Physical
Trick Room
430Average
40Very Slow
DTier

While most trainers evolve Lairon into Aggron immediately, the unevolved form has a niche with Eviolite boosting its defenses. Poison moves can't touch it, and only 3 types hit it super-effectively. The stat spread favors raw physical power.

The stat bars tell the story: Defense carries everything and Speed's dead weight. But this Iron Armor Pokemon still yields 2 Defense EVs per fight on a slow 1.25M XP grind.

Base Stats
430Above
HP60
C
Attack90
B
Defense140
A
Sp. Atk50
D
Sp. Def50
D
Speed40
D
Total430
Low <60
Avg 60-89
High 90-149
Top 150+
EV YieldDefeating Lairon yields +2 Def
HPAtkDef+2SpASpDSpe
Details
Catch90Challenging•Slow1.25M XP•0.9m / 2'11"•120kg / 264.6 lbs•151Base XP
Pokedex Entries

It loves iron ore. Groups of them fight for territory by bashing one another with their steel bodies.

X

It habitually shows off its strength with the size of sparks it creates by ramming its steel body into boulders.

Y

Lairon Weakness

Good

Fighting, Ground, and Water-type moves hit Lairon for super-effective damage. Fighting and Ground hits land at 4x, so they're the biggest threat. The upside? Poison-type moves can't touch it at all. It resists 8 types, so it can switch into a lot of moves safely. Lairon's physical bulk (base 140 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.

4xCriticali
FightingGround
2xWeaki
Water
½xResisti
IcePsychicBugRockDragonFairy
¼xResisti
NormalFlying
0xImmunei
Poison
STAB (6)i
IceRockFairyFireFlyingBug
3Weak
8Resist
1Immune
Scorei+3
SpikesGrounded — up to 25%
4x Fighting — Close Combat, Drain Punch, Focus Blast
4x Ground — Earthquake, Earth Power, Scorching Sands
Abilities
SturdyPrevents being KOed from full HP, leaving 1 HP instead. Protects against the one-hit KO moves regardless of HP.
Rock HeadProtects against recoil damage.
Heavy MetalHADoubles the Pokémon's weight.

Lairon sits between Aron and Aggron in this three-stage line. Not the final form yet. For breeding, slow to hatch with no compatible partners via one egg group. So far, Defense got the biggest boost (+40 from Aron). The final form adds another 100 stats on top.

How to Evolve

3 Forms
Aron
#304Aron
32
Level 32
Lairon
#305Lairon
42
Level 42
Aggron
#306Aggron
Stat Comparison 3 Stages
Aron
SteelRock
Lairon
SteelRock
Aggron
SteelRock
HP
50
60+10
70+10
ATK
70
90+20
110+20
DEF
100
140+40
180+40
SP.ATK
40
50+10
60+10
SP.DEF
40
50+10
60+10
SPE
30
40+10
50+10
BST
330D-Tier
430D-Tier+100
530C-Tier+100
ROLE
Balanced
Trick Room
Balanced
TYPE
Physical
Physical
Physical
Breeding
Moderate

Breed with Lairon to get Aron eggs from the Monster egg group. Notable egg moves include Body Slam, Curse, Dragon Rush and 9 more.

Egg Groups
Monster
Gender
♂50.0%♀50.0%
Hatch Time
35 cycles·8,995 steps
Slow~9 min with Flame Body
Egg Moves
12moves

Best Build

No build content available for this Pokemon in Gen 6.

Try selecting a different game/generation filter, or check back later.

Don't skip the egg moves. Lairon picks up Body Slam and Curse only through breeding, and both fill gaps the natural movepool can't. STAB runs through Head Smash and Iron Tail while coverage across 7 types adds range.

Level-Up Moves

Lv 1
Harden
——30Normal
Lv 1
Headbutt
7010015Normal
Lv 1
Mud-Slap
2010010Ground
Lv 1
Tackle
5010035Normal
Lv 4
Mud-Slap
2010010Ground
Lv 8
Headbutt
7010015Normal
Lv 11
Metal Claw
509535Steel
Lv 15
Iron Defense
——15Steel
Lv 18
Roar-6
——20Normal
Lv 22
Take Down
908520Normal
Lv 25
Iron Head
8010015Steel
Lv 29
Protect+4
——10Normal
Lv 34
Metal Sound
—8540Steel
Lv 40
Iron Tail
1007515Steel
Lv 45
Autotomize
——15Steel
Lv 51
Heavy Slam
—10010Steel
Lv 56
Double-Edge
12010015Normal
Lv 62
Metal Burst
—10010Steel

TM Moves

Src
TM40
Aerial Ace
60—20Flying
TM45
Attract
—10015Normal
TM78
Bulldoze
6010020Ground
TM100
Confide
——20Normal
HM01
Cut
509530Normal
TM28
Dig
8010010Ground
TM32
Double Team
——15Normal
TM26
Earthquake
10010010Ground
TM42
Facade
7010020Normal
TM21
Frustration
—10020Normal
TM10
Hidden Power
6010015Normal
TM01
Hone Claws
——15Dark
TM17
Protect+4
——10Normal
TM18
Rain Dance
——5Water
TM44
Rest
——10Psychic
TM27
Return
—10020Normal
TM05
Roar-6
——20Normal
TM69
Rock Polish
——20Rock
TM80
Rock Slide
759010Rock
TM94
Rock Smash
4010015Fighting
TM39
Rock Tomb
609515Rock
TM48
Round
6010015Normal
TM37
Sandstorm
——10Rock
TM65
Shadow Claw
7010015Ghost
TM88
Sleep Talk
——10Normal
TM71
Stone Edge
100805Rock
HM04
Strength
8010015Normal
TM90
Substitute
——10Normal
TM11
Sunny Day
——5Fire
TM87
Swagger
—9015Normal
TM06
Toxic
—9010Poison

Egg Moves

Src
Egg
Body Slam
8510015Normal
Egg
Curse
——10Ghost
Egg
Dragon Rush
1007510Dragon
Egg
Endeavor
—1005Normal
Egg
Head Smash
150805Rock
Egg
Iron Head
8010015Steel
Egg
Reversal
—10015Fighting
Egg
Screech
—8540Normal
Egg
Smelling Salts
7010010Normal
Egg
Stealth Rock
——20Rock
Egg
Stomp
6510020Normal
Egg
Superpower
1201005Fighting

Tutor Moves

Lairon can't learn any Tutor moves

Transfer Moves

Src
Gen 4
Ancient Power
601005Rock
Gen 4
Captivate
—10020Normal
Gen 3
Defense Curl
——40Normal
Gen 4
Endure+4
——10Normal
Gen 4
Fury Cutter
409520Bug
Gen 3
Mimic
——10Normal
Gen 4
Natural Gift
—10015Normal
Gen 4
Rollout
309020Rock

Lairon starts showing up in late-game routes at high spawn rates across 7 encounter spots. The list below is sorted so you can pick what fits your current progress without scrolling through everything.

Where To Catch Lairon in X & Y

Aron is your first catch on the way to Lairon. You'll find walking encounters from Lv. 23-46 across 12 total spots in the chain.

  1. Aron
    Step 1Catch Aron
    Terminus Cave - 1F
    GrassLv.23RareMidCaveHorde battle
    CHALLENGING
    Terminus Cave - 2F Left
    GrassLv.23RareMidCaveHorde battle
    CHALLENGING
    Terminus Cave - 2F Right
    GrassLv.23RareMidCaveHorde battle
    CHALLENGING
    Terminus Cave - B1F
    GrassLv.23RareMidCaveHorde battle
    CHALLENGING
    Terminus Cave - B2F
    GrassLv.23RareMidCaveHorde battle
    CHALLENGING
  2. Lairon
    Step 2Lairon ✓
    Route 18
    GrassLv.44-46CommonLateRouteRed Flower
    EFFORTLESS
    Terminus Cave - 1F
    GrassLv.45-46CommonLateCave
    EFFORTLESS
    Terminus Cave - 2F Left
    GrassLv.45-46CommonLateCave
    EFFORTLESS
    Terminus Cave - 2F Right
    GrassLv.45-46CommonLateCave
    EFFORTLESS
    Terminus Cave - B1F
    GrassLv.45-46CommonLateCave
    EFFORTLESS
    Terminus Cave - B2F
    GrassLv.45-46CommonLateCave
    EFFORTLESS
    Route 18
    GrassLv.46RarePostRoute
    CHALLENGING
    or evolve from Aron (Step 1)

  • At 430 BST, Lairon is firmly in pre-evolution territory. Evolve it into Aggron before bringing it to any serious fight.

  • Watch for Blaziken (Fighting), Swampert (Ground), and Starmie (Water) when using Lairon. They all hit it super-effectively with STAB. Blaziken is the most dangerous since Fighting moves deal 4x damage. At base 40 Speed, Lairon won't outrun any of these threats so switching to a resist is usually the safer play.

  • Aron evolves into Lairon at level 32. Lairon evolves into Aggron at level 42. Lairon is a middle-stage evolution in the Aron line.

  • Sturdy prevents being KOed from full HP, leaving 1 HP instead — that's the one you want on Lairon. Heavy Metal is the hidden ability. Niche, but it has its uses. Rock Head works too if your team needs something different.

  • Lairon is a physical attacker with base 90 Attack. Enough bulk to take a hit or two, too. But the speed tells the real story — base 40 Speed is low. Priority moves or Trick Room are the way to go. Fits the trick room role.

  • Lairon appears in 15 games, including Ruby & Sapphire, FireRed & LeafGreen, and Emerald.

Debuting in Ruby & Sapphire, Lairon appears in 15 games across 7 generations. A reliable presence in most mainline games, typically found through catching or hatching as a base form.