What does Aron evolve into?

Aron becomes Lairon at level 32, then Aggron at level 42. Straight three-stage line with no branching.

At what level does Aron evolve?

Aron evolves into Lairon at level 32. Takes some grinding. Plan your team around the mid-game wait.

For FireRed & LeafGreen, you can run Aron through the first few routes without issues. 330 BST won't carry you far though. Get it to Lairon as fast as you can.

Where can you catch Aron?

Aron is catchable in FireRed & LeafGreen. Check the Locations section above for specific routes, encounter rates, and methods. It also appears in 14 other games across the series.

Aron - Weakness, Evolution, Moveset, EVs & Stats

Physical

Balanced

DTier

30Speed · Very Slow

Stats & Training

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.

Base Stats

Avg

HP50

Attack70

Defense100

Sp. Atk40

Sp. Def40

Speed30

Total330

Details

Catch Rate

Moderate180 / 255

Growth Rate

Slow1.25M XP

Height0.4 m

Weight60.0 kg

Base XP66

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+1SpASpDSpe

Defense training source

Pokedex Entries

It eats iron to build its steel body. It is a pest that descends from mountains to eat bridges and train tracks.

Aron Weakness

Aron is weak to Fighting, Ground, and Water. 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.

Aron 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 III Type Chart

Dark and Steel types added — Fairy does not exist yet
Moves are Physical or Special based on type, not per move

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 Aron in FireRed & LeafGreen (Best Counters)

In FireRed & LeafGreen, Heracross's Megahorn hits Aron for 40-47%. Gyarados threatens a KO with Earthquake (195-229%). Flygon's Earthquake also KOs at 182-214%.

Heracross BugFighting	B
Recommended Build AbilitySwarm ItemSalacberry NatureJolly Moves MegahornSTAB Rock Slide Swords Dance SubstituteUtility Damage vs Aron Megahorn 40-47% Rock Slide 17-20% View Heracross builds →
Gyarados WaterFlying	B
Recommended Build AbilityIntimidate ItemLeftovers NatureAdamant Moves Earthquake Dragon Dance Hidden Power Flying TauntUtility Damage vs Aron Earthquake 4x 195-229%KO View Gyarados builds →
Flygon GroundDragon	B
Recommended Build AbilityLevitate ItemLeftovers NatureImpish Moves EarthquakeSTAB Rock Slide ToxicUtility ProtectPriority Damage vs Aron Earthquake 4x 182-214%KO Rock Slide 11-13% View Flygon builds →
Machamp Fighting	B
Recommended Build AbilityGuts ItemLeftovers NatureAdamant Moves Rock Slide Cross Chop Hidden Power Ghost Bulk Up Damage vs Aron Rock Slide 19-22% View Machamp builds →

FireRed & LeafGreen Evolution

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. 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 Aron with 49 breeding partners from the Monster egg group. Pass egg moves like Body Slam, Endeavor, Smelling Salts and 1 more to offspring.

Egg Groups

Monster

Gender

♂50.0%♀50.0%

Hatch Time

35 cycles·8,995 steps

Slow~9 min with Flame Body

Egg Moves

4moves

Breed With (best first)

FireRed & LeafGreen Aron Best Moveset

Best Build

No build content available for this Pokemon in Gen 3.

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

Moves

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

Lv 1

Tackle

—3510035Normal

Lv 4

Harden

D——30Normal

Lv 7

Mud-Slap

D2010010Ground

Lv 10

Headbutt

D7010015Normal

Lv 13

Metal Claw

—509535Steel

Lv 17

Iron Defense

———15Steel

Lv 21

Roar-6

C——20Normal

Lv 25

Take Down

D908520Normal

Lv 29

Iron Tail

C1007515Steel

Lv 34

Protect+4

C——10Normal

Lv 39

Metal Sound

——8540Steel

Lv 44

Double-Edge

C12010015Normal

TM Moves

TM40

Aerial Ace

D60—20Flying

TM45

Attract

——10015Normal

HM01

Cut

—509530Normal

TM28

Dig

—6010010Ground

TM32

Double Team

———15Normal

TM26

Earthquake

C10010010Ground

TM42

Facade

D7010020Normal

TM21

Frustration

——10020Normal

TM10

Hidden Power

—6010015Normal

TM23

Iron Tail

C1007515Steel

TM17

Protect+4

C——10Normal

TM18

Rain Dance

C——5Water

TM44

Rest

C——10Psychic

TM27

Return

D—10020Normal

TM05

Roar-6

C——20Normal

HM06

Rock Smash

—2010015Fighting

TM39

Rock Tomb

—609510Rock

TM37

Sandstorm

———10Rock

TM43

Secret Power

—7010020Normal

TM34

Shock Wave

—60—20Electric

HM04

Strength

—8010015Normal

TM11

Sunny Day

C——5Fire

TM06

Toxic

C—8510Poison

TM03

Water Pulse

—6010020Water

Egg Moves

Egg

Body Slam

D8510015Normal

Egg

Endeavor

D—1005Normal

Egg

Smelling Salts

—7010010Normal

Egg

Stomp

D6510020Normal

Tutor Moves

Tut

Tutor

Body Slam

D8510015Normal

Tutor

Double-Edge

C12010015Normal

Tutor

Mimic

———10Normal

Tutor

Rock Slide

C759010Rock

Tutor

Substitute

C——10Normal

How to Get Aron in FireRed & LeafGreen

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:

RubyWalking · Granite Cave EmeraldWalking · Granite Cave

Then trade to FireRed & LeafGreen.

Also found in:

Diamond Platinum White Black 2 X Omega Ruby

Aron Guide

Aron becomes Lairon at level 32, then Aggron at level 42. Straight three-stage line with no branching.
Aron evolves into Lairon at level 32. Takes some grinding. Plan your team around the mid-game wait.
For FireRed & LeafGreen, you can run Aron through the first few routes without issues. 330 BST won't carry you far though. Get it to Lairon as fast as you can.
Aron is catchable in FireRed & LeafGreen. Check the Locations section above for specific routes, encounter rates, and methods. It also appears in 14 other games across the series.

Game Availability

Available in 15 titles since its debut in Ruby & Sapphire, Aron spans 8 generations of Pokemon games. It's accessible through catching or hatching as a base form in most mainline games.

Click a game to view version-specific details

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