Physical
Trick Room
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
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
No Sun Moon entries available

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 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 in Sun & Moon (Best Counters)
Gastrodon
Gastrodon
WaterGround
B
Available Moves
Moves
  • EarthquakeTM26
  • Muddy WaterLv. 41
  • SurfTM94
  • ScaldTM55
Damage vs Lairon
Earthquake 4x
113-133%KO
Muddy Water 2x
122-144%KO
Surf 2x
122-144%KO
Scald 2x
109-129%KO
View Gastrodon builds →

Sun & Moon 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
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 79 partners 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
Breed With (best first)
venusaurcharizardblastoisenidokingmeganiumferaligatrampharossceptileswampertslowbrorhydonslowking

Sun & Moon Lairon Best Moveset

Best Build

No build content available for this Pokemon in Gen 7.

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 Head Smash and Iron Tail while coverage across 7 types adds range.

Level-Up Moves

Lv 1
Harden
D30Normal
Lv 1
Headbutt
C7010015Normal
Lv 1
Mud-Slap
D2010010Ground
Lv 1
Tackle
4010035Normal
Lv 4
Mud-Slap
D2010010Ground
Lv 7
Headbutt
C7010015Normal
Lv 10
Metal Claw
C509535Steel
Lv 13
Rock Tomb
C609515Rock
Lv 16
Protect+4
C10Normal
Lv 19
Roar-6
C20Normal
Lv 22
Iron Head
C8010015Steel
Lv 25
Rock Slide
C759010Rock
Lv 28
Take Down
908520Normal
Lv 31
Metal Sound
8540Steel
Lv 35
Iron Tail
C1007515Steel
Lv 39
Iron Defense
C15Steel
Lv 43
Double-Edge
C12010015Normal
Lv 47
Autotomize
D15Steel
Lv 51
Heavy Slam
D10010Steel
Lv 55
Metal Burst
D10010Steel

TM Moves

TM
TM40
Aerial Ace
D6020Flying
TM45
Attract
C10015Normal
TM78
Bulldoze
D6010020Ground
TM100
Confide
D20Normal
TM32
Double Team
15Normal
TM26
Earthquake
C10010010Ground
TM42
Facade
C7010020Normal
TM21
Frustration
D10020Normal
TM10
Hidden Power
6010015Normal
TM17
Protect+4
C10Normal
TM18
Rain Dance
C5Water
TM44
Rest
C10Psychic
TM27
Return
D10020Normal
TM05
Roar-6
C20Normal
TM69
Rock Polish
C20Rock
TM80
Rock Slide
C759010Rock
TM39
Rock Tomb
C609515Rock
TM48
Round
D6010015Normal
TM37
Sandstorm
D10Rock
TM65
Shadow Claw
C7010015Ghost
TM88
Sleep Talk
C10Normal
TM71
Stone Edge
C100805Rock
TM90
Substitute
C10Normal
TM11
Sunny Day
C5Fire
TM87
Swagger
D8515Normal
TM06
Toxic
C9010Poison

Egg Moves

Egg
Egg
Body Slam
C8510015Normal
Egg
Curse
C10Ghost
Egg
Dragon Rush
1007510Dragon
Egg
Endeavor
D1005Normal
Egg
Head Smash
B150805Rock
Egg
Iron Head
C8010015Steel
Egg
Reversal
D10015Fighting
Egg
Screech
8540Normal
Egg
Smelling Salts
7010010Normal
Egg
Stealth Rock
C20Rock
Egg
Stomp
6510020Normal
Egg
Superpower
C1201005Fighting

Tutor Moves

Lairon can't learn any Tutor moves

Transfer Moves

Gen
Gen 4
Ancient Power
D601005Rock
Gen 4
Captivate
10020Normal
Gen 6
Cut
509530Normal
Gen 3
Defense Curl
D40Normal
Gen 6
Dig
C8010010Ground
Gen 4
Endure+4
C10Normal
Gen 4
Fury Cutter
D409520Bug
Gen 6
Hone Claws
C15Dark
Gen 3
Mimic
D10Normal
Gen 4
Natural Gift
10015Normal
Gen 6
Rock Smash
D4010015Fighting
Gen 4
Rollout
D309020Rock
Gen 6
Secret Power
7010020Normal
Gen 6
Strength
8010015Normal

How to Get Lairon in Sun & Moon

No wild encounters for Lairon in Sun & Moon. Bring Aron over from Ruby, Emerald, or Brilliant Diamond, then level through the stages. Each step in the chain is laid out below.

How to Obtain Lairon in Sun & Moon

  1. Lairon
    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 Sun & Moon, 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 Sun & Moon, 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.

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