Stats & Training
The stat bars tell the story: Defense carries everything and Special's dead weight. But this Rock Snake Pokemon still yields 1 Defense stat exp per fight on a medium-fast 1M XP curve.
As it grows, the stone portions of its body harden to become similar to a diamond, but colored black.
As it grows, the stone portions of its body harden to become similar to a diamond, but colored black.
Onix Weakness
Onix's Rock/Ground typing leaves it vulnerable to Water, Grass, Ice, Fighting, and Ground. 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 |
| 0.5x (Resist) | Normal, Fire, Flying, Rock |
| 0.25x (Resist) | Poison |
| 0x (Immune) | Electric |
- Only 15 types exist — Dark, Steel, and Fairy are absent
- Ghost has no effect on Psychic (a known bug, fixed in Gen II)
- Special stat governs both offense and defense — no Sp.Atk / Sp.Def split
 Oddish GrassPoison | D | |
 Bulbasaur GrassPoison | D | |
Obtain MethodPallet Town Gift | ||
 Bellsprout GrassPoison | D | |
 Paras BugGrass | D | |
 Squirtle Water | D | |
Obtain MethodPallet Town Gift Available Moves Moves
Damage vs Onix View Squirtle builds →Dig 2x26-33% Bubble Beam 4x181-214%KO Bubble 4x121-143%KO Water Gun 4x121-143%KO | ||
Oddish GrassPoison | D | |
Bulbasaur GrassPoison | D | |
Obtain MethodPallet Town Gift | ||
Bellsprout GrassPoison | D | |
Paras BugGrass | D | |
Squirtle Water | D | |
Obtain MethodPallet Town Gift Available Moves Moves
Damage vs Onix View Squirtle builds →Dig 2x26-33% Bubble Beam 4x181-214%KO Bubble 4x121-143%KO Water Gun 4x121-143%KO | ||
Oddish GrassPoison | D | |
Available Moves Moves
Damage vs Onix View Oddish builds →Mega Drain 4x157-185%KO Absorb 4x82-97% | ||
Bulbasaur GrassPoison | D | |
Obtain MethodPallet Town Gift Available Moves Moves
Damage vs Onix View Bulbasaur builds →Razor Leaf 4x187-221%KO Vine Whip 4x157-185%KO Mega Drain 4x141-168%KO | ||
Bellsprout GrassPoison | D | |
Available Moves Moves
Damage vs Onix View Bellsprout builds →Vine Whip 4x165-194%KO Mega Drain 4x150-176%KO | ||
Paras BugGrass | D | |
Available Moves Moves
Damage vs Onix View Paras builds →Dig 2x29-35% Mega Drain 4x112-132%KO | ||
Squirtle Water | D | |
Obtain MethodPallet Town Gift Available Moves Moves
Damage vs Onix View Squirtle builds →Ice Beam 2x82-97% Dig 2x25-29% Submission 2x25-29% Bubble Beam 4x179-212%KO | ||
 Lapras WaterIce | B | |
Obtain MethodSilph Co Gift Available Moves Moves
Damage vs Onix View Lapras builds →Ice Beam 2x188-221%KO Bubble Beam 4x268-317%KO Water Gun 4x169-200%KO | ||
Oddish GrassPoison | D | |
Available Moves Moves
Damage vs Onix View Oddish builds →Mega Drain 4x156-183%KO Absorb 4x85-100%KO | ||
Bulbasaur GrassPoison | D | |
Obtain MethodPallet Town Gift Available Moves Moves
Damage vs Onix View Bulbasaur builds →Razor Leaf 4x190-225%KO Vine Whip 4x156-183%KO Mega Drain 4x142-167%KO | ||
Bellsprout GrassPoison | D | |
Available Moves Moves
Damage vs Onix View Bellsprout builds →Vine Whip 4x169-200%KO Mega Drain 4x149-175%KO | ||
Paras BugGrass | D | |
Available Moves Moves
Damage vs Onix View Paras builds →Dig 2x31-36% Mega Drain 4x113-133%KO | ||
Lapras WaterIce | B | |
Obtain MethodSilph Co Gift Available Moves Moves
Damage vs Onix View Lapras builds →Ice Beam 2x187-221%KO Surf 4x375-442%KO Bubble Beam 4x275-324%KO Water Gun 4x174-205%KO | ||
 Parasect BugGrass | C | |
Available Moves Moves
Damage vs Onix View Parasect builds →Dig 2x37-45% Mega Drain 4x134-158%KO | ||
Oddish GrassPoison | D | |
Available Moves Moves
Damage vs Onix View Oddish builds →Petal Dance 4x449-529%KO Mega Drain 4x154-182%KO Absorb 4x80-95% | ||
Bulbasaur GrassPoison | D | |
Obtain MethodPallet Town Gift Available Moves Moves
Damage vs Onix View Bulbasaur builds →Razor Leaf 4x193-229%KO Vine Whip 4x161-189%KO Mega Drain 4x141-166%KO | ||
Squirtle Water | D | |
Obtain MethodPallet Town Gift Available Moves Moves
Damage vs Onix View Squirtle builds →Surf 4x261-308%KO Ice Beam 2x87-103%KO Dig 2x24-29% Submission 2x24-29% | ||
 Tangela Grass | C | |
Available Moves Moves
Damage vs Onix View Tangela builds →Solar Beam 4x573-675%KO Mega Drain 4x196-231%KO Absorb 4x103-121%KO | ||
Parasect BugGrass | C | |
Available Moves Moves
Damage vs Onix View Parasect builds →Solar Beam 4x382-450%KO Dig 2x36-42% Mega Drain 4x132-156%KO | ||
 Dewgong WaterIce | C | |
Available Moves Moves
Damage vs Onix View Dewgong builds →Blizzard 2x198-234%KO Ice Beam 2x163-193%KO Surf 4x328-387%KO Aurora Beam 2x119-141%KO | ||
 Exeggcute GrassPsychic | D | |
 Gloom GrassPoison | D | |
Available Moves Moves
Damage vs Onix View Gloom builds →Petal Dance 4x505-594%KO Solar Beam 4x505-594%KO Mega Drain 4x171-202%KO Absorb 4x88-104%KO | ||
Tangela Grass | C | |
Available Moves Moves
Damage vs Onix View Tangela builds →Solar Beam 4x593-698%KO Mega Drain 4x204-240%KO Absorb 4x106-125%KO | ||
Parasect BugGrass | C | |
Available Moves Moves
Damage vs Onix View Parasect builds →Solar Beam 4x398-469%KO Dig 2x36-44% Mega Drain 4x139-164%KO | ||
Dewgong WaterIce | C | |
Available Moves Moves
Damage vs Onix View Dewgong builds →Blizzard 2x205-243%KO Ice Beam 2x169-199%KO Surf 4x338-398%KO Aurora Beam 2x123-145%KO | ||
Exeggcute GrassPsychic | D | |
Gloom GrassPoison | D | |
Available Moves Moves
Damage vs Onix View Gloom builds →Petal Dance 4x519-611%KO Solar Beam 4x519-611%KO Mega Drain 4x175-207%KO Absorb 4x93-109%KO | ||
In Red & Blue, Cloyster can KO Onix with Blizzard (242-284%). Articuno threatens a KO with Blizzard (264-311%). Golem deals 81-95% with Earthquake.
 Cloyster WaterIce | A | |
Recommended Build Moves
Damage vs Onix View Cloyster builds →Explosion27-32% Clamp 4x157-185%KO Blizzard 2x242-284%KO | ||
 Articuno Ice | B | |
Recommended Build Moves
Damage vs Onix View Articuno builds →Blizzard 2x264-311%KO Hyper Beam15-18% Ice Beam 2x216-255%KO | ||
 Golem RockGround | B | |
Recommended Build Moves
Damage vs Onix View Golem builds →Earthquake 2x81-95% Explosion33-39% Rock Slide15-18% Body Slam11-13% | ||
 Victreebel GrassPoison | C | |
Recommended Build Moves
Damage vs Onix View Victreebel builds →Wrap2-2% | ||
 Machamp Fighting | C | |
Recommended Build Moves
Damage vs Onix View Machamp builds →Earthquake 2x57-67% Body Slam12-14% Submission 2x69-81% | ||
Red & Blue Evolution
A Rock/Ground type with 370 stats, Onix has a chain leading to Steelix. Breeding won't work. The evolved forms gain up to 140 total stats over Onix. View every chain in the Evolution Chart.
How to Evolve
Red & Blue Onix Best Moveset
Best Build
Utility Moveset
- Explosion
- Bind
- Earthquake
- Rock Slide
Recommended Teammates
Moves
The level-up pool is slim, so TMs matter here. Onix's Normal coverage all comes from technical machines, built on top of Earthquake and Dig for same-type damage. Double-Edge and Earthquake are the payoff moves.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Red & Blue Onix Locations
Onix is available from early-game routes onward at high spawn rates. 10 encounter spots give you plenty of options. Grab one early and it'll be ready to evolve or train by mid-game.
Best Locations to Catch Onix in Red & Blue
Onix's encounter pool splits between Blue and Red. You've got 10 walking spots at Lv. 13-45 total, but your version determines which ones actually show up.
Onix Guide
At 370 BST, Onix is firmly in pre-evolution territory. Evolve it into Steelix before bringing it to any serious fight.
In Red & Blue, 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 and Ground-type attackers are also a problem. With 5 weakness types, most competitive teams carry at least one counter.
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 Red & Blue, 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.
In Red & Blue, run Explosion, Bind, Earthquake, and Rock Slide on Onix. Explosion is the most common pick at 21% usage. Earthquake provides reliable STAB damage.
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