Victory Road (B1F)
20%- Method
- Walking in tall grass or a cave
- Level Range
- Lv. 40
- Conditions
- Any
PokemonLore Pokédex
#305
POKÉDEX No. #305
Lairon
Iron Armor Pokémon
LAIRON tempers its steel body by drinking highly nutritious mineral springwater until it is bloated. This POKéMON makes its nest close to springs of delicious water.
Weak to
Fighting×4
Ground×4
Water
Height0.9 m
Weight120.0 kg
AbilitiesSturdy
Varieties1
Evolution Chain
Base Stats
Lv.100 Range- HP60230–324
- Attack90166–306
- Defense140256–416
- Sp. Atk5094–218
- Sp. Def5094–218
- Speed4076–196
Total430
/ 720
BST430
47 percentile (1025)+20 vs Gen 3 avg (410)
Stat Radar
This PokémonAverage
Weak toFightingGroundWater
Resists
Normal
FlyingRock
Bug
Psychic
Ice
Dragon
Fairy
Immune
Poison
Full Type Defense Chart ↓Species Identity
Core species facts, alternate varieties, and Pokédex placements at a glance.
Generation
Generation 3
Habitat
Mountain
Color
Gray
Shape
Quadruped
Gender Difference
No
Forms Switchable
No
Evolves From
Aron#304Regional Pokédex Numbers
| National | #305 |
| Conquest Gallery | #150 |
| Crown Tundra | #192 |
| Hoenn | #71 |
| Kalos Mountain | #100 |
| Lumiose City | #200 |
| Updated Hoenn | #73 |
| Updated Unova | #167 |
Training Profile
Battle-ready training facts pulled from EV yield, growth curve, and wild held item data.
Base Experience
151
EV Yield
+2 Defense
Growth Curve
Slow
(5x³) / (4)Exp at Lv. 50
156,250
Exp at Lv. 100
1,250,000
Wild Held Items
Hard Stone
Max rarity: 5%Versions: Ruby, Sapphire, Emerald, Firered
Evolution Chain
Type Matchups
Understanding damage taken from different types is crucial for battles. Plan your team accordingly!
Weaknesses
Resistances
Tip: Build your team with Pokémon that cover each other's weaknesses!
Full Type Defense Chart
Damage multipliers from all 18 attacking types
Battle StrategyRock
Ice
Fairy
Flying
Bug
Fire
Offensive Coverage
Lairon's Steel / Rock typing gives it 3 weaknesses but strong offensive coverage against rock, ice, fairy, flying, bug, fire types
Recommended NaturesBased on stat distribution
Adamant
+Attack−Sp. Atk
Brave
+Attack−Speed
Bold
+Defense−Attack
In-Depth Analysis
Lairon totals 430 across its base stats, profiling as a balanced Pokémon with a flexible stat spread. Lean on its Defense (140) when planning sets, and cover for its weaker Speed (40).
Defensively, the Steel, Rock combination gives Lairon 8 resistances, 1 immunity, and 3 weaknesses to plan around. Watch out for Fighting, Ground moves in particular — they land for 4× damage. Offensively it pressures 6 types with super-effective STAB coverage.
A catch rate of 90 puts Lairon in the moderate range — a few Great Balls usually get the job done. It levels on the Slow experience curve. Defeating it grants Defense +2 EVs, which is worth remembering when EV-training your own team.
Related Guides & News
Related Pokémon
Reference Data
Names in Other Languages
Sprite Gallery
Pokédex Data
Height
0.9 m
Weight
120.0 kg
TypeSteelRock
Abilities
Prevents being KOed from full HP, leaving 1 HP instead. Protects against the one-hit KO moves regardless of HP.
Protects against recoil damage.
Doubles the Pokémon's weight.
Breeding Information
Breeding Information
🥚
Egg Groups
Monster
⚧
Gender Ratio
♂
50%
♀
50%
🐣
Hatch Steps
8,925
Hatch Counter: 35
⚪
Capture Rate
90
Higher values mean easier to catch
❤️
Base Happiness
35
Initial friendship level
📈
Growth Rate
Slow
Experience points needed to level up
Move Name
Pokédex Entries
Frequently Asked Questions
What type is Lairon?
Lairon is a dual-type Steel, Rock Pokémon.
What are Lairon's weaknesses?
Lairon takes 4× damage from Fighting, Ground type moves and takes 2× damage from Water type moves. It is immune to Poison type moves.
How does Lairon evolve?
Lairon evolves into Aggron at level 42. Full evolution line: Aron → Lairon → Aggron.
What are Lairon's base stats?
Lairon has a base stat total of 430: HP 60, Attack 90, Defense 140, Sp. Atk 50, Sp. Def 50, Speed 40. Its highest stat is Defense (140).
