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.
Onix has a magnet in its brain. It acts as a compass so that this Pokémon does not lose direction while it is tunneling. As it grows older, its body becomes increasingly rounder and smoother.
Onix has a magnet in its brain. It acts as a compass so that this Pokémon does not lose direction while it is tunneling. As it grows older, its body becomes increasingly rounder and smoother.
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 |
 Chikorita Grass | D | |
Obtain MethodRoute 101 Gift | ||
 Turtwig Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Turtwig builds →Razor Leaf 4x66-79% Absorb 4x53-63% | ||
 Treecko Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Treecko builds →Mega Drain 4x118-142%KO Absorb 4x66-79% | ||
 Snivy Grass | D | |
Obtain MethodRoute 101 Gift | ||
 Shroomish Grass | D | |
Available Moves Moves
Damage vs Onix View Shroomish builds →Mega Drain 4x92-111%KO Absorb 4x53-63% | ||
Chikorita Grass | D | |
Obtain MethodRoute 101 Gift | ||
Turtwig Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Turtwig builds →Razor Leaf 4x71-86% Absorb 4x60-71% | ||
Treecko Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Treecko builds →Mega Drain 4x121-143%KO Absorb 4x71-86% | ||
 Sewaddle BugGrass | D | |
Snivy Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Snivy builds →Leaf Tornado 4x145-171%KO Vine Whip 4x48-57% | ||
Chikorita Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Chikorita builds →Magical Leaf 4x131-155%KO Razor Leaf 4x52-62% | ||
Turtwig Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Turtwig builds →Razor Leaf 4x69-83% Absorb 4x52-62% | ||
Treecko Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Treecko builds →Giga Drain 4x193-228%KO Mega Drain 4x114-134%KO Absorb 4x60-72% | ||
Sewaddle BugGrass | D | |
Snivy Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Snivy builds →Leaf Tornado 4x140-166%KO Vine Whip 4x43-52% Mega Drain 4x88-103%KO | ||
 Lileep RockGrass | D | |
Obtain MethodRustboro City Gift Available Moves Moves
Damage vs Onix View Lileep builds →Giga Drain 4x187-221%KO Brine 4x109-129%KO | ||
 Lombre WaterGrass | D | |
Available Moves Moves
Damage vs Onix View Lombre builds →Surf 4x225-265%KO Bubble Beam 4x165-194%KO Bubble 4x104-124%KO Rock Smash 2x15-18% | ||
 Nuzleaf GrassDark | D | |
Available Moves Moves
Damage vs Onix View Nuzleaf builds →Leaf Blade 4x97-115%KO Dig 2x29-35% Low Sweep 2x25-29% Razor Leaf 4x66-79% | ||
 Cacnea Grass | D | |
Available Moves Moves
Damage vs Onix View Cacnea builds →Needle Arm 4x82-97% Power-Up Punch 2x19-24% Absorb 4x75-88% | ||
Chikorita Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Chikorita builds →Magical Leaf 4x134-159%KO Razor Leaf 4x51-62% | ||
Lileep RockGrass | D | |
Obtain MethodRustboro City Gift Available Moves Moves
Damage vs Onix View Lileep builds →Giga Drain 4x197-233%KO Brine 4x113-133%KO | ||
Lombre WaterGrass | D | |
Available Moves Moves
Damage vs Onix View Lombre builds →Surf 4x226-267%KO Bubble Beam 4x169-200%KO Bubble 4x106-125%KO Rock Smash 2x14-17% | ||
Nuzleaf GrassDark | D | |
Available Moves Moves
Damage vs Onix View Nuzleaf builds →Leaf Blade 4x99-117%KO Dig 2x31-36% Low Sweep 2x25-31% Razor Leaf 4x63-75% | ||
Cacnea Grass | D | |
Available Moves Moves
Damage vs Onix View Cacnea builds →Needle Arm 4x78-92% Power-Up Punch 2x18-22% Absorb 4x71-83% | ||
Chikorita Grass | D | |
Obtain MethodRoute 101 Gift Available Moves Moves
Damage vs Onix View Chikorita builds →Magical Leaf 4x133-158%KO Razor Leaf 4x49-58% | ||
 Pelipper Water | C | |
Obtain MethodDewford Town Surfing Available Moves Moves
Damage vs Onix View Pelipper builds →Surf 4x328-387%KO Steel Wing 2x22-26% Brine 4x241-284%KO Water Pulse 4x221-261%KO | ||
Lileep RockGrass | D | |
Obtain MethodRustboro City Gift Available Moves Moves
Damage vs Onix View Lileep builds →Giga Drain 4x201-237%KO Brine 4x116-137%KO | ||
Lombre WaterGrass | D | |
Available Moves Moves
Damage vs Onix View Lombre builds →Surf 4x234-276%KO Bubble Beam 4x167-197%KO Bubble 4x107-126%KO Rock Smash 2x13-16% | ||
Nuzleaf GrassDark | D | |
Available Moves Moves
Damage vs Onix View Nuzleaf builds →Leaf Blade 4x100-118%KO Dig 2x30-37% Low Sweep 2x24-29% Razor Leaf 4x67-79% | ||
Cacnea Grass | D | |
Available Moves Moves
Damage vs Onix View Cacnea builds →Needle Arm 4x80-95% Power-Up Punch 2x20-24% Absorb 4x74-87% | ||
 Tropius Grass | C | |
Available Moves Moves
Damage vs Onix View Tropius builds →Solar Beam 4x351-414%KO Energy Ball 4x265-312%KO Steel Wing 2x25-30% Leaf Tornado 4x193-228%KO | ||
Lileep RockGrass | D | |
Obtain MethodRustboro City Gift Available Moves Moves
Damage vs Onix View Lileep builds →Solar Beam 4x311-366%KO Energy Ball 4x234-276%KO Giga Drain 4x198-234%KO Brine 4x115-136%KO | ||
Lombre WaterGrass | D | |
Available Moves Moves
Damage vs Onix View Lombre builds →Solar Beam 4x306-360%KO Hydro Pump 4x280-330%KO Blizzard 2x93-110%KO Surf 4x229-270%KO | ||
Nuzleaf GrassDark | D | |
Available Moves Moves
Damage vs Onix View Nuzleaf builds →Solar Beam 4x306-360%KO Leaf Blade 4x102-120%KO Energy Ball 4x229-270%KO Dig 2x30-36% | ||
Cacnea Grass | D | |
Available Moves Moves
Damage vs Onix View Cacnea builds →Solar Beam 4x402-474%KO Energy Ball 4x300-354%KO Needle Arm 4x81-96% Power-Up Punch 2x18-22% | ||
Tropius Grass | C | |
Available Moves Moves
Damage vs Onix View Tropius builds →Solar Beam 4x350-412%KO Earthquake 2x34-41% Energy Ball 4x265-312%KO Steel Wing 2x25-29% | ||
Lileep RockGrass | D | |
Obtain MethodRustboro City Gift Available Moves Moves
Damage vs Onix View Lileep builds →Solar Beam 4x310-365%KO Energy Ball 4x234-276%KO Giga Drain 4x194-229%KO Brine 4x113-133%KO | ||
Lombre WaterGrass | D | |
Available Moves Moves
Damage vs Onix View Lombre builds →Solar Beam 4x305-359%KO Hydro Pump 4x279-329%KO Blizzard 2x93-110%KO Surf 4x229-271%KO | ||
Nuzleaf GrassDark | D | |
Available Moves Moves
Damage vs Onix View Nuzleaf builds →Solar Beam 4x305-359%KO Leaf Blade 4x100-118%KO Energy Ball 4x229-271%KO Dig 2x29-35% | ||
Cacnea Grass | D | |
Available Moves Moves
Damage vs Onix View Cacnea builds →Solar Beam 4x394-465%KO Energy Ball 4x300-353%KO Brick Break 2x31-37% Needle Arm 4x79-94% | ||
In Omega Ruby & Alpha Sapphire, Serperior can KO Onix with Leaf Storm (498-586%). Garchomp threatens a KO with Earthquake (104-122%). Weavile deals 59-70% with Ice Shard.
 Serperior Grass | A | |
Recommended Build AbilityContrary ItemLeftovers NatureTimid Moves
Damage vs Onix View Serperior builds →Leaf Storm 4x498-586%KO | ||
 Garchomp DragonGround | A | |
Recommended Build AbilityRough Skin ItemRocky Helmet NatureJolly Moves
Damage vs Onix View Garchomp builds →Earthquake 2x104-122%KO | ||
 Weavile DarkIce | A | |
Recommended Build AbilityPressure ItemChoice Band NatureJolly Moves
Damage vs Onix View Weavile builds →Knock Off47-56% Ice Shard 2x59-70% Pursuit29-35% | ||
 Heatran FireSteel | A | |
Recommended Build AbilityFlashfire ItemLeftovers NatureCalm Moves View Heatran builds →
| ||
 Hitmontop Fighting | B | |
Recommended Build AbilityIntimidate ItemEjectbutton NatureAdamant Moves
Damage vs Onix View Hitmontop builds →Close Combat 2x110-129%KO Feint5-6% | ||
Omega Ruby & Alpha Sapphire 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 56 breeding partners from the Mineral egg group. Pass egg moves like Block, Defense Curl, Flail and 6 more to offspring.
Omega Ruby & Alpha Sapphire Onix Best Moveset
Best Build
No build content available for this Pokemon in Gen 6.
Try selecting a different game/generation filter, or check back later.
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
Omega Ruby & Alpha Sapphire Onix Locations
Onix appears at decent spawn rates across 10 spots in early-game 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 Omega Ruby & Alpha Sapphire
Onix appears in 10 walking locations at Lv. 12-38 across Alpha Sapphire and Omega Ruby. 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 Omega Ruby & Alpha Sapphire, 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 leaning toward the physical side (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 Omega Ruby & Alpha Sapphire, 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