PTB
Rillaboom, a Grass type Pokémon, official artwork

#0812

Rillaboom: Weakness, Best Moveset & Builds

GrassOU

Rillaboom is a straightforward attacker, led by its Attack (125) and HP (100), with a base stat total of 530. Competitively it is a staple of OverUsed, the main competitive singles tier. It currently appears on 7.3% of OU teams.

Build a team with Rillaboom

What is Rillaboom weak to?

How much damage Rillaboom takes from each attacking type.

2×Weak toBugFireFlyingIcePoison
0.5×ResistsElectricGrassGroundWater

Rillaboom takes super-effective damage from Bug, Fire, Flying, Ice, Poison. It resists Electric, Grass, Ground, Water.

Best moveset for Rillaboom

The most-used moves on Rillaboom in OU (Smogon singles) this month (2026-07 usage statistics):

  • Grassy GlideGrass5525.5%
  • Knock OffDark6524.5%
  • Wood HammerGrass12014.6%
  • U-turnBug7013.3%
  • Swords DanceNormal-11.1%
  • High HorsepowerGround956.2%

Best nature for Rillaboom

Adamant. It is the most common choice on ranked sets right now; the top spread is Adamant with 0/252/0/0/4/252 EVs (37.5% of sets).

Abilities

  • OvergrowAt 1/3 or less of its max HP, this Pokemon's offensive stat is 1.5x with Grass attacks.
  • Grassy SurgeOn switch-in, this Pokemon summons Grassy Terrain.

Evolution line

Grookey
Thwackey
Rillaboom

Best counters for Rillaboom

Based on OU (Smogon singles) battle statistics, these Pokémon most reliably beat or force out Rillaboom:

Best teammates for Rillaboom

Pokémon most often paired with Rillaboom on successful OU (Smogon singles) teams. Start from one of these cores, then check your coverage in the team builder:

Full learnset (66 moves; tap to expand)
MoveTypePowerAcc.Category
Focus PunchFighting150100%Physical
Frenzy PlantGrass15090%Special
Giga ImpactNormal15090%Physical
Hyper BeamNormal15090%Special
BoomburstNormal140100%Special
Leaf StormGrass13090%Special
Solar BladeGrass125100%Physical
Double-EdgeNormal120100%Physical
Focus BlastFighting12070%Special
Solar BeamGrass120100%Special
Wood HammerGrass120100%Physical
EarthquakeGround100100%Physical
High HorsepowerGround9595%Physical
Earth PowerGround90100%Special
Energy BallGrass90100%Special
Hyper VoiceNormal90100%Special
Take DownNormal9085%Physical
UproarNormal90100%Special
Body SlamNormal85100%Physical
Body PressFighting80100%Physical
Drum BeatingGrass80100%Physical
Grass PledgeGrass80100%Special
Seed BombGrass80100%Physical
SlamNormal8075%Physical
Tera BlastNormal80100%Special
Brick BreakFighting75100%Physical
Drain PunchFighting75100%Physical
Giga DrainGrass75100%Special
Stomping TantrumGround75100%Physical
FacadeNormal70100%Physical
U-turnBug70100%Physical
Knock OffDark65100%Physical
Low SweepFighting65100%Physical
BulldozeGround60100%Physical
Magical LeafGrass60-Special
SwiftNormal60-Special
ThiefDark60100%Physical
AcrobaticsFlying55100%Physical
Grassy GlideGrass55100%Physical
Mud ShotGround5595%Special
Razor LeafGrass5595%Physical
SnarlDark5595%Special
TrailblazeGrass50100%Physical
Branch PokeGrass40100%Physical
False SwipeNormal40100%Physical
ScratchNormal40100%Physical
Double HitNormal3590%Physical
Bullet SeedGrass25100%Physical
EndeavorNormal?100%Physical
FlingDark?100%Physical
Grass KnotGrass?100%Special
Low KickFighting?100%Physical
Bulk UpFighting--Status
EndureNormal--Status
Grassy TerrainGrass--Status
GrowlNormal-100%Status
Noble RoarNormal-100%Status
ProtectNormal--Status
RestPsychic--Status
Scary FaceNormal-100%Status
ScreechNormal-85%Status
Sleep TalkNormal--Status
SubstituteNormal--Status
Sunny DayFire--Status
Swords DanceNormal--Status
TauntDark-100%Status