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.
For food, it digs up iron ore. It smashes its steely body against others to fight over territory.
Lairon Weakness
GoodFighting, 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.
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
Breed with Lairon to get Aron eggs from the Monster egg group.
Best Build
No build content available for this Pokemon in Gen 9.
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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
TM Moves
Egg Moves
Tutor Moves
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.
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.
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.
- Gen IY
Yellow - Gen IRB
Red & Blue - Gen IIGS
Gold & Silver - Gen IIC
Crystal - Gen IIIRSDebut
Ruby & Sapphire - Gen IIIFRLG
FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS
HeartGold & SoulSilver - Gen IVDP
Diamond & Pearl - Gen VBW
Black & White - Gen VB2W2
Black 2 & White 2 - Gen VIXY
X & Y - Gen VIORAS
Omega Ruby & Alpha Sapphire - Gen VIIUSUM
Ultra Sun & Ultra Moon - Gen VIISM
Sun & Moon - Gen VIILGPE
Let's Go Pikachu & Eevee - Gen VIIISwSh
Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP
Brilliant Diamond & Shining Pearl - Gen IXSV
Scarlet & Violet - Gen IXLZA
Legends: Z-A