lairon #305
Type Matchups
Weak to (2x damage):
Resistant to (½x damage):
Immune to (0x damage):
lairon
Generation III · #0305 — Iron Armor Pokémon
Lairon, known as the Iron Armor Pokémon, is a dual-type Steel/Rock Pokémon introduced in Generation III that occupies the middle stage of the Aron evolutionary line. With a National Pokédex number of 305, Lairon represents the transitional form between the diminutive Aron and the powerful Aggron, evolving from its pre-evolution at level 32 and itself reaching its final form at level 42. This stocky, armored creature stands 0.9 meters tall and weighs a substantial 120 kilograms, making it a notably dense and formidable presence in its mountain habitats. Lairon's base stats total 430, with exceptional defensive capabilities boasting a base Defense stat of 140, complemented by a respectable Attack stat of 90, though its special stats and Speed remain considerably lower at 50 and 40 respectively.
Base Stats
Height
0.9m
Weight
120.0kg
Category
Iron Armor Pokémon
Gender
Male 50% / Female 50%
Color
gray
Shape
quadruped
Habitat
mountain
Abilities
Prevents being KOed from full HP, leaving 1 HP instead. Protects against the one-hit KO moves regardless of HP.
Protects against recoil damage.
Doubles the Pokémon's weight.
Lairon Biology & Physical Characteristics
Lairon is characterized by its robust, quadrupedal form with a dark gray body protected by segmented iron armor plating. Its back features distinctive ridges and round dark holes on the sides of each armor segment, giving it a formidable appearance that reflects its mineral-based composition. The Pokémon's lower jaw is flanked by several flat protrusions with two visible teeth protruding from its mouth, while its sky-blue eyes provide striking contrast against its metallic exterior. Two-pronged metal bands encircle each of its four short legs, with the upper bands displaying a gray coloration while the lower bands shine silver. Close examination of wild Lairon specimens reveals numerous scratches and dents etched into their armor from constant territorial conflicts, serving as visible records of their combative lifestyle. The Pokémon's body composition is fundamentally mineral-based, derived from its consumption of iron ore and mineral-rich water, allowing it to maintain and repair its metallic plating through dietary intake.
Pokedex Numbers
Training
Breeding
Lairon Breeding, Gender Ratio & Egg Groups
Lairon exhibits a perfectly balanced gender ratio of 50% male to 50% female, ensuring equal distribution across both sexes with no gender-based variants or form differences. As a member of the Monster egg group, Lairon requires specific breeding mechanics when players wish to obtain Aron offspring, as only female Lairon can produce eggs when paired with compatible male Pokémon from the Monster group or with Ditto. The species has a relatively low base happiness value of 35, indicating that wild-caught specimens tend to be less affectionate toward trainers initially, requiring additional effort and care to develop stronger bonds. Lairon eggs require 35 hatch cycles to develop, translating to approximately 8,739 to 8,995 steps of travel before hatching into Aron, making them moderately time-consuming to breed. The slow growth rate that characterizes Lairon applies equally to both male and female specimens, meaning trainers can expect equivalent development timelines regardless of gender. Players breeding Lairon may obtain hidden ability offspring if the mother possesses the Heavy Metal ability, allowing for passing of this trait to subsequent generations.
Held Items
Sprites
Held Items
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
TMs & HMs
tm01
black white
tm01
black 2 white 2
tm01
lets go pikachu lets go eevee
tm01
omega ruby alpha sapphire
tm01
x y
tm02
crystal
tm02
gold silver
tm03
ruby sapphire
tm03
platinum
tm03
firered leafgreen
tm03
heartgold soulsilver
tm03
diamond pearl
tm03
emerald
tm03
xd
tm03
colosseum
tm04
gold silver
tm04
crystal
tm05
ruby sapphire
tm05
emerald
tm05
gold silver
+597 more TMs/HMs
lairon's Evolution Chain
Lairon Evolution, Mega Evolution & Special Forms
Lairon occupies the crucial middle stage of a three-stage evolutionary line that begins with the Basic Stage Aron and culminates in the final form Aggron. The evolution from Aron to Lairon occurs at level 32, representing the Pokémon's transition from a small, timid creature into a more formidable and aggressive form. Lairon's own evolution into Aggron occurs at level 42, marking the final and most powerful transformation of the line. Each evolutionary stage reflects meaningful increases in stats and physical prowess; Lairon demonstrates significantly improved Defense, Attack, and overall bulk compared to Aron, establishing a clear progression pattern that Aggron continues and amplifies. This evolutionary trajectory was established in Generation III and has remained consistent across all subsequent generations and remakes. The evolution line represents a classic slow growth rate classification, requiring substantial leveling investment to achieve the complete transformations, rewarding players who commit to raising these Pokémon from their earliest stages.
Where to Find
hoenn victory road
hoenn
+20 more
glacier room
unova
+1 more
clay tunnel
unova
+1 more
underground ruins
unova
+1 more
rocky mountain room
unova
+1 more
iron room
unova
+1 more
terminus cave
kalos
+7 more
kalos route 18
kalos
+1 more
Lairon Behaviour and Natural Habitat
Lairon are highly territorial creatures with aggressive dispositions, particularly when competing for control of mineral-rich mountain regions. According to Pokédex accounts from multiple generations, when two Lairon encounter each other in the wild, they engage in brutal territorial battles by bashing their steel bodies together with such force that the sound of their collision reverberates for miles across mountain ranges. These confrontations produce impressive sparks that the Pokémon habitually uses to display their strength and dominance to rivals, with larger spark displays indicating greater power. Lairon establishes its nests exclusively on mountains where iron ore deposits are abundant, and the species derives sustenance by digging up and consuming iron ore from rocks and mineral-rich springwater. Notably, Lairon has a particular preference for nutritious mineral springs, often drinking from them until bloated as part of its body-tempering regimen. The species' reliance on specific mineral-rich environments frequently brings them into direct conflict with human miners seeking the same iron ore deposits, creating an ongoing tension between Pokémon and human economic interests.
Pokedex Entries
Generation III
LAIRON tempers its steel body by drinking highly nutritious mineral springwater until it is bloated. This POKéMON makes its nest close to springs of delicious water.
LAIRON feeds on iron contained in rocks and water. It makes its nest on mountains where iron ore is buried. As a result, the POKéMON often clashes with humans mining the iron ore.
When two LAIRON meet in the wild, they fight for territory by bashing into each other with their steel bodies. The sound of their collision carries for miles.
It habitually shows off its strength with the size of sparks it creates by ramming its steel body into boulders.
Generation IV
For food, it digs up iron ore. It smashes its steely body against others to fight over territory.
It loves iron ore. Groups of them fight for territory by bashing one another with their steel bodies.
Generation V
For food, it digs up iron ore. It smashes its steely body against others to fight over territory.
Lairon fight over territory, and when their steel bodies collide, sparks fly.
Generation VI
It loves iron ore. Groups of them fight for territory by bashing one another with their steel bodies.
It habitually shows off its strength with the size of sparks it creates by ramming its steel body into boulders.
Lairon tempers its steel body by drinking highly nutritious mineral springwater until it is bloated. This Pokémon makes its nest close to springs of delicious water.
Lairon feeds on iron contained in rocks and water. It makes its nest on mountains where iron ore is buried. As a result, the Pokémon often clashes with humans mining the iron ore.
Generation VIII
Lairon live in mountains brimming with spring water and iron ore, so these Pokémon often came into conflict with humans in the past.
During territorial disputes, Lairon fight by slamming into each other. Close inspection of their steel armor reveals scratches and dents.
Lairon Name Origin & Design Inspiration
Lairon's name is derived from a combination of linguistic elements reflecting its physical composition and characteristics. In Japanese, it is known as Kodora, a designation that emphasizes its armored nature. The English name 'Lairon' appears to combine 'lair' with 'iron,' directly referencing both the creature's mountainous habitat and its metallic steel body composition. The Pokémon's genus designation as 'Iron Armor Pokémon' explicitly captures the essence of its design philosophy: a living creature whose entire physical structure is built upon and reinforced with iron and steel plating. The segmented armor plating that covers Lairon's back directly recalls medieval plate armor, particularly the design of overlapping scales or segments found in historical chain mail and lamellar armor systems. This deliberate design choice positions Lairon within a cultural lineage of armored creatures and reflects humanity's historical relationship with protective metalwork. The aesthetic reinforces Lairon's role as a defensive powerhouse, with its visual design communicating strength through layered protection and mineral-based resilience rather than speed or agility.
Learnable Moves
Lairon can learn 73 moves:
Move | Type | Cat. | Power | Acc. | PP |
|---|---|---|---|---|---|
| aerial ace | flying | Physical | 60 | — | 20 |
| ancient power | rock | Special | 60 | 100 | 5 |
| attract | normal | Status | — | 100 | 15 |
| autotomize | steel | Status | — | — | 15 |
| body press | fighting | Physical | 80 | 100 | 10 |
| body slam | normal | Physical | 85 | 100 | 15 |
| bulldoze | ground | Physical | 60 | 100 | 20 |
| captivate | normal | Status | — | 100 | 20 |
| confide | normal | Status | — | — | 20 |
| cut | normal | Physical | 50 | 95 | 30 |
| defense curl | normal | Status | — | — | 40 |
| dig | ground | Physical | 80 | 100 | 10 |
| double team | normal | Status | — | — | 15 |
| double edge | normal | Physical | 120 | 100 | 15 |
| earth power | ground | Special | 90 | 100 | 10 |
| earthquake | ground | Physical | 100 | 100 | 10 |
| endeavor | normal | Physical | — | 100 | 5 |
| endure | normal | Status | — | — | 10 |
| facade | normal | Physical | 70 | 100 | 20 |
| frustration | normal | Physical | — | 100 | 20 |
| fury cutter | bug | Physical | 40 | 95 | 20 |
| harden | normal | Status | — | — | 30 |
| headbutt | normal | Physical | 70 | 100 | 15 |
| heavy slam | steel | Physical | — | 100 | 10 |
| hidden power | normal | Special | 60 | 100 | 15 |
| hone claws | dark | Status | — | — | 15 |
| iron defense | steel | Status | — | — | 15 |
| iron head | steel | Physical | 80 | 100 | 15 |
| iron tail | steel | Physical | 100 | 75 | 15 |
| magnet rise | electric | Status | — | — | 10 |
| metal burst | steel | Physical | — | 100 | 10 |
| metal claw | steel | Physical | 50 | 95 | 35 |
| metal sound | steel | Status | — | 85 | 40 |
| mimic | normal | Status | — | — | 10 |
| mud slap | ground | Special | 20 | 100 | 10 |
| natural gift | normal | Physical | — | 100 | 15 |
| protect | normal | Status | — | — | 10 |
| rain dance | water | Status | — | — | 5 |
| rest | psychic | Status | — | — | 5 |
| return | normal | Physical | — | 100 | 20 |
| reversal | fighting | Physical | — | 100 | 15 |
| roar | normal | Status | — | — | 20 |
| rock blast | rock | Physical | 25 | 90 | 10 |
| rock polish | rock | Status | — | — | 20 |
| rock slide | rock | Physical | 75 | 90 | 10 |
| rock smash | fighting | Physical | 40 | 100 | 15 |
| rock tomb | rock | Physical | 60 | 95 | 15 |
| rollout | rock | Physical | 30 | 90 | 20 |
| round | normal | Special | 60 | 100 | 15 |
| sand tomb | ground | Physical | 35 | 85 | 15 |
| sandstorm | rock | Status | — | — | 10 |
| screech | normal | Status | — | 85 | 40 |
| secret power | normal | Physical | 70 | 100 | 20 |
| shadow claw | ghost | Physical | 70 | 100 | 15 |
| shock wave | electric | Special | 60 | — | 20 |
| sleep talk | normal | Status | — | — | 10 |
| snore | normal | Special | 50 | 100 | 15 |
| spite | ghost | Status | — | 100 | 10 |
| stealth rock | rock | Status | — | — | 20 |
| steel beam | steel | Special | 140 | 95 | 5 |
| steel roller | steel | Physical | 130 | 100 | 5 |
| stomping tantrum | ground | Physical | 75 | 100 | 10 |
| stone edge | rock | Physical | 100 | 80 | 5 |
| strength | normal | Physical | 80 | 100 | 15 |
| substitute | normal | Status | — | — | 10 |
| sunny day | fire | Status | — | — | 5 |
| superpower | fighting | Physical | 120 | 100 | 5 |
| swagger | normal | Status | — | 85 | 15 |
| tackle | normal | Physical | 40 | 100 | 35 |
| take down | normal | Physical | 90 | 85 | 20 |
| toxic | poison | Status | — | 90 | 10 |
| uproar | normal | Special | 90 | 100 | 10 |
| water pulse | water | Special | 60 | 100 | 20 |
Lairon Competitive Battle Guide
In competitive Pokémon battling, Lairon serves primarily as a defensive pivot and bulky physical attacker with access to valuable defensive typing and respectable physical bulk. Its exceptional base Defense stat of 140 is paired with 140 points in Attack, creating a viable mixed attacker capable of absorbing physical hits while dealing significant damage in return, though its special stats of 50 in both Special Attack and Special Defense present notable vulnerabilities to special attackers. Lairon's ability options provide distinct competitive advantages: Sturdy offers protection against OHKO moves and guarantees survival of attacks that would otherwise result in knockout from full health, leaving the Pokémon with exactly one HP remaining; Rock Head eliminates recoil damage from high-power but recoil-inducing moves; and the hidden ability Heavy Metal doubles the Pokémon's weight, potentially enabling interesting strategic interactions with weight-dependent mechanics. The Steel/Rock typing grants Lairon excellent resistances to numerous common attacking types including Normal, Flying, Psychic, Bug, and Fairy, while offering immunity to Poison, though it creates significant weaknesses to Water, Ground, and Fighting-type moves. Competitive players typically employ Lairon as a defensive wall that can pivot into predicted physical attackers, though its base Speed of 40 means it almost always moves last in comparison to common competitive threats, limiting its role in offensive momentum generation.
Commonly Asked Questions About Lairon
What type is Lairon?
Lairon is a steel and rock type Pokemon.
What does Lairon evolve into?
Lairon evolves into aggron.
What are Lairon's weaknesses?
Lairon is weak to fighting, ground and water type moves.
Where can I find Lairon?
Lairon can be found in hoenn victory road (hoenn), glacier room (unova) and clay tunnel (unova) and 5 other locations.
Lairon Cultural Impact & Franchise History
Lairon has maintained a consistent presence throughout the Pokémon franchise since its introduction in Generation III, appearing prominently in multiple anime episodes and serving as a character-defining Pokémon for several notable trainers. The species exemplifies the game series' tradition of creating intermediate evolutionary forms that capture player imagination through their transitional nature, bridging the gap between the cute factor of Aron and the imposing strength of Aggron. In the Pokémon Trading Card Game, Lairon has received numerous card iterations across different sets and eras, with various depictions highlighting its armored physiology and metallic nature through artistic interpretation. The Pokémon has maintained steady availability across nearly all main series games since its debut, including remakes and reimaginings, establishing it as a reliable choice for players seeking defensive Steel-type coverage. Its design has influenced subsequent generations of Pokémon, particularly in establishing the archetype of armored, mineral-feeding Pokémon with territorial aggression as defining behavioral traits. Lairon's distinctive visual design with its segmented armor plating has made it instantly recognizable to franchise fans, and its role as a mountain-dwelling, territory-defending Pokémon resonates with players seeking creatures with strong thematic environmental connections.
Where to Find Lairon in Every Pokémon Game
Lairon has maintained consistent availability across the vast majority of main series Pokémon games since its introduction in Generation III's Pokémon Ruby and Sapphire versions. In these original titles, players could encounter and capture Lairon on various mountain routes and caves throughout Hoenn, with the species appearing frequently enough to present players with opportunities to obtain specimens through normal gameplay progression. The Pokémon appeared in subsequent generations including Ruby/Sapphire remakes Omega Ruby and Alpha Sapphire, as well as the fourth and fifth generation titles Diamond, Pearl, Platinum, and Black 2/White 2. Modern entries including X and Y, Sun and Moon, Sword and Shield, and their respective DLC expansions have all included Lairon in their regional Pokédexes and wild encounter tables. The species typically appears in mountain environments, caves with mineral deposits, and other stone-rich terrain consistent with its ecological niche and dietary requirements. Lairon has a catch rate of 90, indicating relatively easy capture once encountered in the wild, making it an accessible choice for players seeking to add the species to their rosters. Additionally, Lairon can be obtained through breeding Aron, providing alternative acquisition methods for players who prefer raising the species from its earliest evolutionary stage rather than capturing intermediate forms in the wild.