Physical
Trick Room
40Speed · Very Slow

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
Above
HP60
C
Attack90
B
Defense140
A
Sp. Atk50
D
Sp. Def50
D
Speed40
D
Total430
Details
Catch Rate
Challenging90 / 255
Growth Rate
Slow1.25M XP
Height0.9 m
Weight120.0 kg
Base XP151
Abilities
Sturdy
Prevents being KOed from full HP, leaving 1 HP instead. Protects against the one-hit KO moves regardless of HP.
Rock Head
Protects against recoil damage.
Heavy MetalHA
Doubles the Pokémon's weight.
EV Yield
HPAtkDef+2SpASpDSpe
Defense training target
Pokedex Entries

For food, it digs up iron ore. It smashes its steely body against others to fight over territory.

Fighting, Ground, and Water 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.

Lairon Weakness and Resistance Chart
DamageTypes
4x (Critical)Fighting, Ground
2x (Weak)Water
0.5x (Resist)Ice, Psychic, Bug, Rock, Dragon, Fairy
0.25x (Resist)Normal, Flying
0x (Immune)Poison
Type ChartGood
3Weak
8Resist
1Immune
Score+3
How to Beat Lairon (Best Counters)

Annihilape's Drain Punch also KOs at 113-133%.

Landorus
Landorus
GroundFlying
S
Recommended Build
AbilitySheerforce
ItemLife Orb
NatureTimid
Moves
  • Sludge Bomb
  • ProtectPriority
  • Earth Power
  • SubstituteUtility
View Landorus builds →

Lairon sits between Aron and Aggron in this three-stage line. Not the final form yet. For breeding, slow to hatch with plenty of partners via one egg group. So far, Defense got the biggest boost (+40 from Aron). The final form adds another 100 stats on top. View every chain in the Evolution Chart.

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 using 81 partners from the Monster egg group.

Egg Groups
Monster
Gender
50.0%50.0%
Hatch Time
35 cycles·8,995 steps
Slow~9 min with Flame Body
Breed With (best first)
venusaurcharizardblastoisenidokingmeganiumferaligatrampharossceptileswampertslowbrorhydonslowking

Best Build

All 15 games

No build content available for this Pokemon in Gen 9.

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

Moves

All 15 games

The level-up pool tells the story here. Lairon learns Take Down and Iron Tail naturally, plus enough variety that TMs feel like bonuses. Normal and Ground coverage extends the reach beyond that.

Level-Up Moves

Lv 1
Harden
D30Normal
Lv 1
Screech
C8540Normal
Lv 1
Tackle
D4010035Normal
Lv 4
Metal Claw
509535Steel
Lv 8
Rock Tomb
C609515Rock
Lv 12
Roar-6
C20Normal
Lv 16
Headbutt
C7010015Normal
Lv 20
Protect+4
C10Normal
Lv 24
Rock Slide
C759010Rock
Lv 28
Iron Head
C8010015Steel
Lv 33
Metal Sound
D8540Steel
Lv 36
Take Down
C908520Normal
Lv 44
Iron Tail
C1007515Steel
Lv 48
Iron Defense
C15Steel
Lv 52
Heavy Slam
D10010Steel
Lv 56
Double-Edge
C12010015Normal
Lv 66
Head Smash
B150805Rock

TM Moves

TM
TM33
Body Slam
C8510015Normal
TM78
Bulldoze
D6010020Ground
TM28
Dig
C8010010Ground
TM56
Double-Edge
C12010015Normal
TM52
Earth Power
D9010010Ground
TM69
Earthquake
C10010010Ground
TM35
Endure+4
C10Normal
TM109
Facade
C7010020Normal
TM01
Headbutt
C7010015Normal
TM80
Iron Defense
C15Steel
TM58
Iron Head
C8010015Steel
TM87
Iron Tail
C1007515Steel
TM46
Mud Shot
D559515Ground
TM17
Protect+4
C10Normal
TM05
Roar-6
C20Normal
TM12
Rock Slide
C759010Rock
TM36
Rock Tomb
C609515Rock
TM61
Shadow Claw
C7010015Ghost
TM37
Stealth Rock
C20Rock
TM157
Steel Beam
C140955Steel
TM65
Stone Edge
C100805Rock
TM85
Substitute
C10Normal

Egg Moves

Lairon doesn't have any Egg moves

Tutor Moves

Lairon can't learn any Tutor moves
All 15 games

Lairon can't be caught in Legends: Z-A. Transfer Aron from Ruby, Emerald, or Brilliant Diamond and evolve through the 2-stage line to get it. The step cards below map the full chain.

How to Obtain Lairon in Legends: Z-A

  1. Lairon
    Step 2Lairon
  • 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. 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.

Debuting in Ruby & Sapphire, Lairon appears in 15 games across 8 generations. A reliable presence in most mainline games, typically found through catching or hatching as a base form.

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