Rillaboom Best Moveset
AbilityGrassy Surge sets Grassy Terrain on entry, and MoveGrassy Glide becomes priority on Grassy Terrain. Held ItemChoice Band with NatureAdamant at 125 Attack fires priority Grass TermStab that outspeeds everything regardless of Speed stat. The moveset ignores Speed tiers entirely through priority. MoveU-turn pivots and resets Terrain on re-entry. S-Tier through priority Grassy Glide.
Grassy Surge set Grassy Terrain on entry in Gen VIII (Sword & Shield). Grassy Glide had priority in terrain. Wood Hammer hit hard. The best Grass pivot at the top tier.
Best Moves
Best Build
Rillaboom best EVs are Attack and Speed
Physical Setup Sweeper Moveset
- Grassy Glide
- Knock Off
- Swords Dance
- U Turn
Recommended Teammates
Two gens at the top in Gen IX (Scarlet & Violet). Grassy Glide priority in Grassy Terrain was the formula. No other Grass-type combined terrain setting with priority STAB.
Physical Sweeper Moveset
- Grassy Glide
- Knock Off
- U Turn
- Wood Hammer
Recommended Teammates
Rillaboom Weakness
Rillaboom is weak to Fire, Ice, Poison, Flying, and Bug. The Grass typing picks up 4 resistances to work with. That's a lot of weak spots to cover so team support is important.
| Damage | Types |
|---|---|
| 2x (Weak) | Fire, Ice, Poison, Flying, Bug |
| 0.5x (Resist) | Water, Electric, Grass, Ground |
What is Rillaboom Weak Against
FragileBest Pokemon Against Rillaboom
A | ||
Recommended Build AbilityRegenerator ItemHeavy-Duty Boots NatureRelaxed Moves
Damage vs Rillaboom View Alomomola builds →Flip Turn6-6% Scald6-7% | ||
B | ||
Recommended Build AbilityNatural Cure ItemLeftovers NatureCalm Moves View Blissey builds →
| ||
C | ||
Recommended Build AbilityRegenerator ItemHeavy-Duty Boots NatureSassy Moves
Damage vs Rillaboom View Slowking builds →Scald11-13% | ||
C | ||
Recommended Build AbilitySandrush ItemHeavy-Duty Boots NatureAdamant Moves
Damage vs Rillaboom View Sandslash builds →Rapid Spin16-19% Earthquake16-19% Knock Off21-25% | ||
Recommended Build AbilityGalvanize ItemCustapberry NatureAdamant Moves View Golem-Alola builds →
| ||
Evolution
The three-stage chain from Grookey through Thwackey ends here at Rillaboom. Want more? Breed for Grookey eggs. A massive partner pool available via two egg groups. The evolution from Grookey pushed Rillaboom to 530 total stats. Attack saw the largest single gain at +60. View every chain in the Evolution Chart.
How to Evolve
How to Get Rillaboom
You're catching Grookey first, not Rillaboom. Grookey appears at moderate rates in the encounters below. The step cards map the full 3-stage chain with evolution methods between each stage.
No wild encounters for Rillaboom in Sword & Shield. Bring Grookey over from Scarlet & Violet, then level through the stages. Each step in the chain is laid out below.
How to Obtain Rillaboom in SwSh
Step 1Obtain GrookeyBREEDINGAvailableLeave Thwackey with a compatible partner at the Pokemon Day Care to receive a Grookey egg.LATER APPEARANCEfrom Scarlet & VioletNot TradeableAppears in Scarlet & Violet via Overworld · Coastal Biome. Forward-only transfer — no path back to this game from a later one.
Step 2Evolve into Thwackey
Step 3Rillaboom ✓
Base Stats
Nothing fancy in Rillaboom's spread. It leans physical with Attack out front. And you'll get 3 Attack EVs per KO for it. Follows a 1.06M XP medium-slow curve.
Rillaboom has become one with its forest of drums and continues to lay down beats that shake all of Galar.
Rillaboom Guide
Rillaboom works as a wallbreaker with 530 BST behind it. A-Tier on our list: a strong competitive pick. That 125 base Attack does the heavy lifting.
Overgrow is the go-to ability for Rillaboom. It strengthens grass moves to inflict 1.5× damage at 1/3 max HP or less. Its hidden ability Grassy Surge can work in specific setups.
Rillaboom is a physical attacker with base 125 Attack. Enough bulk to take a hit or two, too. Speed tells the real story. Base 85 Speed is workable. Faster than some, slower than many. Fits the wallbreaker role.
Best way to handle Rillaboom: Status moves (Toxic, Will-O-Wisp) wear it down. Setup sweepers can use it as a boost opportunity. Special attackers bypass its physical bulk.
Game Availability
Available since Sword & Shield, Rillaboom appears in 2 games spanning 3 generations. Beyond its original form, it gained a Gigantamax form in Generation 8.
Click a game to view version-specific details
- Gen 1RB
Red & Blue - Gen 1Y
Yellow - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG
FireRed & LeafGreen - Gen 4DP
Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7SM
Sun & Moon - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwShDebutGigantamax
Sword & Shield - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves