Physical
Balanced
330Low
30Very Slow
DTier

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.

Base Stats
330Avg
HP50
D
Attack70
C
Defense100
B
Sp. Atk40
D
Sp. Def40
D
Speed30
F
Total330
Low <60
Avg 60-89
High 90-149
Top 150+
EV YieldDefeating Aron yields +1 Def
HPAtkDef+1SpASpDSpe
Details
Catch180ModerateSlow1.25M XP0.4m / 1'04"60kg / 132.3 lbs66Base XP
Pokedex Entries

It usually lives deep in mountains. But when it’s hungry, it shows up at the foot of the mountains and eats railroad tracks and cars.

Brilliant Diamond / Shining Pearl

Aron Weakness

Good

Aron 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 8 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.

4xCriticali
2xWeaki
¼xResisti
0xImmunei
3Weak
8Resist
1Immune
Scorei+3
SpikesGrounded — up to 25%
4x Fighting — Close Combat, Drain Punch, Focus Blast
4x Ground — Earthquake, Earth Power, Scorching Sands
Abilities
SturdyPrevents being KOed from full HP, leaving 1 HP instead. Protects against the one-hit KO moves regardless of HP.
Rock HeadProtects against recoil damage.
Heavy MetalHADoubles the Pokémon's weight.

Three stages ahead. Aron grows into Lairon, then pushes on to Aggron. Check the evolution methods below. For breeding, slow to hatch with no compatible partners via one egg group. Evolving adds up to 200 stat points total.

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 Aron from the Monster egg group. Pass egg moves like Body Slam, Curse, Dragon Rush and 9 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
12moves

Aron runs a standard attacker set. Hardy nature with a spread EV build EVs shapes the build, while Shellbell brings extra utility. Sturdy supports the kit from the background.

Best Build

Utility
Ability
Sturdy
Item
Shellbell
Nature
Hardy
EVs

Best Aron Moveset

  • EndeavorCoverage
  • Iron HeadSTAB
  • DigCoverage
  • Unknown

Recommended Teammates

Breeding opens up real options for Aron. Body Slam and Curse come exclusively from egg moves, and they're worth the effort. The rest of the kit covers basics through Head Smash and Iron Tail and coverage across 7 types.

Level-Up Moves

Lv 1
Harden
30Normal
Lv 1
Tackle
4010035Normal
Lv 4
Mud-Slap
2010010Ground
Lv 7
Headbutt
7010015Normal
Lv 10
Metal Claw
509535Steel
Lv 13
Rock Tomb
609515Rock
Lv 16
Protect+4
10Normal
Lv 19
Roar-6
20Normal
Lv 22
Iron Head
8010015Steel
Lv 25
Rock Slide
759010Rock
Lv 28
Take Down
908520Normal
Lv 31
Metal Sound
8540Steel
Lv 34
Iron Tail
1007515Steel
Lv 37
Iron Defense
15Steel
Lv 40
Double-Edge
12010015Normal
Lv 43
Autotomize
15Steel
Lv 46
Heavy Slam
10010Steel
Lv 49
Metal Burst
10010Steel

TM Moves

Src
TM40
Aerial Ace
6020Flying
TM45
Attract
10015Normal
TM78
Bulldoze
6010020Ground
TM100
Confide
20Normal
TM32
Double Team
15Normal
TM26
Earthquake
10010010Ground
TM42
Facade
7010020Normal
TM21
Frustration
10020Normal
TM10
Hidden Power
6010015Normal
TM17
Protect+4
10Normal
TM18
Rain Dance
5Water
TM44
Rest
10Psychic
TM27
Return
10020Normal
TM05
Roar-6
20Normal
TM69
Rock Polish
20Rock
TM80
Rock Slide
759010Rock
TM39
Rock Tomb
609515Rock
TM48
Round
6010015Normal
TM37
Sandstorm
10Rock
TM65
Shadow Claw
7010015Ghost
TM88
Sleep Talk
10Normal
TM90
Substitute
10Normal
TM11
Sunny Day
5Fire
TM87
Swagger
8515Normal
TM06
Toxic
9010Poison

Egg Moves

Src
Egg
Body Slam
8510015Normal
Egg
Curse
10Ghost
Egg
Dragon Rush
1007510Dragon
Egg
Endeavor
1005Normal
Egg
Head Smash
150805Rock
Egg
Iron Head
8010015Steel
Egg
Reversal
10015Fighting
Egg
Screech
8540Normal
Egg
Smelling Salts
7010010Normal
Egg
Stealth Rock
20Rock
Egg
Stomp
6510020Normal
Egg
Superpower
1201005Fighting

Tutor Moves

Aron can't learn any Tutor moves

Transfer Moves

Src
Gen 4
Ancient Power
601005Rock
Gen 4
Captivate
10020Normal
Gen 6
Cut
509530Normal
Gen 3
Defense Curl
40Normal
Gen 6
Dig
8010010Ground
Gen 4
Endure+4
10Normal
Gen 4
Fury Cutter
409520Bug
Gen 6
Hone Claws
15Dark
Gen 3
Mimic
10Normal
Gen 4
Natural Gift
10015Normal
Gen 6
Rock Smash
4010015Fighting
Gen 4
Rollout
309020Rock
Gen 6
Secret Power
7010020Normal
Gen 6
Strength
8010015Normal

No wild encounters for Aron in Sun & Moon. It's available in Ruby, Emerald, or Brilliant Diamond and can be transferred over. The details below show where to find it.

Aron is not available as a wild encounter in this game.

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.