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

What is Lairon weak to?

In Diamond & Pearl, 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.

How do you evolve Lairon?

In Diamond & Pearl, Aron evolves into Lairon at level 32. Lairon evolves into Aggron at level 42. Lairon is a middle-stage evolution in the Aron line.

What is the best ability for Lairon?

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.

What role does Lairon play in battle?

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.

Lairon - Weakness, Evolution, Moveset, EVs & Stats

Physical

Trick Room

DTier

40Speed · Very Slow

Stats & Training

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

Attack90

Defense140

Sp. Atk50

Sp. Def50

Speed40

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 MetalHANot in game

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.

Lairon Weakness

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 9 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
Damage	Types
4x (Critical)	Fighting, Ground
2x (Weak)	Water
0.5x (Resist)	Ice, Psychic, Bug, Rock, Ghost, Dragon, Dark
0.25x (Resist)	Normal, Flying
0x (Immune)	Poison

Type ChartGood

3Weak

9Resist

1Immune

Score+4

Gen IV Type Chart

Fairy type does not exist — Dragon has fewer checks
Physical / Special split now per-move (introduced Gen IV)

4xCritical

Fighting Ground

2xWeak

Water

½xResist

Ice Psychic Bug Rock Ghost Dragon Dark

¼xResist

Normal Flying

0xImmune

Poison

STAB (5)

Ice Rock Fire Flying Bug

How to Beat Lairon in Diamond & Pearl (Best Counters)

In Diamond & Pearl, Infernape can KO Lairon with Close Combat (193-228%). Flygon threatens a KO with Earthquake (158-186%). Swampert's Earthquake also KOs at 137-161%.

Infernape FireFighting	A
Recommended Build AbilityBlaze ItemExpert Belt NatureJolly Moves Close Combat U Turn Grass Knot Fire Blast Damage vs Lairon Close Combat 4x 193-228%KO U Turn 10-11% Fire Blast 73-86% View Infernape builds →
Flygon GroundDragon	A
Recommended Build AbilityLevitate ItemChoice Scarf NatureJolly Moves EarthquakeSTAB OutrageSTAB U Turn Thunder Punch Damage vs Lairon Earthquake 4x 158-186%KO Outrage 23-28% U Turn 9-11% View Flygon builds →
Swampert WaterGround	B
Recommended Build AbilityTorrent ItemLeftovers NatureRelaxed Moves EarthquakeSTAB Stealth Rock Ice Beam WaterfallSTAB Damage vs Lairon Earthquake 4x 137-161%KO Ice Beam 19-22% Waterfall 2x 54-64% View Swampert builds →
Lucario FightingSteel	B
Recommended Build AbilityInnerfocus ItemLife Orb NatureAdamant Moves Close Combat Extreme Speed Swords Dance Bullet Punch Damage vs Lairon Close Combat 4x 287-338%KO Extreme Speed 8-9% Bullet Punch 25-29% View Lucario builds →

Diamond & Pearl Evolution

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

#304Aron

Level 32

#305Lairon

Level 42

#306Aggron

Stat Comparison 3 Stages

Aron

SteelRock

Lairon

SteelRock

Aggron

SteelRock

60+10

70+10

ATK

90+20

110+20

DEF

100

140+40

180+40

SP.ATK

50+10

60+10

SP.DEF

50+10

60+10

SPE

40+10

50+10

BST

330D-Tier

430D-Tier+100

530C-Tier+100

ROLE

Balanced

Trick Room

Balanced

TYPE

Physical

Breeding

Moderate

Breed with Lairon to get Aron eggs using 63 partners from the Monster egg group. Notable egg moves include Body Slam, Curse, Dragon Rush and 5 more.

Egg Groups

Monster

Gender

♂50.0%♀50.0%

Hatch Time

35 cycles·8,995 steps

Slow~9 min with Flame Body

Egg Moves

8moves

Breed With (best first)

Diamond & Pearl Lairon Best Moveset

Best Build

No build content available for this Pokemon in Gen 4.

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

Moves

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 Iron Tail and Stone Edge while coverage across 8 types adds range.

Level-Up Moves

Lv 1

Harden

———30Normal

Lv 1

Headbutt

C7010015Normal

Lv 1

Mud-Slap

D2010010Ground

Lv 1

Tackle

—3510035Normal

Lv 4

Harden

———30Normal

Lv 8

Mud-Slap

D2010010Ground

Lv 11

Headbutt

C7010015Normal

Lv 15

Metal Claw

—509535Steel

Lv 18

Iron Defense

D——15Steel

Lv 22

Roar-6

C——20Normal

Lv 25

Take Down

—908520Normal

Lv 29

Iron Head

C8010015Steel

Lv 34

Protect+4

C——10Normal

Lv 40

Metal Sound

——8540Steel

Lv 45

Iron Tail

C1007515Steel

Lv 51

Double-Edge

C12010015Normal

Lv 56

Metal Burst

D—10010Steel

TM Moves

TM40

Aerial Ace

D60—20Flying

TM45

Attract

——10015Normal

TM78

Captivate

——10020Normal

HM01

Cut

—509530Normal

TM28

Dig

C8010010Ground

TM32

Double Team

———15Normal

TM26

Earthquake

C10010010Ground

TM58

Endure+4

———10Normal

TM42

Facade

C7010020Normal

TM21

Frustration

D—10020Normal

TM10

Hidden Power

—6010015Normal

TM23

Iron Tail

C1007515Steel

TM83

Natural Gift

D—10015Normal

TM17

Protect+4

C——10Normal

TM18

Rain Dance

C——5Water

TM44

Rest

C——10Psychic

TM27

Return

D—10020Normal

TM05

Roar-6

C——20Normal

TM69

Rock Polish

C——20Rock

TM80

Rock Slide

C759010Rock

HM06

Rock Smash

D4010015Fighting

TM39

Rock Tomb

C609510Rock

TM37

Sandstorm

———10Rock

TM43

Secret Power

—7010020Normal

TM65

Shadow Claw

C7010015Ghost

TM34

Shock Wave

D60—20Electric

TM82

Sleep Talk

C——10Normal

TM76

Stealth Rock

C——20Rock

TM71

Stone Edge

C100805Rock

HM04

Strength

C8010015Normal

TM90

Substitute

C——10Normal

TM11

Sunny Day

C——5Fire

TM87

Swagger

——9015Normal

TM06

Toxic

C—8510Poison

TM03

Water Pulse

D6010020Water

Egg Moves

Egg

Body Slam

C8510015Normal

Egg

Curse

C——10Ghost

Egg

Dragon Rush

—1007510Dragon

Egg

Endeavor

D—1005Normal

Egg

Iron Head

C8010015Steel

Egg

Screech

——8540Normal

Egg

Smelling Salts

—7010010Normal

Egg

Stomp

—6510020Normal

Tutor Moves

Lairon can't learn any Tutor moves

Transfer Moves

Gen

Gen 3

Defense Curl

———40Normal

Gen 3

Mimic

———10Normal

How to Get Lairon in Diamond & Pearl

You're catching Aron first, not Lairon. Aron appears at decent rates in the encounters below. The step cards map the full 2-stage line with evolution methods between each stage.

How to Obtain Lairon in Diamond & Pearl

Step 1Catch Aron
Fuego Ironworks
Using PokeRadar Lv.29-30 Power-plant
UncommonMid
Train until Level 32
Step 2Lairon ✓

Lairon Guide

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

Game Availability

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.

Click a game to view version-specific details

Was this page helpful?

Thanks for your feedback!

Want to tell us more?

What was most useful?

About:

What could be improved?

About:

Thanks for your feedback