rillaboom-gmax #10209
Type Matchups
Weak to (2x damage):
Resistant to (½x damage):
rillaboom-gmax
Generation VIII · #10209 — Drummer Pokémon
Gigantamax Rillaboom is the towering Gigantamax form of the Grass-type Drummer Pokémon, a transformation that showcases the raw power of Galar's Gigantamax phenomenon. This colossal form emerges when a Rillaboom with the Gigantamax Factor channels its energy, growing to an astounding 28 meters in height and weighing approximately 1,000 kilograms. Unlike its standard form, Gigantamax Rillaboom retains the same base stats of 530 total, with its formidable Attack stat of 125 remaining its most dominant attribute. The transformation grants Rillaboom access to the exclusive G-Max move G-Max Drum Solo, a powerful Grass-type attack that deals damage and can strike through protective barriers. When Gigantamax Rillaboom enters battle, its hidden ability Grassy Surge automatically transforms the terrain into Grassy Terrain, providing significant strategic advantages by weakening Dragon-type moves and boosting the power of Grass-type attacks for all Pokémon on the field.
Base Stats
Height
28.0m
Weight
1000.0kg
Category
Drummer Pokémon
Gender
Male 87.5% / Female 12.5%
Color
green
Shape
humanoid
Abilities
Strengthens grass moves to inflict 1.5× damage at 1/3 max HP or less.
When this Pokémon enters battle, it changes the terrain to Grassy Terrain.
Rillaboom-gmax Biology & Physical Characteristics
Gigantamax Rillaboom undergoes a dramatic transformation that emphasizes its primal connection to nature and rhythm. The Pokémon's signature tree stump evolves into a massive drum set that resembles an entire forest, with multiple drum components creating an otherworldly percussion ensemble. The gorilla-like physiology becomes even more imposing, with its brown fur and tan markings scaling proportionally to match its new size. The characteristic green, leaf-like hair on its head becomes more luxuriant and forest-like, further cementing its identity as a Pokémon of natural power. Its thick arms and powerful frame, already impressive at a base weight of 90 kilograms, become genuinely earth-shaking at 1,000 kilograms. The transformation doesn't alter its type—it remains pure Grass-type—but the visual presentation suggests a Pokémon that has merged with its surrounding environment, becoming one unified instrument of nature's percussion.
Pokedex Numbers
Training
Breeding
Rillaboom-gmax Breeding, Gender Ratio & Egg Groups
Rillaboom maintains a gender ratio of approximately 87.5% male and 12.5% female, making males significantly more common in the species. This distribution is consistent across both the base form and Gigantamax form, as the transformation doesn't alter underlying biological characteristics. Both male and female Rillaboom belong to the Field and Grass egg groups, allowing them to breed with a wide variety of Pokémon and produce offspring ranging from Grookey to other Field or Grass-type Pokémon depending on the breeding partner. The species has a relatively high hatch counter of 20 cycles, requiring approximately 4,884 to 5,140 steps to hatch eggs in the overworld, indicating a moderate breeding investment for players seeking perfect individual values or desired natures. Female Rillaboom are considerably rarer than males, which may influence breeding strategies for trainers seeking to establish breeding lines with specific characteristics or moves. The base friendship level of 50 suggests that Rillaboom are neither particularly warm nor cold toward their trainers initially, requiring effort to bond with through battling, items, and care to fully appreciate their potential in competitive scenarios.
Sprites
rillaboom-gmax's Evolution Chain
Rillaboom-gmax Evolution, Mega Evolution & Special Forms
Gigantamax Rillaboom represents the ultimate expression of a Grookey's evolutionary journey, achieved only when a fully evolved Rillaboom possesses the Gigantamax Factor and enters battle in a location where Gigantamax phenomena can occur. The evolution chain begins with the small, timid Grookey at the base, which evolves into the more aggressive Thwackey at level 16, and finally reaches its powerful final form Rillaboom at level 35. However, Gigantamax is distinct from traditional evolution—it's a temporary transformation that lasts for three turns in battle rather than a permanent change. Introduced in The Isle of Armor DLC expansion, Gigantamax Rillaboom can only be obtained through specific encounters or breeding Rillaboom that already possess the Gigantamax Factor. The transformation is not available to all Rillaboom; only those specifically bred or caught with the factor can access this form, making it a rare and valuable asset in competitive battling and for collectors seeking to complete their Pokédex.
Where to Find
Location data not available for this Pokémon in the database.
Rillaboom-gmax Behaviour and Natural Habitat
In its Gigantamax form, Rillaboom's behavior becomes even more rhythmic and synchronized with natural forces. According to Pokédex entries from Pokémon Sword and Shield, Gigantamax Rillaboom has become one with its forest of drums and continues to lay down beats that shake all of Galar, suggesting that its drumming ability reaches catastrophic scales in this form. The transformation emphasizes the Pokémon's role as a leader and harmony-bringer, as noted in the base form's Shield entry where it states that the one with the best drumming techniques becomes the boss of the troop, possessing a gentle disposition and valuing harmony among its group. In battle, Gigantamax Rillaboom acts as both an offensive powerhouse and a terrain controller, using Grassy Terrain to reshape the battlefield to its advantage. The enormous scale of the transformation suggests these Pokémon would inhabit dense forests and grasslands where their drumming would resonate across vast distances, coordinating their troops through rhythmic communication that shakes the very earth.
Pokedex Entries
Generation VIII
By drumming, it taps into the power of its special tree stump. The roots of the stump follow its direction in battle.
The one with the best drumming techniques becomes the boss of the troop. It has a gentle disposition and values harmony among its group.
Rillaboom-gmax Name Origin & Design Inspiration
The name Rillaboom derives from a combination of 'rilla' (gorilla) and 'boom,' reflecting both the Pokémon's primate appearance and its percussion-based identity. The Japanese name Gorirander (ゴリランダー) similarly blends 'gorilla' with 'commander' or 'ranger,' emphasizing its leadership role within its troop. In Gigantamax form, this identity is magnified exponentially—the 'boom' element becomes literal, as the Pokémon's drumming literally shakes the ground of Galar. The design philosophy of Gigantamax Rillaboom centers on transformation and scale, taking the already impressive stump-drum concept and expanding it into an entire forest-like percussion set. The visual design references both traditional gorillas and the imagery of massive drum kits or orchestral percussion sections, creating a unique fusion of natural animal and musical instrument. The species classification as the Drummer Pokémon takes on mythological proportions in Gigantamax form, evoking imagery of primal drummers in ancient forests or shamanic figures conducting the very forces of nature through rhythm and percussion.
Rillaboom-gmax Competitive Battle Guide
Gigantamax Rillaboom stands as a formidable force in competitive Pokémon battles, leveraging its exceptional Attack stat of 125 alongside access to powerful moves and terrain control. The exclusive move G-Max Drum Solo serves as its primary Gigantamax attack, dealing significant damage while potentially bypassing protective moves like Protect and Reflect Guard. Its ability Grassy Surge automatically sets Grassy Terrain upon entry, providing crucial benefits including reduced damage from Dragon-type moves and increased power for Grass-type attacks, making it an excellent choice for balanced team compositions. The base form's movepool includes devastating options such as Wood Hammer, which combines 120 power with perfect accuracy, and utility moves like Knock Off and Taunt that control opponent strategies. With 125 Attack and respectable bulk through 100 HP and 90 Defense, Gigantamax Rillaboom functions as both a sweeper and a bulky attacker depending on EV distribution. However, competitive players must consider its relatively low Special Attack of 60 and modest Speed of 85, meaning it typically cannot outspeed many competitive threats without external support, and relies heavily on physical moves rather than special attacks, potentially limiting coverage options in certain matchups.
Commonly Asked Questions About Rillaboom-gmax
What type is Rillaboom-gmax?
Rillaboom-gmax is a grass type Pokemon.
What does Rillaboom-gmax evolve into?
Rillaboom-gmax does not evolve into any other Pokemon. It is the final form in its evolution line.
What are Rillaboom-gmax's weaknesses?
Rillaboom-gmax is weak to flying, poison, bug, fire and ice type moves.
Rillaboom-gmax Cultural Impact & Franchise History
Rillaboom has emerged as a beloved and iconic Pokémon of Generation VIII, representing the grassland guardian of Galar and embodying the region's emphasis on dynamism and transformation through Gigantamax phenomena. As the Grass-type starter final evolution for Pokémon Sword and Shield, it has secured a prominent place in the hearts of players who chose Grookey as their companion, with many trainers specifically training their Rillaboom to achieve Gigantamax form. The Pokémon has appeared in various media, including the animated series where it has had notable appearances demonstrating its rhythmic abilities and leadership qualities. In competitive circles, Gigantamax Rillaboom has earned respect as a formidable choice in both casual and serious battle formats, appearing in tournament results and tier lists alongside other Gigantamax powerhouses. The fusion of gorilla strength with musical percussion resonates across different cultures, as drumming is a universal language, making Rillaboom's identity as a Drummer Pokémon uniquely accessible and appealing. Merchandise, artwork, and fan communities celebrate Rillaboom's distinctive design, with its Gigantamax form serving as visual spectacle that showcases the awe-inspiring transformations that define the modern Pokémon competitive experience.
Where to Find Rillaboom-gmax in Every Pokémon Game
Gigantamax Rillaboom is primarily available in Pokémon Sword and Shield, where it can be obtained by catching a standard Rillaboom and either finding one with the Gigantamax Factor or using the Gigantamax Factor item to enable the transformation. Within Pokémon Sword and Shield, Rillaboom appears in the Pokédex as entry #0003 (regional) and #0812 (national), making it one of the first obtainable Pokémon in the regional Pokédex. It also appears in subsequent games including Pokémon Legends: Z-A and Pokémon Scarlet and Violet, though Gigantamax specifically is limited to Pokémon Sword and Shield's game mechanics. The Gigantamax form was introduced in the Isle of Armor DLC expansion, expanding the availability and strategic options for competitive players. For the base Rillaboom, availability has expanded across multiple generations and games, but trainers seeking the Gigantamax-capable variant must specifically obtain their Rillaboom from Sword and Shield with the Gigantamax Factor intact. The capture rate of 45 means that standard Poké Balls have approximately a 5.9% catch rate against full-health Rillaboom, requiring either weakening the Pokémon significantly, using status conditions, or utilizing specialized Poké Balls like Dusk Balls or Net Balls for improved capture probability in natural encounters.