Is Rillaboom viable in Gen 8 OU?

Rillaboom is ranked #14 in Gen 8 OU with 16.41% usage according to Smogon Feb 2026 - Apr 2026 data.

What beats Rillaboom in Gen 8 OU?

The best counter for Rillaboom in Gen 8 OU is Heatran with a 50.9% win rate when they meet. Based on Smogon's Feb 2026 - Apr 2026 usage data, the top Pokémon that beat Rillaboom include Heatran, Weavile, Tapu Lele, Dragapult, Clefable.

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

Heatran is the best counter for Rillaboom in Gen 8 OU, KOing or forcing it out in 50.9% of their encounters.

Rillaboom counters

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

#0812 Rillaboom

Grass

USAGE 16.4% #14

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 99.7% Knock Off 86.9% Swords Dance 80.4% Superpower 69.7% Wood Hammer 24.5% Drain Punch 20.2% U-turn 17.4% Acrobatics 0.3%

Items

Leftovers 36.7% Life Orb 31.7% Choice Band 18.5% Coba Berry 6.8% Terrain Extender 2.4% Heavy-Duty Boots 1.0% Muscle Band 1.0% Lum Berry 0.9%

Abilities

Grassy Surge99.9%Overgrow0.1%

Common Teammates

Heatran48.0%

Garchomp33.8%

Tornadus-Therian31.9%

Landorus-Therian26.0%

Checks & Counters

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

# Checker Encounters Reliability KO Rate

Heatran

FireSteel SOFT CHECK

23.804

50.9% dies 10.25%

DAMAGE CALCGrassy Terrain

252+ SpA Heatran Magma Storm vs. 252 HP / 252+ SpD Rillaboom: 324-384 (80.1 - 95%) -- guaranteed 2HKO after Leftovers recovery, Grassy Terrain recovery, and trapping damage

View Heatran counters → Teams with Heatran →

Weavile

DarkIce SOFT CHECK

22.544

49.5% dies 10.53%

DAMAGE CALCGrassy Terrain

252+ Atk Weavile Triple Axel (120 BP) (3 hits) vs. 252 HP / 0 Def Rillaboom: 446-530 (110.3 - 131.1%) -- guaranteed OHKO

View Weavile counters → Teams with Weavile →

Tapu Lele

PsychicFairy SOFT CHECK

34.775

43.8% dies 8.41%

DAMAGE CALCPsychic Terrain

252+ SpA Tapu Lele Future Sight vs. 252 HP / 252+ SpD Rillaboom in Psychic Terrain: 253-298 (62.6 - 73.7%) -- guaranteed 2HKO after Leftovers recovery

View Tapu Lele counters → Teams with Tapu Lele →

Dragapult

DragonGhost SOFT CHECK

24.502

39.7% dies 9.88%

DAMAGE CALCGrassy Terrain

252+ SpA Choice Specs Dragapult Draco Meteor vs. 252 HP / 252+ SpD Rillaboom: 262-310 (64.8 - 76.7%) -- guaranteed 2HKO after Leftovers recovery and Grassy Terrain recovery

View Dragapult counters → Teams with Dragapult →

Clefable

Fairy SOFT CHECK

20.844

33.4% dies 10.33%

DAMAGE CALCGrassy Terrain

252+ SpA Clefable Flamethrower vs. 252 HP / 252+ SpD Rillaboom: 158-186 (39.1 - 46%) -- 73.5% chance to 3HKO after Leftovers recovery and Grassy Terrain recovery

View Clefable counters → Teams with Clefable →

Tornadus-Therian

Flying SOFT CHECK

51.405

32.6% dies 6.54%

DAMAGE CALCGrassy Terrain

0- SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Rillaboom: 210-248 (51.9 - 61.3%) -- 58.2% chance to 2HKO after Leftovers recovery and Grassy Terrain recovery

View Tornadus-Therian counters → Teams with Tornadus-Therian →

Garchomp

DragonGround SOFT CHECK

30.522

27.1% dies 8.05%

DAMAGE CALCGrassy Terrain

252+ Atk Garchomp Fire Fang vs. 252 HP / 0 Def Rillaboom: 170-202 (42 - 50%) -- guaranteed 3HKO after Leftovers recovery and Grassy Terrain recovery

View Garchomp counters → Teams with Garchomp →

Ferrothorn

GrassSteel SOFT CHECK

30.072

18.9% dies 7.14%

DAMAGE CALCGrassy Terrain

252+ Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Rillaboom in Grassy Terrain: 123-144 (30.4 - 35.6%) -- 6.1% chance to 4HKO after Leftovers recovery and Grassy Terrain recovery

View Ferrothorn counters → Teams with Ferrothorn →

Urshifu-Rapid-Strike

FightingWater SOFT CHECK

31.438

14.0% dies 6.18%

DAMAGE CALCGrassy Terrain

252+ Atk Choice Band Urshifu-Rapid-Strike Close Combat vs. 252 HP / 0 Def Rillaboom: 352-415 (87.1 - 102.7%) -- 18.8% chance to OHKO

View Urshifu-Rapid-Strike counters → Teams with Urshifu-Rapid-Strike →

Landorus-Therian

GroundFlying SOFT CHECK

64.552

11.8% dies 5.42%

DAMAGE CALCGrassy Terrain

252+ Atk Landorus-Therian U-turn vs. 252 HP / 0 Def Rillaboom: 200-236 (49.5 - 58.4%) -- 13.3% chance to 2HKO after Leftovers recovery and Grassy Terrain recovery

View Landorus-Therian counters → Teams with Landorus-Therian →

Ranked #14 with 16.41% usage. Sorted by reliability score.