Physical
Trick Room
30Speed · Very Slow

Is Steelix Good in FireRed & LeafGreen Playthrough?

Onix trade evolution with Metal Coat, blocked until the National Dex. AbilityRock Head or AbilitySturdy. Steel/Ground with massive Defense. Steelix is the upgrade Onix desperately needed, but the evolution lock keeps it postgame-only.

StrongGoodEvenToughBadTTETEGEGEGEEEBrockGym 1MistyGym 2SurgeGym 3OnixCatchableSteelixEvolveErikaGym 4KogaGym 5SabrinaGym 6BlaineGym 7GiovanniGym 8LoreleiE4BrunoE4AgathaE4LanceE4TerryChamp*
Brock
Gym 1
Tough

Brock's typing presses Onix's defenses.

Risky
Geodude
Lv 12
RockGround
Rock Head
TackleDefense Curl
Risky
Onix
Lv 14
RockGround
Rock Head
TackleBindRock Tomb
Misty
Gym 2
Tough

Misty's team hits Onix's weaknesses hard.

Risky
Staryu
Lv 18
Water
Illuminate
TackleHardenRecoverWater Pulse
Risky
Starmie
Lv 21
WaterPsychic
Illuminate
SwiftRecoverRapid SpinWater Pulse
Lt. Surge
Gym 3
Even

Onix trades roughly evenly with Lt. Surge's team.

Even
Voltorb
Lv 21
Electric
Soundproof
Sonic BoomTackleScreechShock Wave
You Win
Pikachu
Lv 18
Electric
Static
Quick AttackThunder WaveDouble TeamShock Wave
Even
Raichu
Lv 24
Electric
Static
Quick AttackThunder WaveDouble TeamShock Wave
Erika
Gym 4
Tough

Erika's typing presses Steelix's defenses.

Even
Victreebel
Lv 29
GrassPoison
Chlorophyll
Stun SporeAcidPoison PowderGiga Drain
Risky
Tangela
Lv 24
Grass
Chlorophyll
Poison PowderConstrictIngrainGiga Drain
Risky
Vileplume
Lv 29
GrassPoison
Chlorophyll
Sleep PowderAcidStun SporeGiga Drain
Koga
Gym 5
Even

Steelix trades roughly evenly with Koga's team.

Even
Koffing
Lv 37
Poison
LevitateImmune to Ground attacks
Self DestructSludgeSmokescreenToxic
You Win
Muk
Lv 39
Poison
Stench
MinimizeSludgeAcid ArmorToxic
Even
Koffing
Lv 37
Poison
LevitateImmune to Ground attacks
Self DestructSludgeSmokescreenToxic
Risky
Weezing
Lv 43
Poison
LevitateImmune to Ground attacks
TackleSludgeSmokescreenToxic
Sabrina
Gym 6
Good

Steelix has the type edge here and should clean up Sabrina's team.

You Win
Kadabra
Lv 38
Psychic
Synchronize
PsybeamReflectFuture SightCalm Mind
You Win
Mr Mime
Lv 37
PsychicFairy
Soundproof
BarrierPsybeamBaton PassCalm Mind
You Win
Venomoth
Lv 38
BugPoison
Shield Dust
PsybeamGustLeech LifeSupersonic
Even
Alakazam
Lv 43
Psychic
Synchronize
PsychicRecoverFuture SightCalm Mind
Blaine
Gym 7
Even

Steelix trades roughly evenly with Blaine's team.

You Win
Growlithe
Lv 42
Fire
Intimidate
BiteRoarTake DownFire Blast
You Win
Ponyta
Lv 40
Fire
Run Away
StompBounceFire SpinFire Blast
Even
Rapidash
Lv 42
Fire
Run Away
StompBounceFire SpinFire Blast
Even
Arcanine
Lv 47
Fire
Intimidate
BiteRoarTake DownFire Blast
Giovanni
Gym 8
Good

Steelix has the type edge here and should clean up Giovanni's team.

Easy KO
Rhyhorn
Lv 45
GroundRock
Lightning Rod
Take DownRock BlastScary FaceEarthquake
You Win
Dugtrio
Lv 42
Ground
Sand Veil
SlashSand TombMud SlapEarthquake
You Win
Nidoqueen
Lv 44
PoisonGround
Poison Point
Body SlamDouble KickPoison StingEarthquake
You Win
Nidoking
Lv 45
PoisonGround
Poison Point
ThrashDouble KickPoison StingEarthquake
You Win
Rhyhorn
Lv 50
GroundRock
Lightning Rod
Take DownRock BlastScary FaceEarthquake
Lorelei
Elite Four
Even

Steelix trades roughly evenly with Lorelei's team.

Even
Dewgong
Lv 52
WaterIce
Thick Fat
Ice BeamSurfHailSafeguard
Risky
Cloyster
Lv 51
WaterIce
Shell Armor
SpikesProtectHailDive
Risky
Slowbro
Lv 52
WaterPsychic
Oblivious
Ice BeamSurfAmnesiaYawn
You Win
Jynx
Lv 54
IcePsychic
Oblivious
Ice PunchDouble SlapLovely KissAttract
Even
Lapras
Lv 54
WaterIce
Water Absorb
Confuse RayIce BeamSurfBody Slam
Bruno
Elite Four
Good

Steelix has the type edge here and should clean up Bruno's team.

You Win
Onix
Lv 51
RockGround
Rock Head
EarthquakeRock TombIron TailRoar
Even
Hitmonchan
Lv 53
Fighting
Keen Eye
Sky UppercutMach PunchRock TombCounter
Even
Hitmonlee
Lv 53
Fighting
Limber
Mega KickForesightBrick BreakFacade
You Win
Onix
Lv 54
RockGround
Rock Head
Double EdgeEarthquakeIron TailSand Tomb
Even
Machamp
Lv 56
Fighting
Guts
Cross ChopBulk UpScary FaceRock Tomb
Agatha
Elite Four
Even

Steelix trades roughly evenly with Agatha's team.

Even
Gengar
Lv 54
GhostPoison
LevitateImmune to Ground attacks
Shadow PunchConfuse RayToxicDouble Team
Even
Golbat
Lv 54
PoisonFlying
Inner Focus
Confuse RayPoison FangAir CutterBite
Even
Haunter
Lv 53
GhostPoison
LevitateImmune to Ground attacks
HypnosisDream EaterCurseMean Look
You Win
Arbok
Lv 56
Poison
Intimidate
Sludge BombScreechIron TailBite
Even
Gengar
Lv 58
GhostPoison
LevitateImmune to Ground attacks
Shadow BallSludge BombHypnosisNightmare
Lance
Elite Four
Even

Steelix trades roughly evenly with Lance's team.

Even
Gyarados
Lv 56
WaterFlying
Intimidate
Hyper BeamDragon RageTwisterBite
You Win
Dragonair
Lv 54
Dragon
Shed Skin
Hyper BeamSafeguardDragon RageOutrage
You Win
Dragonair
Lv 54
Dragon
Shed Skin
Hyper BeamSafeguardThunder WaveOutrage
You Win
Aerodactyl
Lv 58
RockFlying
Rock Head
Hyper BeamAncient PowerWing AttackScary Face
Risky
Dragonite
Lv 60
DragonFlying
Inner Focus
Hyper BeamSafeguardOutrageWing Attack
Terry
Champion
Even

Steelix trades roughly evenly with Terry's team.

Even
Heracross
Lv 72
BugFighting
Swarm
MegahornEarthquakeCounterRock Tomb
Even
Alakazam
Lv 73
Psychic
Synchronize
PsychicShadow BallCalm MindReflect
You Win
Tyranitar
Lv 72
RockDark
Sand Stream
CrunchEarthquakeThunderboltAerial Ace
Risky
Exeggutor
Lv 73
GrassPsychic
Chlorophyll
Giga DrainPsychicSleep PowderLight Screen
Risky
Gyarados
Lv 73
WaterFlying
Intimidate
Hydro PumpDragon DanceEarthquakeHyper Beam
Risky
Charizard
Lv 75
FireFlying
Blaze
Fire BlastDragon ClawAerial AceEarthquake
Catch Onix
Available after Badge 3
Type
RockGround
Tier
E

Catch Onix on Rock Tunnel (walking, Lv 13-15, rare).

View Onix locations

Recommended Moves
  • After Brock
    • TM39RockRock Tomb9095%15
  • After Lt. Surge
    • TM28GroundDig120100%10
  • After Erika
    • HM04NormalStrength80100%15
    • LV 45SteelIron Tail10075%15
  • After Giovanni
    • TM26GroundEarthquake150100%10
    • LV 56NormalDouble-Edge120100%15
  • Post-Game
    • TUTORNormalBody Slam85100%15
    • TM42NormalFacade70100%20
Evolve Onix to Steelix
Trade holding Metal Coat
Type
SteelGround
Tier
A

Most players are ready to trade before reaching Erika.

Recommended Moves
  • After Lt. Surge
    • TM28GroundDig120100%10
  • After Erika
    • TM15NormalHyper Beam15090%5
    • HM04NormalStrength80100%15
    • LV 45SteelIron Tail15075%15
  • After Giovanni
    • TM26GroundEarthquake150100%10
    • LV 52DarkCrunch80100%15
    • LV 56NormalDouble-Edge120100%15
  • Post-Game
    • TUTORNormalBody Slam85100%15
    • TM42NormalFacade70100%20

How to Get Steelix in FireRed & LeafGreen

Steelix requires a Metal Coat trade. Catch an Onix in Rock Tunnel, attach a Metal Coat (rare held item from wild Magnemite or route hidden spots), then trade to another player for the evolution. On original GBA cartridges the trade uses a Link Cable or the Wireless Adapter. On the 2026 Nintendo Switch re-release, two Switch consoles trade over Switch local wireless — no accessory required.

Wild Steelix may be holding when caught:

Metal Coat (5% chance) An item to be held by a Pokemon. A special metallic film that boosts the power of STEEL-type moves.

Catch Onix at any of these 3 spots to eventually evolve into Steelix.

Encountered via tall grass encounters

  1. 1
    Catch Onix
  2. 2
    Evolve Steelixby trading
Badge 3
Badge 4
Badge 5
Badge 6
Badge 7
Badge 8
Post-Game

How to Obtain Steelix in FRLG

Onix is your first catch on the way to Steelix. You'll find walking encounters from Lv. 13-54 across 12 total spots in the chain.

  1. Steelix
    Step 2Steelix

Steelix Weakness

Steelix is weak to Fire, Water, Fighting, and Ground. On the flip side, it's immune to Electric and Poison-type moves entirely. With 9 resistances, the defensive profile is strong. Steelix's physical bulk (base 200 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.

Steelix Weakness and Resistance Chart
DamageTypes
2x (Weak)Fire, Water, Fighting, Ground
0.5x (Resist)Normal, Flying, Psychic, Bug, Ghost, Dragon, Dark, Steel
0.25x (Resist)Rock
0x (Immune)Electric, Poison
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

What is Steelix Weak Against

Excellent
4Weak
9Resist
2Immune
Score+8

What is Steelix Strong Against

6Strong
0Resisted
0Immune
Score+6
½xResisted
None
0xImmune
None

Best Pokemon Against Steelix

Steelix Evolutions

Getting Steelix requires a trade, not just grinding levels. The chain starts at Onix. Breed this form to get Onix eggs (average hatch time). HP grew the most through evolution (+40 over Onix), and Steelix peaks at 510 total stats. View every chain in the Evolution Chart.

How to Evolve

2 Forms
Onix
#095Onix
Trade + Metal Coat
Trade + Metal Coat
Steelix
#208Steelix
Stat Comparison 2 Stages
Onix
RockGround
Steelix
SteelGround
HP
35
75+40
ATK
45
85+40
DEF
160
200+40
SP.ATK
30
55+25
SP.DEF
45
65+20
SPE
70
30-40
BST
385C-Tier
510B-Tier+125
ROLE
Balanced
Trick Room
TYPE
Utility
Physical

Breeding

Easy

Breed with Steelix to get Onix eggs easily using 23 partners from the Mineral egg group. Notable egg moves include Block, Explosion, Flail and 1 more.

Egg Groups
Gender
50.0%50.0%
Hatch Time
25 cycles·6,425 steps
Moderate~6 min with Flame Body
Egg Moves
4moves
Breed With (best first)
glaliesnoruntporygon2claydolgolemelectrodemagnetonsudowoodogravelerporygonnosepassmagnemite

FRLG Steelix Best Moveset

200 Defense is the highest physical tank stat in the format. Steel/Ground typing resists nine types. AbilityRock Head removes recoil from MoveDouble-Edge. The moveset blocks physical attacks absolutely and fires MoveEarthquake for Ground TermStab at 85 Attack, modest but backed by the bulk to use it repeatedly.

Best Build

Experimental
Wall
Ability
Rock Head
Item
LeftoversSUSTAIN
Best Nature for Steelix
Impish+DEF

Steelix best EVs are HP and Sp. Def

EVs

Wall Moveset

  • EarthquakeSTAB
  • RoarSLOW -6Utility
  • ExplosionCoverage
  • ToxicUtility

Moves List

Breeding opens up real options for Steelix. Block and Explosion come exclusively from egg moves, and they're worth the effort. The rest of the kit covers basics through Iron Tail and Earthquake and Normal and Rock coverage and more.

Level-Up Moves

Lv 1
Screech
D8540Normal
Lv 1
Tackle
D3510035Normal
Lv 8
Bind
157520Normal
Lv 12
Rock Throw
509015Rock
Lv 19
Harden
C30Normal
Lv 23
Rage
2010020Normal
Lv 30
Dragon Breath
D6010020Dragon
Lv 34
Sandstorm
D10Rock
Lv 41
Slam
807520Normal
Lv 45
Iron Tail
C1507515Steel
Lv 52
Crunch
C8010015Dark
Lv 56
Double-Edge
C12010015Normal

TM Moves

TM
TM45
Attract
10015Normal
HM01
Cut
D509530Normal
TM28
Dig
C9010010Ground
TM32
Double Team
15Normal
TM26
Earthquake
B15010010Ground
TM42
Facade
D7010020Normal
TM21
Frustration
D10020Normal
TM10
Hidden Power
6010015Normal
TM15
Hyper Beam
C150905Normal
TM23
Iron Tail
C1507515Steel
TM17
Protect+4
C10Normal
TM44
Rest
C10Psychic
TM27
Return
D10020Normal
TM05
Roar-6
B20Normal
HM06
Rock Smash
D2010015Fighting
TM39
Rock Tomb
D609510Rock
TM37
Sandstorm
D10Rock
TM43
Secret Power
7010020Normal
HM04
Strength
8010015Normal
TM11
Sunny Day
C5Fire
TM12
Taunt
C10020Dark
TM41
Torment
D10015Dark
TM06
Toxic
A8510Poison

Egg Moves

Egg
Egg
Block
5Normal
Egg
Explosion
B2501005Normal
Egg
Flail
D10015Normal
Egg
Rock Slide
A759010Rock

Tutor Moves

Tut
Tutor
Body Slam
C8510015Normal
Tutor
Double-Edge
C12010015Normal
Tutor
Explosion
B2501005Normal
Tutor
Mimic
D10Normal
Tutor
Rock Slide
A759010Rock
Tutor
Substitute
C10Normal

Reminder Moves

Rem
Rem
Sand Tomb
528515Ground

Base Stats

Base Stats
High
HP75
C
Attack85
C
Defense200
S
Sp. Atk55
D
Sp. Def65
C
Speed30
F
Total510
Details
Catch Rate
Difficult25 / 255
Growth Rate
Medium Fast1M XP
Height9.2 m
Weight400.0 kg
Base XP179
Abilities
Rock Head
Protects against recoil damage.
Sturdy
Prevents being KOed from full HP, leaving 1 HP instead. Protects against the one-hit KO moves regardless of HP.
EV Yield
HPAtkDef+2SpASpDSpe
Defense training target
Pokedex Entry

It is said that if an ONIX lives for over 100 years, its composition changes to become diamond-like.

Its body has been compressed deep under the ground. As a result, it is even harder than diamond.

Steelix FireRed & LeafGreen Guide

  • Steelix is obtained by trade-evolving Onix. Catch or evolve a Onix first, then trade. Trade needs a Game Boy Advance link cable and a second GBA running another Gen 3 game (FireRed, LeafGreen, Ruby, Sapphire, or Emerald). Trade Onix to a friend, then have them trade it back. The 2026 Switch re-release supports the same trade through local wireless on the Pokemon Center 2F Wireless Club, with no cables required. The Metal Coat must be held during the trade. In FireRed and LeafGreen, Metal Coat is post-game only. Pick it up as a hidden item near Memorial Pillar in the Sevii Islands or win it as a prize for clearing Knockout Mode in Trainer Tower on Seven Island. Both spots unlock after entering the Hall of Fame and getting the Rainbow Pass from Celio on One Island. You can also bring one over from Ruby, Sapphire, or Emerald.

Game Availability

Since debuting in Gold & Silver, Steelix has appeared in 18 titles over 9 generations. Along the way, it received a Mega form in Generation 6, keeping it relevant across different competitive metas.

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