

Grassy Glide 99.3% Knock Off 91.8% Swords Dance 72.8% Superpower 58.2% Wood Hammer 27.1% Drain Punch 23.9% U-turn 23.8% Acrobatics 1.0%

Items

Life Orb 33.8% Leftovers 28.7% Choice Band 24.0% Coba Berry 4.8% Lum Berry 1.9% Assault Vest 1.9% Muscle Band 1.7% Terrain Extender 1.1%

Abilities

Grassy Surge100.0%Overgrow0.0%

Common Teammates

Heatran50.1%

Garchomp32.3%

Blaziken24.1%

Landorus-Therian23.9%

Tornadus-Therian23.5%

Clefable21.2%

Urshifu-Rapid-Strike21.0%

Dragapult19.1%

Browse Gen 8 OU teams using Rillaboom →

Teams using Corviknight 24%

Checks & Counters

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

# Checker Encounters Reliability KO Rate

Corviknight

FlyingSteel SOFT CHECK

27.297

23.5% dies 8.12%

DAMAGE CALCGrassy Terrain

252+ Atk Corviknight Brave Bird vs. 252 HP / 0 Def Rillaboom: 360-426 (89.1 - 105.4%) -- 31.3% chance to OHKO

View Corviknight counters → Teams with Corviknight →

Ranked #16 with 14.36% usage. Sorted by reliability score.