Aron sits at the start of its evolution line — not yet at full power, but that changes fast. Most trainers push through to Aggron as fast as possible. Known as the Iron Armor Pokemon. Built to hit on the physical side.
Defense and Attack carry most of Aron's stat budget. Speed's the obvious dump stat. Common in the wild and yields 1 Defense EV. Follows a slow 1.25M XP grind.
It eats iron to build its steel body. It is a pest that descends from mountains to eat bridges and train tracks.
Aron Weakness
GoodAron is weak to Fighting, Ground, and Water-type moves. Watch out for Fighting and Ground attacks, those deal 4x damage. On the flip side, it's immune to Poison-type moves entirely. With 9 resistances, the defensive profile is strong. Aron's physical bulk (base 100 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
- Dark and Steel types added — Fairy does not exist yet
- Moves are Physical or Special based on type, not per move
Three stages ahead. Aron grows into Lairon, then pushes on to Aggron. Check the evolution methods below. For breeding, slow to hatch with a decent partner pool via one egg group. Evolving adds up to 200 stat points total.
How to Evolve
Breed Aron with 49 breeding partners from the Monster egg group. Pass egg moves like Body Slam, Endeavor, Smelling Salts and 1 more to offspring.
Best Build
No build content available for this Pokemon in Gen 3.
Try selecting a different game/generation filter, or check back later.
Breeding opens up real options for Aron. Body Slam and Endeavor come exclusively from egg moves, and they're worth the effort. The rest of the kit covers basics through Iron Tail and Rock Slide and Normal and Ground coverage and more.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Aron can't be caught in FireRed & LeafGreen. Bring it over from Ruby, Emerald, or Brilliant Diamond instead. The encounter info below covers the source games.
Aron is not available as a wild encounter in this game.
Catch in the wild in:
Then trade to FireRed & LeafGreen.
Also found in:
Aron is meant to evolve into Lairon. At 330 BST, the stats aren't there for competitive play yet. Pre-evolution Pokemon rarely hold up against fully evolved threats.
Aron's biggest threats include Hitmonlee (Fighting), Rhydon (Ground), and Gyarados (Water), all carrying super-effective STAB moves. Hitmonlee is the most dangerous since Fighting moves deal 4x damage. At base 30 Speed, Aron won't outrun any of these threats so switching to a resist is usually the safer play.
Aron evolves into Lairon at level 32. Aron is the base form in a 3-stage evolutionary line.
Sturdy is the go-to ability for Aron. It prevents being KOed from full HP, leaving 1 HP instead. Its hidden ability Heavy Metal can work in specific setups. Rock Head is the other option — pick based on what your team needs.
Base 30 Speed is low. Priority moves or Trick Room are the way to go. On offense, Aron is a physical attacker with base 70 Attack.
Aron appears in 15 games, including Ruby & Sapphire, FireRed & LeafGreen, and Emerald.
Available in 15 titles since its debut in Ruby & Sapphire, Aron spans 7 generations of Pokemon games. It's accessible through catching or hatching as a base form in most mainline games.
- 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