Stats & Training
The stat bars tell the story: Defense carries everything and Sp. Atk's dead weight. But this Rock Snake Pokemon still yields 1 Defense EV per fight on a medium-fast 1M XP curve.
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
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)
 Tirtouga WaterRock | C | |
Obtain MethodNacrene City Gift Available Moves Moves
Damage vs Onix View Tirtouga builds →Water Gun 4x102-120%KO Aqua Jet 4x60-72% | ||
 Snivy Grass | D | |
Obtain MethodNuvema Town Gift Available Moves Moves
Damage vs Onix View Snivy builds →Leaf Tornado 4x152-180%KO Vine Whip 4x50-60% | ||
 Pansage Grass | D | |
Obtain MethodDreamyard Gift Available Moves Moves
Damage vs Onix View Pansage builds →Low Sweep 2x22-28% Vine Whip 4x50-60% | ||
 Oshawott Water | D | |
Obtain MethodNuvema Town Gift Available Moves Moves
Damage vs Onix View Oshawott builds →Razor Shell 4x80-96% Water Gun 4x112-132%KO | ||
 Omanyte RockWater | D | |
Obtain MethodNacrene City Gift | ||
 Virizion GrassFighting | C | |
Obtain MethodPinwheel Forest Interact Encounter Available Moves Moves
Damage vs Onix View Virizion builds →Focus Blast 2x204-241%KO Solar Beam 4x409-482%KO Magical Leaf 4x209-246%KO Rock Smash 2x30-38% | ||
 Whimsicott Grass | C | |
Available Moves Moves
Damage vs Onix View Whimsicott builds →Solar Beam 4x364-429%KO Mega Drain 4x127-150%KO | ||
 Lilligant Grass | C | |
Available Moves Moves
Damage vs Onix View Lilligant builds →Solar Beam 4x482-568%KO Mega Drain 4x171-204%KO | ||
 Swadloon BugGrass | D | |
Available Moves Moves
Damage vs Onix View Swadloon builds →Solar Beam 4x273-321%KO Razor Leaf 4x63-75% | ||
 Lileep RockGrass | D | |
Obtain MethodNacrene City Gift | ||
Virizion GrassFighting | C | |
Obtain MethodPinwheel Forest Interact Encounter Available Moves Moves
Damage vs Onix View Virizion builds →Focus Blast 2x194-230%KO Solar Beam 4x389-459%KO Magical Leaf 4x198-234%KO Rock Smash 2x27-33% | ||
Whimsicott Grass | C | |
Available Moves Moves
Damage vs Onix View Whimsicott builds →Solar Beam 4x350-413%KO Mega Drain 4x127-150%KO | ||
Lilligant Grass | C | |
Available Moves Moves
Damage vs Onix View Lilligant builds →Solar Beam 4x461-544%KO Mega Drain 4x159-188%KO | ||
 Maractus Grass | C | |
Available Moves Moves
Damage vs Onix View Maractus builds →Solar Beam 4x445-525%KO Giga Drain 4x286-338%KO Needle Arm 4x80-94% Mega Drain 4x159-188%KO | ||
Swadloon BugGrass | D | |
Available Moves Moves
Damage vs Onix View Swadloon builds →Solar Beam 4x263-309%KO Razor Leaf 4x63-75% | ||
Virizion GrassFighting | C | |
Obtain MethodPinwheel Forest Interact Encounter Available Moves Moves
Damage vs Onix View Virizion builds →Focus Blast 2x204-242%KO Solar Beam 4x410-483%KO Magical Leaf 4x213-250%KO Rock Smash 2x28-33% | ||
Whimsicott Grass | C | |
Available Moves Moves
Damage vs Onix View Whimsicott builds →Solar Beam 4x361-425%KO Mega Drain 4x126-150%KO | ||
Lilligant Grass | C | |
Available Moves Moves
Damage vs Onix View Lilligant builds →Solar Beam 4x474-558%KO Mega Drain 4x163-192%KO | ||
Maractus Grass | C | |
Available Moves Moves
Damage vs Onix View Maractus builds →Solar Beam 4x467-550%KO Giga Drain 4x297-350%KO Needle Arm 4x78-92% Mega Drain 4x163-192%KO | ||
Swadloon BugGrass | D | |
Available Moves Moves
Damage vs Onix View Swadloon builds →Solar Beam 4x268-317%KO Razor Leaf 4x63-75% | ||
Virizion GrassFighting | C | |
Obtain MethodPinwheel Forest Interact Encounter Available Moves Moves
Damage vs Onix View Virizion builds →Focus Blast 2x206-244%KO Solar Beam 4x414-488%KO Magical Leaf 4x210-248%KO Rock Smash 2x28-34% | ||
 Ferroseed GrassSteel | C | |
Available Moves Moves
Damage vs Onix View Ferroseed builds →Solar Beam 4x178-210%KO Mirror Shot 2x50-60% Metal Claw 2x25-30% Rock Smash 2x14-18% | ||
 Leavanny BugGrass | C | |
Available Moves Moves
Damage vs Onix View Leavanny builds →Solar Beam 4x344-405%KO Razor Leaf 4x89-105%KO | ||
Whimsicott Grass | C | |
Available Moves Moves
Damage vs Onix View Whimsicott builds →Solar Beam 4x369-435%KO Mega Drain 4x128-150%KO | ||
Lilligant Grass | C | |
Available Moves Moves
Damage vs Onix View Lilligant builds →Solar Beam 4x490-578%KO Mega Drain 4x171-203%KO | ||
Virizion GrassFighting | C | |
Obtain MethodPinwheel Forest Interact Encounter Available Moves Moves
Damage vs Onix View Virizion builds →Focus Blast 2x202-239%KO Solar Beam 4x406-477%KO Giga Drain 4x255-300%KO Magical Leaf 4x208-245%KO | ||
Ferroseed GrassSteel | C | |
Available Moves Moves
Damage vs Onix View Ferroseed builds →Solar Beam 4x167-198%KO Flash Cannon 2x58-68% Mirror Shot 2x45-55% Metal Claw 2x23-27% | ||
Leavanny BugGrass | C | |
Available Moves Moves
Damage vs Onix View Leavanny builds →Solar Beam 4x330-389%KO Leaf Blade 4x133-157%KO Razor Leaf 4x81-95% | ||
Whimsicott Grass | C | |
Available Moves Moves
Damage vs Onix View Whimsicott builds →Solar Beam 4x359-423%KO Mega Drain 4x127-150%KO | ||
Lilligant Grass | C | |
Available Moves Moves
Damage vs Onix View Lilligant builds →Solar Beam 4x475-559%KO Mega Drain 4x161-191%KO | ||
Virizion GrassFighting | C | |
Obtain MethodPinwheel Forest Interact Encounter Available Moves Moves
Damage vs Onix View Virizion builds →Focus Blast 2x206-244%KO Solar Beam 4x414-488%KO Sacred Sword 2x58-69% Giga Drain 4x259-306%KO | ||
Ferroseed GrassSteel | C | |
Available Moves Moves
Damage vs Onix View Ferroseed builds →Solar Beam 4x170-200%KO Iron Head 2x34-41% Flash Cannon 2x58-69% Mirror Shot 2x47-56% | ||
Leavanny BugGrass | C | |
Available Moves Moves
Damage vs Onix View Leavanny builds →Solar Beam 4x340-400%KO Leaf Blade 4x132-156%KO Razor Leaf 4x84-100%KO | ||
Whimsicott Grass | C | |
Available Moves Moves
Damage vs Onix View Whimsicott builds →Solar Beam 4x366-431%KO Mega Drain 4x127-150%KO | ||
Lilligant Grass | C | |
Available Moves Moves
Damage vs Onix View Lilligant builds →Solar Beam 4x483-569%KO Mega Drain 4x165-194%KO | ||
In Black & White, Excadrill can KO Onix with Earthquake (107-127%). Politoed's Scald also KOs at 282-333%.
 Excadrill GroundSteel | A | |
Recommended Build AbilitySandforce ItemChoice Scarf NatureJolly Moves
Damage vs Onix View Excadrill builds →Earthquake 2x107-127%KO Rapid Spin9-10% Rock Slide13-16% | ||
 Jirachi SteelPsychic | A | |
Recommended Build AbilitySerenegrace ItemLeftovers NatureCareful Moves
Damage vs Onix View Jirachi builds →U Turn16-19% | ||
 Politoed Water | B | |
Recommended Build AbilityDrizzle ItemLeftovers NatureBold Moves
Damage vs Onix View Politoed builds →Scald 4x282-333%KO | ||
 Conkeldurr Fighting | B | |
Recommended Build AbilityGuts ItemLeftovers NatureAdamant Moves
Damage vs Onix View Conkeldurr builds →Drain Punch 2x91-107%KO Mach Punch 2x49-58% | ||
 Breloom GrassFighting | B | |
Recommended Build AbilityTechnician ItemLife Orb NatureAdamant Moves
Damage vs Onix View Breloom builds →Mach Punch 2x61-72% Bullet Seed 4x78-92% | ||
Black & White Evolution
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
Breeding
Breed Onix easily with 49 breeding partners from the Mineral egg group. Pass egg moves like Block, Defense Curl, Flail and 5 more to offspring.
Black & White Onix Best Moveset
Sturdy isn't flashy, but it matters. Combined with Custapberry for extra utility and max Attack and Speed EVs, Onix fills the hazard lead slot reliably. Jolly nature finishes the spread.
Best Build
Onix best EVs are Attack and Speed
Physical Stallbreaker Moveset
- Stealth Rock
- Taunt
- Dragon Tail
- Explosion
Recommended Teammates
Moves
The natural movepool does the job, but Block and Defense Curl from the egg pool give Onix something extra.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Transfer Moves
Black & White Onix Locations
Onix appears at decent spawn rates across 4 spots in endgame routes. Sort by Best below if you want the highest rate, or Earliest if you want the quickest access point in your playthrough.
Best Locations to Catch Onix in Black & White
Onix appears in 4 walking locations at Lv. 48-49 across Black and White. Not all encounters show up in every version, so check which ones match your game.
Onix Guide
At 385 BST, Onix is firmly in pre-evolution territory. Evolve it into Steelix before bringing it to any serious fight.
In Black & White, 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.
Rock Head protects against recoil damage. That's the one you want on Onix. Weak Armor is the hidden ability. Niche, but it has its uses. 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.
In Black & White, For a casual playthrough, Onix works as a placeholder. Rock/Ground coverage is useful early. The real payoff is Steelix. That's where the stats start mattering.
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 1Y
Yellow - Gen 1RBDebut
Red & Blue - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3FRLG
FireRed & LeafGreen - Gen 3E
Emerald - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 4DP
Diamond & Pearl - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7SM
Sun & Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8PLA
Legends: Arceus - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves