Rillaboom Pokemon Guide

Pokemon Guide

Rillaboom Pokemon Guide

Rillaboom is the final evolution of Grookey and Thwackey, known for its powerful Grass-type attacks, drum-based design, Grassy Surge ability and Gigantamax form. This guide covers Rillaboom’s stats, best moves, abilities, evolution, shiny form, typing, weaknesses, locations and Gigantamax information.

Normal Form

Rillaboom

Shiny Form

Shiny Rillaboom

Gigantamax Form

Gigantamax Rillaboom

Last Updated: May 2026 | Page Status: This Rillaboom guide supports current Pokemon games, Pokemon Champions and future updates. Location, moves and availability details will be updated as new Pokemon game data becomes available.

Rillaboom Guide Contents

Description	Quick Facts
Stats	Best Moves
All Moves	Weaknesses
Evolution	Locations
Abilities	FAQ

Rillaboom Description

Rillaboom is the final evolution of Grookey and Thwackey. It is a Grass-type Pokemon introduced in Generation 8 and is known for using its drum to control roots, rhythm and powerful Grass-type attacks.

Competitive Overview

Is Rillaboom Good in Competitive?

Rillaboom is generally a strong competitive Pokemon because of its high Attack, useful bulk, Grassy Surge ability and access to Grassy Glide in many formats. It can function as a physical attacker, terrain support Pokemon or priority cleaner depending on the ruleset.

Rillaboom’s biggest strengths are its Grass-type pressure, terrain control, Knock Off utility and pivoting options. Its biggest issue is that its Grass typing leaves it weak to Fire, Ice, Poison, Flying and Bug-type moves, which can limit its matchups against common offensive threats.

Rillaboom Quick Facts

Here are the key facts to know about Rillaboom, including its type, abilities, height, weight and species information.

Name

Rillaboom

National Dex

#0812

Type

Grass

Species

Drummer Pokemon

Height

6’11” / 2.1 m

210 cm

Weight

198.4 lbs / 90.0 kg

90.0 kg

Abilities

Overgrow, Grassy Surge

Rillaboom Stats

Rillaboom has strong Attack and solid bulk for a Grass-type starter Pokemon. Its stat spread supports physical attacking sets, terrain support and utility-focused play.

100

Attack

125

Defense

Special Attack

Special Defense

Speed

Rillaboom Best Moves Across Pokemon Games

Rillaboom has a strong movepool with Grass, Dark, Bug, Fighting, Ground and setup options. These are some of Rillaboom’s most useful and recognizable moves across Pokemon games.

Grass type Pokemon icon

Drum Beating

Rillaboom’s signature Grass-type move, dealing damage while lowering the target’s Speed.

Grass type Pokemon icon

Wood Hammer

A very strong Grass-type attack that gives Rillaboom major physical damage potential.

Grass type Pokemon icon

Grassy Glide

A powerful Grass-type priority option when Grassy Terrain is active.

Dark type Pokemon icon

Knock Off

Useful item removal that helps Rillaboom disrupt defensive and offensive Pokemon.

Bug type Pokemon icon

U-turn

A pivot move that lets Rillaboom keep momentum while switching to a teammate.

Fighting type Pokemon icon

Drain Punch

Coverage that helps Rillaboom hit Steel, Ice, Rock, Normal and Dark-type Pokemon while recovering HP.

Ground type Pokemon icon

High Horsepower

Strong Ground-type coverage against Fire, Steel, Poison, Electric and Rock-type Pokemon.

Normal type Pokemon icon

Swords Dance

A setup move that raises Attack and can turn Rillaboom into a dangerous sweeper.

Rillaboom All Moves

Rillaboom can learn Grass, Normal, Dark, Bug, Fighting, Ground and utility moves across different Pokemon games. Use the section below to view Rillaboom’s move list by learn method.

Move data shown from: Pokemon Scarlet and Violet

Level-Up Moves

Level	Move	Type	Category	Power	Accuracy
Start	Drum Beating	Grass	Physical	80	100
1	Branch Poke	Grass	Physical	40	100
1	Double Hit	Normal	Physical	35	90
1	Grassy Terrain	Grass	Status	–	–
1	Growl	Normal	Status	–	100
1	Noble Roar	Normal	Status	–	100
1	Scratch	Normal	Physical	40	100
1	Taunt	Dark	Status	–	100
12	Razor Leaf	Grass	Physical	55	95
19	Screech	Normal	Status	–	85
24	Knock Off	Dark	Physical	65	100
30	Slam	Normal	Physical	80	75
38	Uproar	Normal	Special	90	100
46	Wood Hammer	Grass	Physical	120	100
54	Endeavor	Normal	Physical	–	100
62	Boomburst	Normal	Special	140	100

TM Moves

Method	Move	Type	Category	Power	Accuracy
TM	Acrobatics	Flying	Physical	55	100
TM	Body Press	Fighting	Physical	80	100
TM	Body Slam	Normal	Physical	85	100
TM	Brick Break	Fighting	Physical	75	100
TM	Bulk Up	Fighting	Status	–	–
TM	Bulldoze	Ground	Physical	60	100
TM	Bullet Seed	Grass	Physical	25	100
TM	Double Edge	Normal	Physical	120	100
TM	Drain Punch	Fighting	Physical	75	100
TM	Earth Power	Ground	Special	90	100
TM	Earthquake	Ground	Physical	100	100
TM	Endeavor	Normal	Physical	–	100
TM	Endure	Normal	Status	–	–
TM	Energy Ball	Grass	Special	90	100
TM	Facade	Normal	Physical	70	100
TM	False Swipe	Normal	Physical	40	100
TM	Fling	Dark	Physical	–	100
TM	Focus Blast	Fighting	Special	120	70
TM	Focus Punch	Fighting	Physical	150	100
TM	Frenzy Plant	Grass	Special	150	90
TM	Giga Drain	Grass	Special	75	100
TM	Giga Impact	Normal	Physical	150	90
TM	Grass Knot	Grass	Special	–	100
TM	Grass Pledge	Grass	Special	80	100
TM	Grassy Glide	Grass	Physical	55	100
TM	Grassy Terrain	Grass	Status	–	–
TM	High Horsepower	Ground	Physical	95	95
TM	Hyper Beam	Normal	Special	150	90
TM	Hyper Voice	Normal	Special	90	100
TM	Knock Off	Dark	Physical	65	100
TM	Leaf Storm	Grass	Special	130	90
TM	Low Kick	Fighting	Physical	–	100
TM	Low Sweep	Fighting	Physical	65	100
TM	Magical Leaf	Grass	Special	60	–
TM	Mud Shot	Ground	Special	55	95
TM	Protect	Normal	Status	–	–
TM	Rest	Psychic	Status	–	–
TM	Scary Face	Normal	Status	–	100
TM	Seed Bomb	Grass	Physical	80	100
TM	Sleep Talk	Normal	Status	–	–
TM	Snarl	Dark	Special	55	95
TM	Solar Beam	Grass	Special	120	100
TM	Solar Blade	Grass	Physical	125	100
TM	Stomping Tantrum	Ground	Physical	75	100
TM	Substitute	Normal	Status	–	–
TM	Sunny Day	Fire	Status	–	–
TM	Swift	Normal	Special	60	–
TM	Swords Dance	Normal	Status	–	–
TM	Take Down	Normal	Physical	90	85
TM	Taunt	Dark	Status	–	100
TM	Tera Blast	Normal	Special	80	100
TM	Thief	Dark	Physical	60	100
TM	Trailblaze	Grass	Physical	50	100
TM	U Turn	Bug	Physical	70	100
TM	Uproar	Normal	Special	90	100

Egg Moves

Move	Type	Category	Power	Accuracy
Fake Out	Normal	Physical	40	100
Growth	Normal	Status	–	–
Hammer Arm	Fighting	Physical	100	90
Leech Seed	Grass	Status	–	90
Strength	Normal	Physical	80	100
Worry Seed	Grass	Status	–	100

Rillaboom Typing, Weaknesses and Resistances

Rillaboom is a Grass-type Pokemon. This gives it useful resistances to Water, Electric, Grass and Ground-type moves, but it also creates weaknesses to Fire, Ice, Poison, Flying and Bug-type moves.

Type

Grass

Weaknesses

Fire, Ice, Poison, Flying and Bug

Resistances

Water, Electric, Grass and Ground

Immunity

None

Rillaboom Abilities

Rillaboom’s abilities support either standard Grass-type starter play or terrain-focused strategies depending on the game and format.

Overgrow

Powers up Grass-type moves when Rillaboom is at low HP. This can help Rillaboom deal more damage in close battles.

Grassy Surge

Creates Grassy Terrain when Rillaboom enters battle. This boosts grounded Grass-type attacks, restores some HP each turn and weakens some Ground-type moves.

Rillaboom Evolution

Rillaboom evolves from Thwackey starting at Level 35. Thwackey evolves from Grookey starting at Level 16, making the full evolution line Grookey, Thwackey and Rillaboom.

Stage 1

Grookey

Grass type Pokemon icon

Starting form

Stage 2

Thwackey

Grass type Pokemon icon

Evolves from Grookey at Level 16

Stage 3

Rillaboom

Grass type Pokemon icon

Evolves from Thwackey at Level 35

Where to Find Rillaboom in Pokemon Games

Rillaboom’s availability changes depending on the Pokemon game. In most games, Rillaboom is obtained by evolving Thwackey starting at Level 35 after evolving Grookey into Thwackey at Level 16.

Generation 1: Pokemon Red, Blue and Yellow

Game	Where to Find Rillaboom
Pokemon Red	Not available because Rillaboom had not been introduced yet.
Pokemon Blue	Not available because Rillaboom had not been introduced yet.
Pokemon Yellow	Not available because Rillaboom had not been introduced yet.

Generation 2: Pokemon Gold, Silver and Crystal

Game	Where to Find Rillaboom
Pokemon Gold	Not available because Rillaboom had not been introduced yet.
Pokemon Silver	Not available because Rillaboom had not been introduced yet.
Pokemon Crystal	Not available because Rillaboom had not been introduced yet.

Generation 3: Ruby, Sapphire, Emerald, FireRed and LeafGreen

Game	Where to Find Rillaboom
Pokemon Ruby	Not available because Rillaboom had not been introduced yet.
Pokemon Sapphire	Not available because Rillaboom had not been introduced yet.
Pokemon Emerald	Not available because Rillaboom had not been introduced yet.
Pokemon FireRed	Not available because Rillaboom had not been introduced yet.
Pokemon LeafGreen	Not available because Rillaboom had not been introduced yet.

Generation 4: Diamond, Pearl, Platinum, HeartGold and SoulSilver

Game	Where to Find Rillaboom
Pokemon Diamond	Not available because Rillaboom had not been introduced yet.
Pokemon Pearl	Not available because Rillaboom had not been introduced yet.
Pokemon Platinum	Not available because Rillaboom had not been introduced yet.
Pokemon HeartGold	Not available because Rillaboom had not been introduced yet.
Pokemon SoulSilver	Not available because Rillaboom had not been introduced yet.

Generation 5: Black, White, Black 2 and White 2

Game	Where to Find Rillaboom
Pokemon Black	Not available because Rillaboom had not been introduced yet.
Pokemon White	Not available because Rillaboom had not been introduced yet.
Pokemon Black 2	Not available because Rillaboom had not been introduced yet.
Pokemon White 2	Not available because Rillaboom had not been introduced yet.

Generation 6: X, Y, Omega Ruby and Alpha Sapphire

Game	Where to Find Rillaboom
Pokemon X	Not available because Rillaboom had not been introduced yet.
Pokemon Y	Not available because Rillaboom had not been introduced yet.
Pokemon Omega Ruby	Not available because Rillaboom had not been introduced yet.
Pokemon Alpha Sapphire	Not available because Rillaboom had not been introduced yet.

Generation 7: Sun, Moon, Ultra Sun, Ultra Moon and Let’s Go

Game	Where to Find Rillaboom
Pokemon Sun	Not available because Rillaboom had not been introduced yet.
Pokemon Moon	Not available because Rillaboom had not been introduced yet.
Pokemon Ultra Sun	Not available because Rillaboom had not been introduced yet.
Pokemon Ultra Moon	Not available because Rillaboom had not been introduced yet.
Pokemon Let’s Go Pikachu	Not available because Rillaboom had not been introduced yet.
Pokemon Let’s Go Eevee	Not available because Rillaboom had not been introduced yet.

Generation 8: Sword, Shield, Brilliant Diamond, Shining Pearl and Legends: Arceus

Game	Where to Find Rillaboom
Pokemon Sword	Evolve from Thwackey at Level 35.
Pokemon Shield	Evolve from Thwackey at Level 35.
Pokemon Brilliant Diamond	Not available in this game.
Pokemon Shining Pearl	Not available in this game.
Pokemon Legends: Arceus	Not available in this game.

Generation 9: Scarlet, Violet and Legends Z-A

Game	Where to Find Rillaboom
Pokemon Scarlet	Evolve from Thwackey at Level 35. Grookey can be found in the Coastal Biome in The Indigo Disk after upgrading Coastal Biome biodiversity.
Pokemon Violet	Evolve from Thwackey at Level 35. Grookey can be found in the Coastal Biome in The Indigo Disk after upgrading Coastal Biome biodiversity.
Pokemon Legends Z-A	Not available in this game.

Generation 10: Pokemon Winds and Waves

Game	Where to Find Rillaboom
Pokemon Winds and Waves	Coming soon once official location, encounter or transfer information is confirmed.

Gigantamax Rillaboom

Gigantamax Rillaboom is Rillaboom’s Gigantamax form. It keeps Rillaboom’s Grass typing while gaining a massive drum set and access to the powerful G-Max Drum Solo move in games that support Gigantamax.

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Rillaboom FAQ

Here are quick answers to common questions about Rillaboom. This FAQ is visible on-page content only and does not use FAQ schema markup.

What type is Rillaboom?

Rillaboom is a Grass-type Pokemon.

What is Rillaboom weak against?

Rillaboom is weak to Fire, Ice, Poison, Flying and Bug-type moves.

What does Rillaboom evolve from?

Rillaboom evolves from Thwackey starting at Level 35. Thwackey evolves from Grookey starting at Level 16.

What are Rillaboom’s abilities?

Rillaboom’s abilities are Overgrow and Grassy Surge. Grassy Surge is its Hidden Ability.

What are Rillaboom’s best moves?

Rillaboom’s best moves often include Drum Beating, Wood Hammer, Grassy Glide, Knock Off, U-turn, Drain Punch, High Horsepower and Swords Dance.

Is Rillaboom good in Pokemon?

Yes, Rillaboom is often a strong Pokemon because of its high Attack, Grassy Surge ability, strong Grass-type moves and useful utility options.

How do you get Rillaboom?

The most common way to get Rillaboom is to evolve Thwackey at Level 35 after evolving Grookey into Thwackey at Level 16.

Does Rillaboom have a Gigantamax form?

Yes, Rillaboom has a Gigantamax form in Pokemon Sword and Shield. It is included on this page because it is an important official form.

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Rillaboom Pokemon Guide