Is Onix Good in Platinum Playthrough?
Oreburgh Mine from level 6. AbilityRock Head removes recoil damage. Onix handles Roark and Volkner through Ground moves. Steelix through trade with Metal Coat is the real form, but Steel typing struggles against Flint's all-Fire E4 in Platinum.
Steelix has the type edge here and should clean up Roark's team.
Steelix has the type edge here and should clean up Gardenia's team.
Fantina's typing presses Steelix's defenses.
Steelix has the type edge here and should clean up Maylene's team.
Steelix trades roughly evenly with Crasher Wake's team.
Steelix resists most of Byron's coverage and hits back hard.
Steelix has the type edge here and should clean up Candice's team.
Steelix has the type edge here and should clean up Volkner's team.
Steelix has the type edge here and should clean up Aaron's team.
Steelix trades roughly evenly with Bertha's team.
Steelix trades roughly evenly with Flint's team.
Steelix trades roughly evenly with Lucian's team.
Steelix trades roughly evenly with Cynthia's team.
Catch Onix on Oreburgh Mine (walking, Lv 6-8, uncommon).
- LV 17RockRock Tomb9095%15
- After Gardenia
- TM26GroundEarthquake150100%10
- TM28GroundDig120100%10
- After Maylene
- TM64NormalExplosion250100%5
- TM06PoisonToxic—90%10
- After Byron
- TM80RockRock Slide11390%10
- LV 49NormalDouble-Edge120100%15
- LV 54RockStone Edge15080%5
How to Get Onix in Platinum
A trade step sits in Onix's 2-stage line from Onix. The step cards below map each stage with catch locations and evolution methods. Onix shows up in the wild, so the starting catch is the easy part.
Where To Catch Onix in Pt
The path to Onix starts with Onix at Lv. 6-50 via walking encounters. 2 catchable stages total, with locations listed for each one below.
Step 1Onix ✓Oreburgh Mine - 1FLv.6-8CaveRate 10%Oreburgh Mine - B1FLv.7-9CaveRate 10%Wayward Cave - 1FLv.18-20CaveRate 15%Wayward Cave - B1FLv.18-20CaveRate 15%Iron Island - B2F Left CaveLv.32GrassRate 20%Iron Island - B2F Right CaveLv.32GrassRate 20%Victory Road - 1FLv.41-42CaveRate 20%Iron Island - 1FLv.31-33GrassRate 10%Iron Island - B1F Left CaveLv.31-33GrassRate 10%Iron Island - B1F Right CaveLv.31-33GrassRate 10%Victory Road - B1FLv.42CaveRate 10%Victory Road - 2FLv.42CaveRate 5%Victory Road - Nat Dex AreaLv.48-50CaveRate 20%Victory Road - Nat Dex Exit AreaLv.48-50CaveRate 20%
Step 2Catch or Evolve into SteelixVictory Road - 2FLv.42-44CaveRate 40%Iron Island - B3FLv.32-35GrassRate 30%Iron Island - B2F Left CaveLv.33-35GrassRate 10%Iron Island - B2F Right CaveLv.33-35GrassRate 10%Victory Road - 1FLv.42CaveRate 5%Victory Road - B1FLv.44CaveRate 5%Victory Road - Nat Dex AreaLv.50CaveRate 5%Victory Road - Nat Dex Exit AreaLv.50CaveRate 5%or evolve from Onix (Step 1)
Onix Weakness
Onix's Rock/Ground typing leaves it vulnerable to Water, Grass, Ice, Fighting, Ground, and Steel. Water and Grass hits land at 4x, so they're the biggest threat. It shrugs off Electric-type attacks completely. The Rock/Ground typing picks up 5 resistances to work with. Onix's physical bulk (base 160 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
| Damage | Types |
|---|---|
| 4x (Critical) | Water, Grass |
| 2x (Weak) | Ice, Fighting, Ground, Steel |
| 0.5x (Resist) | Normal, Fire, Flying, Rock |
| 0.25x (Resist) | Poison |
| 0x (Immune) | Electric |
- Fairy type does not exist — Dragon has fewer checks
- Physical / Special split now per-move (introduced Gen IV)
What is Onix Weak Against
FragileBest Pokemon Against Onix
 Turtwig Grass | C | |
Obtain MethodRoute 201 Gift Available Moves Moves
Damage vs Onix View Turtwig builds →Razor Leaf 4x66-79% Rock Smash 2x16-21% | ||
 Geodude RockGround | C | |
 Psyduck Water | D | |
Obtain MethodCelestic Town Surfing Available Moves Moves
Damage vs Onix View Psyduck builds →Water Gun 4x118-142%KO Focus Punch 2x45-53% | ||
 Piplup Water | C | |
Obtain MethodRoute 201 Gift Available Moves Moves
Damage vs Onix View Piplup builds →Brick Break 2x26-32% Bubble 4x66-79% | ||
 Heracross BugFighting | B | |
 Monferno FireFighting | C | |
Obtain MethodEvolve Chimchar (Route 201 Gift) | ||
 Grotle Grass | C | |
Obtain MethodEvolve Turtwig (Route 201 Gift) Available Moves Moves
Damage vs Onix View Grotle builds →Razor Leaf 4x80-96% Rock Smash 2x20-24% | ||
 Prinplup Water | C | |
Obtain MethodEvolve Piplup (Route 201 Gift) Available Moves Moves
Damage vs Onix View Prinplup builds →Bubble Beam 4x214-252%KO Brick Break 2x30-36% Metal Claw 2x20-24% | ||
 Bibarel NormalWater | C | |
Available Moves Moves
Damage vs Onix View Bibarel builds →Focus Punch 2x68-80% Water Pulse 4x152-180%KO | ||
Heracross BugFighting | B | |
Available Moves Moves
Damage vs Onix View Heracross builds →Focus Punch 2x127-150%KO Earthquake 2x56-68% | ||
 Gallade PsychicFighting | B | |
Available Moves Moves
Damage vs Onix View Gallade builds →Focus Punch 2x127-150%KO Leaf Blade 4x103-123%KO Earthquake 2x56-68% | ||
 Machoke Fighting | C | |
Available Moves Moves
Damage vs Onix View Machoke builds →Focus Punch 2x106-126%KO Earthquake 2x48-58% | ||
 Cherrim Grass | C | |
 Gliscor Ground | B | |
Available Moves Moves
Damage vs Onix View Gliscor builds →Earthquake 2x69-82% Brick Break 2x35-42% Steel Wing 2x32-39% Ice Fang 2x32-39% | ||
 Roserade GrassPoison | B | |
 Shiftry GrassDark | C | |
Available Moves Moves
Damage vs Onix View Shiftry builds →Solar Beam 4x414-489%KO Focus Blast 2x137-163%KO | ||
 Ludicolo WaterGrass | C | |
Available Moves Moves
Damage vs Onix View Ludicolo builds →Solar Beam 4x414-489%KO Water Pulse 4x210-249%KO Focus Punch 2x56-66% Ice Beam 2x111-131%KO | ||
Cherrim Grass | C | |
Heracross BugFighting | B | |
Available Moves Moves
Damage vs Onix View Heracross builds →Focus Punch 2x127-150%KO Earthquake 2x57-69% | ||
Roserade GrassPoison | B | |
Shiftry GrassDark | C | |
Available Moves Moves
Damage vs Onix View Shiftry builds →Solar Beam 4x414-489%KO Dig 2x40-49% Focus Blast 2x137-163%KO | ||
Ludicolo WaterGrass | C | |
Available Moves Moves
Damage vs Onix View Ludicolo builds →Solar Beam 4x414-489%KO Water Pulse 4x210-249%KO Focus Punch 2x56-66% Ice Beam 2x111-131%KO | ||
Cherrim Grass | C | |
Heracross BugFighting | B | |
Available Moves Moves
Damage vs Onix View Heracross builds →Focus Punch 2x127-150%KO Earthquake 2x57-69% | ||
 Torterra GrassGround | C | |
Obtain MethodEvolve Turtwig (Route 201 Gift) Available Moves Moves
Damage vs Onix View Torterra builds →Wood Hammer 4x180-211%KO Earthquake 2x75-89% Rock Smash 2x20-25% | ||
Roserade GrassPoison | B | |
Shiftry GrassDark | C | |
Available Moves Moves
Damage vs Onix View Shiftry builds →Solar Beam 4x406-477%KO Dig 2x39-45% Focus Blast 2x135-159%KO | ||
Ludicolo WaterGrass | C | |
Available Moves Moves
Damage vs Onix View Ludicolo builds →Solar Beam 4x406-477%KO Surf 4x324-382%KO Focus Punch 2x51-61% Ice Beam 2x108-127%KO | ||
 Abomasnow GrassIce | C | |
Available Moves Moves
Damage vs Onix View Abomasnow builds →Wood Hammer 4x156-184%KO Focus Punch 2x64-75% Ice Beam 2x161-191%KO Water Pulse 4x139-164%KO | ||
Torterra GrassGround | C | |
Obtain MethodEvolve Turtwig (Route 201 Gift) Available Moves Moves
Damage vs Onix View Torterra builds →Wood Hammer 4x173-204%KO Earthquake 2x72-86% Iron Tail 2x48-57% Rock Smash 2x21-26% | ||
Roserade GrassPoison | B | |
Shiftry GrassDark | C | |
Available Moves Moves
Damage vs Onix View Shiftry builds →Solar Beam 4x406-479%KO Dig 2x37-45% Focus Blast 2x135-160%KO | ||
Ludicolo WaterGrass | C | |
Available Moves Moves
Damage vs Onix View Ludicolo builds →Solar Beam 4x406-479%KO Surf 4x319-377%KO Focus Punch 2x52-62% Ice Beam 2x106-126%KO | ||
Abomasnow GrassIce | C | |
Available Moves Moves
Damage vs Onix View Abomasnow builds →Wood Hammer 4x156-185%KO Focus Punch 2x63-74% Ice Beam 2x165-195%KO Water Pulse 4x140-166%KO | ||
Torterra GrassGround | C | |
Obtain MethodEvolve Turtwig (Route 201 Gift) Available Moves Moves
Damage vs Onix View Torterra builds →Wood Hammer 4x180-213%KO Earthquake 2x76-90% Iron Tail 2x51-60% Rock Smash 2x21-25% | ||
Roserade GrassPoison | B | |
Shiftry GrassDark | C | |
Available Moves Moves
Damage vs Onix View Shiftry builds →Leaf Storm 4x491-578%KO Dig 2x38-45% Focus Blast 2x140-165%KO | ||
Ludicolo WaterGrass | C | |
Available Moves Moves
Damage vs Onix View Ludicolo builds →Solar Beam 4x422-496%KO Surf 4x334-393%KO Focus Punch 2x54-64% Ice Beam 2x111-131%KO | ||
Abomasnow GrassIce | C | |
Available Moves Moves
Damage vs Onix View Abomasnow builds →Wood Hammer 4x157-185%KO Focus Punch 2x66-78% Ice Beam 2x171-202%KO Water Pulse 4x145-171%KO | ||
Torterra GrassGround | C | |
Obtain MethodEvolve Turtwig (Route 201 Gift) Available Moves Moves
Damage vs Onix View Torterra builds →Wood Hammer 4x180-212%KO Earthquake 2x75-88% Iron Tail 2x49-59% Rock Smash 2x21-25% | ||
 Exeggutor GrassPsychic | C | |
 Palkia WaterDragon | S | |
Obtain MethodSpear Pillar Interact Encounter Available Moves Moves
Damage vs Onix View Palkia builds →Surf 4x520-612%KO Focus Punch 2x80-95% Ice Beam 2x173-204%KO Earth Power 2x164-193%KO | ||
 Tangrowth Grass | C | |
Available Moves Moves
Damage vs Onix View Tangrowth builds →Solar Beam 4x499-588%KO Earthquake 2x46-55% Focus Blast 2x166-196%KO | ||
Roserade GrassPoison | B | |
In Platinum, Gyarados can KO Onix with Waterfall (179-210%).
 Gyarados Water | S | |
Recommended Build AbilityIntimidate ItemLeftovers NatureAdamant Moves
Damage vs Onix View Gyarados builds →Waterfall 4x179-210%KO Earthquake 2x74-87% Ice Fang 2x48-57% | ||
Onix Evolutions
To get Steelix from Onix, you need a trade. The evolution method matters here. The evolved forms gain up to 125 total stats over Onix. View every chain in the Evolution Chart.
How to Evolve
Pt Onix Best Moveset
Rock/Ground typing blockss Electric attacks entirely and resists Normal and Poison, but 35 HP undermines the 160 Defense completely. The moveset barely threatens at 45 Attack. Steelix through trade is the real destination.
Best Build
Onix best EVs are Attack and Speed
Support Moveset
- Stealth Rock
- Earthquake
- Explosion
- Toxic
Recommended Teammates
Moves List
The natural movepool does the job, but Block and Defense Curl from the egg pool give Onix something extra.
How to Read the Moves Table
Tabs
- Level-Up
- Learned by leveling up.
- TM
- Taught by a Technical Machine.
- Egg
- Inherited via breeding.
- Tutor
- NPC tutor (cost: items, BP, money).
- Reminder
- An NPC reteaches any move this Pokemon could have learned by leveling up.
- Transfer
- Carried over from an older game using Pokemon HOME.
- Event
- Given out through Mystery Gift events.
Visual Signals
CAT (Category)
How the move deals damage and which stats it uses.
A small dot on the icon's corner marks the move as contact. That triggers abilities like Static, Flame Body, Rough Skin, or Iron Barbs, plus items like Rocky Helmet and Sticky Barb.
Tier (S to D)
Each move's competitive rank in RankedBoost's system. TM, Egg, and Tutor sort by tier by default (best first). On Level-Up, click the Tier header to do the same.
PWR (Power)
Base damage. Numbers shown in a type color include STAB (base × 1.5). Hover any colored number to see the math.
— means no power (status moves) or variable power.
Sorting & Filter
Click any column header to sort. Level-Up opens with Lv 1 at the top. TM, Egg, and Tutor open with the highest-tier moves at the top.
Search filters by move name or type. The Filter button limits the list to STAB, Physical, Special, or Status moves.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Base Stats
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
Onix Platinum Guide
At 385 BST, Onix is firmly in pre-evolution territory. Evolve it into Steelix before bringing it to any serious fight.
In Platinum, watch for Starmie (Water), Exeggutor (Grass), and Cloyster (Ice) when using Onix. They all hit it super-effectively with STAB. Starmie is the most dangerous since Water moves deal 4x damage. Fighting, Ground, and Steel-type attackers are also a problem. With 6 weakness types, most competitive teams carry at least one counter.
No. Onix only evolves into Steelix through a real trade. There is no in-game alternative in Platinum. 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. Bring one over from a sibling Gen 3 game if needed.
Rock Head protects against recoil damage. That's the one you want on Onix. Sturdy works too if your team needs something different.
Onix is a physical attacker with base 45 Attack. Enough bulk to take a hit or two, too. Speed tells the real story. Base 70 Speed is workable. Faster than some, slower than many.
Game Availability
Present since Red & Blue, Onix appears in 21 games spanning 10 generations. Gen 1 originals like Onix have the longest track record of availability in the series.
Click a game to view version-specific details
- Gen 1RBDebut
Red & Blue - Gen 1Y
Yellow - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG
FireRed & LeafGreen - Gen 4DP
Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7SM
Sun & Moon - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves