Onix • Generation VIII Pokédex

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Onix
Pokédex Page for Onix

This is the Marriland Pokédex page for Onix, showing its information and moves in Pokémon Sword & Shield as well as Pokémon Brilliant Diamond & Shining Pearl.

To choose which version to view Onix's moves and location information from, please use the toggle below, or use the toggles further down in the page.

Onix

Onix
Sprite of Onix in Pokémon HOME

Onix's Type

ROCK
GROUND

Onix's Pokédex #s

National #
95
Galar #
178
Armor #
--
Crown #
--
Sinnoh #
34

Onix's Base Stats

HP:
35
Attack:
45
Defense:
160
Sp. Atk:
30
Sp. Def:
45
Speed:
70
Total:
385

Misc. Info

Height:
28'10" (8.8m)
Weight:
463 lbs. (210 kg)
Gender Ratio:
Egg Groups:
Mineral
EXP At Lv. 100:
1,000,000
EV Yield:
1 Defense
Base EXP:
77
Catch Rate:
45
Base Happiness:
70

Onix's Abilities

Here are what abilities Onix can possibly have, along with their effects.
Rock Head
Prevents all recoil damage Onix takes from moves that cause recoil damage.
Sturdy
If Onix has full HP and would be knocked out by a single hit, it survives with 1 HP. Also protects against OHKO moves.
Weak Armor
Raises Onix's Speed and lowers its Defense by one stage whenever it is hit by a Physical-based move.

Weaknesses & Resistances

Below is a list of what Onix's weakness and resistance is to various types.
WATER
GRASS
ICE
FIGHTING
GROUND
STEEL
½
NORMAL
FIRE
FLYING
ROCK
¼
POISON
immune
ELECTRIC

Onix's Evolution Line

Below you'll find a list of all Pokémon Onix evolves from or into, along with its evolution method.
Onix
Onix
starting form
Steelix
Steelix
trade while holding Metal Coat

Onix's Moves in Brilliant Diamond & Shining Pearl

Below is a list of all of the moves that Onix can learn, along with what level it learns the move, the TM or TR number, and what egg moves it can learn, if any. Hover over a move (desktop/laptop) or click the ? button next to the move (mobile/tablet) to find out more about the move.

Level Up Moves

Here are all of the moves Onix learns via level up. Anything marked "Evo." means it learns it upon evolving. If the level is 1, it can be relearned at a Pokémon Center.
Lv. Move Type Category Power Acc.% PP Target Info
1
Tackle
Damages the target.
NORMAL
PHYSICAL
40 100% 35 One Target
1
Harden
Raises Onix's Defense by one stage.
NORMAL
STATUS
-- -- 30 User
1
Bind
Traps the target for 4–5 turns, preventing them from switching or fleeing and also doing 1/8 max HP after every turn.
NORMAL
PHYSICAL
15 85% 20 One Target
1
Rock Throw
Damages the target.
ROCK
PHYSICAL
50 90% 15 One Target
4
Smack Down
The target can be hit by Ground-type moves after being hit by Smack Down.
ROCK
PHYSICAL
50 100% 15 One Target
8
Rock Polish
Raises Onix's Speed by two stages.
ROCK
STATUS
-- -- 20 User
12
Dragon Breath
Has a 30% chance to paralyze the target.
DRAGON
SPECIAL
60 100% 20 One Target
16
Curse
Raises Onix's Attack and Defense by one stage, but lowers its Speed by one stage.
GHOST
STATUS
-- -- 10 Counter
20
Rock Slide
Has a 30% chance of causing all nearby enemies to flinch.
ROCK
PHYSICAL
75 90% 10 Nearby Enemies
24
Screech
Lowers the target's Defense by two stages.
NORMAL
STATUS
-- 85% 40 One Target
28
Sand Tomb
Traps the target for 4–5 turns, preventing them from switching or fleeing and also doing 1/8 max HP after every turn.
GROUND
PHYSICAL
35 85% 15 One Target
32
Stealth Rock
Sets floating rocks on the enemy's field. Does 1/8 max HP to enemies that switch in. Weakness/resistance to Rock affects this damage.
ROCK
STATUS
-- -- 20 Enemy Field
36
Slam
Damages the target.
NORMAL
PHYSICAL
80 75% 20 One Target
40
Sandstorm
Changes the weather to a sandstorm for 5 turns.
ROCK
STATUS
-- -- 10 Entire Field
44
Dig
Can't be hit on the first turn, attacks on the second turn.
GROUND
PHYSICAL
80 100% 10 One Target
48
Iron Tail
30% chance of lowering the target's Defense by one stage.
STEEL
PHYSICAL
100 75% 15 One Target
52
Stone Edge
Has a higher critical hit rate. (+1 stage.)
ROCK
PHYSICAL
100 80% 5 One Target
56
Double-Edge
Onix takes 33% of Double-Edge's damage as recoil damage.
NORMAL
PHYSICAL
120 100% 15 One Target

TM Moves

Here are all of the moves that Onix can learn via TM (Technical Machine). These moves can be taught an unlimited number of times once the TM is obtained.
TM Move Type Category Power Acc.% PP Target Info
TM15
Dig
Can't be hit on the first turn, attacks on the second turn.
GROUND
PHYSICAL
80 100% 10 One Target
TM16
Screech
Lowers the target's Defense by two stages.
NORMAL
STATUS
-- 85% 40 One Target
TM20
Self-Destruct
Onix is knocked out after using Self-Destruct.
NORMAL
PHYSICAL
200 100% 5 All But Self
TM21
Rest
Onix restores its HP to full and falls asleep for two turns.
PSYCHIC
STATUS
-- -- 10 User
TM22
Rock Slide
Has a 30% chance of causing all nearby enemies to flinch.
ROCK
PHYSICAL
75 90% 10 Nearby Enemies
TM24
Snore
Can only be used while asleep. 30% chance of making the target flinch.
NORMAL
SPECIAL
50 100% 15 One Target
TM25
Protect
Protects Onix from attacks for a turn. Low chance of working on consecutive turns.
NORMAL
STATUS
-- -- 10 User
TM26
Scary Face
Lowers the target's Speed by two stages.
NORMAL
STATUS
-- 100% 10 One Target
TM31
Attract
Infatuates Pokémon of the opposite gender.
NORMAL
STATUS
-- 100% 15 One Target
TM32
Sandstorm
Changes the weather to a sandstorm for 5 turns.
ROCK
STATUS
-- -- 10 Entire Field
TM34
Sunny Day
Changes the weather to sunny for 5 turns.
FIRE
STATUS
-- -- 5 Entire Field
TM39
Facade
Does double damage if Onix is poisoned, burned, or paralyzed.
NORMAL
PHYSICAL
70 100% 20 One Target
TM48
Rock Tomb
100% chance of lowering the target's Speed by one stage.
ROCK
PHYSICAL
60 95% 15 One Target
TM49
Sand Tomb
Traps the target for 4–5 turns, preventing them from switching or fleeing and also doing 1/8 max HP after every turn.
GROUND
PHYSICAL
35 85% 15 One Target
TM54
Rock Blast
Hits the target two to five times in a row.
ROCK
PHYSICAL
25 90% 10 One Target
TM57
Payback
Does double damage if Onix attacks after the target.
DARK
PHYSICAL
50 100% 10 One Target
TM76
Round
Deals double damage if Round has already been used and causes any other Pokémon using Round to use it immediately afterward.
NORMAL
SPECIAL
60 100% 15 One Target
TM81
Bulldoze
100% chance of lowering all nearby Pokémon's Speed by one stage.
GROUND
PHYSICAL
60 100% 20 All But Self
TM97
Brutal Swing
Damages all nearby Pokémon.
DARK
PHYSICAL
60 100% 20 All But Self
TM98
Stomping Tantrum
Power is doubled if Onix missed the target last turn.
GROUND
PHYSICAL
75 100% 10 One Target
TM99
Breaking Swipe
Lowers all nearby enemies' Attack by one stage.
DRAGON
PHYSICAL
60 100% 15 Nearby Enemies

TR Moves

Here are all of the moves that Onix can learn via TR (Technical Record). These moves can be taught only once per TR, but TRs can be obtained in the Wild Area and other locations.
TR Move Type Category Power Acc.% PP Target Info
TR01
Body Slam
Has a 30% chance to paralyze the target.
NORMAL
PHYSICAL
85 100% 15 One Target
TR10
Earthquake
Does double damage against targets using Dig.
GROUND
PHYSICAL
100 100% 10 All But Self
TR20
Substitute
Costs 25% of Onix's max HP. Sets up a Substitute to block effects and damage.
NORMAL
STATUS
-- -- 10 User
TR26
Endure
Will survive any hit with at least 1 HP left this turn. 50% chance of working on consecutive turns.
NORMAL
STATUS
-- -- 10 User
TR27
Sleep Talk
Can only be used while asleep. Uses one of Onix's moves at random.
NORMAL
STATUS
-- -- 10 User
TR31
Iron Tail
30% chance of lowering the target's Defense by one stage.
STEEL
PHYSICAL
100 75% 15 One Target
TR37
Taunt
Prevents the target from using Status moves for the next few turns.
DARK
STATUS
-- 100% 20 One Target
TR51
Dragon Dance
Raises Onix's Attack and Speed by one stage.
DRAGON
STATUS
-- -- 20 User
TR52
Gyro Ball
Does more damage based on how much lower Onix's Speed is compared to the target's.
STEEL
PHYSICAL
varies 100% 5 One Target
TR62
Dragon Pulse
Damages the target.
DRAGON
SPECIAL
85 100% 10 One Target
TR67
Earth Power
10% chance of lowering the target's Sp. Def by one stage.
GROUND
SPECIAL
90 100% 10 One Target
TR70
Flash Cannon
10% chance of lowering the target's Sp. Def by one stage.
STEEL
SPECIAL
80 100% 10 One Target
TR74
Iron Head
Has a 30% chance of causing the target to flinch.
STEEL
PHYSICAL
80 100% 15 One Target
TR75
Stone Edge
Has a higher critical hit rate. (+1 stage.)
ROCK
PHYSICAL
100 80% 5 One Target
TR76
Stealth Rock
Sets floating rocks on the enemy's field. Does 1/8 max HP to enemies that switch in. Weakness/resistance to Rock affects this damage.
ROCK
STATUS
-- -- 20 Enemy Field
TR79
Heavy Slam
Power ranges from 40–120 based on Onix's weight vs. the target's weight.
STEEL
PHYSICAL
varies 100% 10 One Target
TR87
Drill Run
Has a higher critical hit rate. (+1 stage.)
GROUND
PHYSICAL
80 95% 10 One Target
TR94
High Horsepower
Damages the target.
GROUND
PHYSICAL
95 95% 10 One Target
TR99
Body Press
Does more damage based on how high Onix's Defense stat is.
FIGHTING
PHYSICAL
80 100% 10 One Target

Egg Moves

Here are all of the moves that Onix can learn as Egg Moves. In the case of evolved Pokémon, it shows what Egg Moves it can learn in its lowest evolutionary stage. Click the word EGG to find compatible breeding Pokémon to get that Egg Move onto Onix.
Move Type Category Power Acc.% PP Target Info
EGG
Flail
Does more damage when Onix's HP is low.
NORMAL
PHYSICAL
varies 100% 15 One Target
EGG
Block
Prevents the target from fleeing or switching out.
NORMAL
STATUS
-- -- 5 One Target
EGG
Defense Curl
Raises Onix's Defense by one stage. Rollout and Ice Ball do double damage.
NORMAL
STATUS
-- -- 40 User
EGG
Wide Guard
Protects your team from moves that hit multiple targets for the turn.
ROCK
STATUS
-- -- 10 User's Field
EGG
Rollout
Lose control for up to 5 turns, with each hit doing 2× as much. Doubles damage if Defense Curl was used beforehand.
ROCK
PHYSICAL
30 90% 20 One Target
EGG
Dragon Tail
-6 priority. After doing damage, forces the foe to switch out, or ends wild battles.
DRAGON
PHYSICAL
60 90% 10 One Target
EGG
Head Smash
Onix takes 50% of Head Smash's damage as recoil damage.
ROCK
PHYSICAL
150 80% 5 One Target

Move Tutor Moves

Here are all of the moves that Onix can learn from Move Tutors. Most of these require the Expansion Pass and can be found in the Isle of Armor's Dojo, costing some Armorite Ore to teach. However, there are a few moves that can be taught aside from this.
Move Type Category Power Acc.% PP Target Info
TUTOR
Scorching Sands
Has a 30% chance to burn the target.
GROUND
SPECIAL
70 100% 10 One Target
TUTOR
Meteor Beam
Raises Onix's Sp. Atk by one stage. Charges for a turn, attacks on second turn.
ROCK
SPECIAL
120 90% 10 One Target

Level Up Moves

Here are all of the moves Onix learns via level up. Anything marked "Evo." means it learns it upon evolving. If the level is 1, it can be relearned at a Pokémon Center.
Lv. Move Type Category Power Acc.% PP Target Info
1
Tackle
Damages the target.
NORMAL
PHYSICAL
40 100% 35 One Target
1
Harden
Raises Onix's Defense by one stage.
NORMAL
STATUS
-- -- 30 User
1
Bind
Traps the target for 4–5 turns, preventing them from switching or fleeing and also doing 1/8 max HP after every turn.
NORMAL
PHYSICAL
15 85% 20 One Target
1
Rock Throw
Damages the target.
ROCK
PHYSICAL
50 90% 15 One Target
4
Smack Down
The target can be hit by Ground-type moves after being hit by Smack Down.
ROCK
PHYSICAL
50 100% 15 One Target
8
Rock Polish
Raises Onix's Speed by two stages.
ROCK
STATUS
-- -- 20 User
12
Dragon Breath
Has a 30% chance to paralyze the target.
DRAGON
SPECIAL
60 100% 20 One Target
16
Curse
Raises Onix's Attack and Defense by one stage, but lowers its Speed by one stage.
GHOST
STATUS
-- -- 10 Counter
20
Rock Slide
Has a 30% chance of causing all nearby enemies to flinch.
ROCK
PHYSICAL
75 90% 10 Nearby Enemies
24
Screech
Lowers the target's Defense by two stages.
NORMAL
STATUS
-- 85% 40 One Target
28
Sand Tomb
Traps the target for 4–5 turns, preventing them from switching or fleeing and also doing 1/8 max HP after every turn.
GROUND
PHYSICAL
35 85% 15 One Target
32
Stealth Rock
Sets floating rocks on the enemy's field. Does 1/8 max HP to enemies that switch in. Weakness/resistance to Rock affects this damage.
ROCK
STATUS
-- -- 20 Enemy Field
36
Slam
Damages the target.
NORMAL
PHYSICAL
80 75% 20 One Target
40
Sandstorm
Changes the weather to a sandstorm for 5 turns.
ROCK
STATUS
-- -- 10 Entire Field
44
Dig
Can't be hit on the first turn, attacks on the second turn.
GROUND
PHYSICAL
80 100% 10 One Target
48
Iron Tail
30% chance of lowering the target's Defense by one stage.
STEEL
PHYSICAL
100 75% 15 One Target
52
Stone Edge
Has a higher critical hit rate. (+1 stage.)
ROCK
PHYSICAL
100 80% 5 One Target
56
Double-Edge
Onix takes 33% of Double-Edge's damage as recoil damage.
NORMAL
PHYSICAL
120 100% 15 One Target

TM Moves

Here are all of the moves that Onix can learn via TM (Technical Machine). These moves can be taught once per use of the TM.
TM Move Type Category Power Acc.% PP Target Info
TM05
Roar
Forces the foe to switch out, or ends wild battles.
NORMAL
STATUS
-- -- 20 One Target
TM11
Sunny Day
Changes the weather to sunny for 5 turns.
FIRE
STATUS
-- -- 5 Entire Field
TM12
Taunt
Prevents the target from using Status moves for the next few turns.
DARK
STATUS
-- 100% 20 One Target
TM17
Protect
Protects Onix from attacks for a turn. Low chance of working on consecutive turns.
NORMAL
STATUS
-- -- 10 User
TM23
Iron Tail
30% chance of lowering the target's Defense by one stage.
STEEL
PHYSICAL
100 75% 15 One Target
TM26
Earthquake
Does double damage against targets using Dig.
GROUND
PHYSICAL
100 100% 10 All But Self
TM28
Dig
Can't be hit on the first turn, attacks on the second turn.
GROUND
PHYSICAL
80 100% 10 One Target
TM32
Double Team
Raises Onix's Evasion by one stage.
NORMAL
STATUS
-- -- 15 User
TM37
Sandstorm
Changes the weather to a sandstorm for 5 turns.
ROCK
STATUS
-- -- 10 Entire Field
TM39
Rock Tomb
100% chance of lowering the target's Speed by one stage.
ROCK
PHYSICAL
60 95% 15 One Target
TM41
Torment
Prevents the target from using the same move twice in a row.
DARK
STATUS
-- 100% 15 One Target
TM42
Facade
Does double damage if Onix is poisoned, burned, or paralyzed.
NORMAL
PHYSICAL
70 100% 20 One Target
TM44
Rest
Onix restores its HP to full and falls asleep for two turns.
PSYCHIC
STATUS
-- -- 10 User
TM45
Attract
Infatuates Pokémon of the opposite gender.
NORMAL
STATUS
-- 100% 15 One Target
TM58
Endure
Will survive any hit with at least 1 HP left this turn. 50% chance of working on consecutive turns.
NORMAL
STATUS
-- -- 10 User
TM59
Dragon Pulse
Damages the target.
DRAGON
SPECIAL
85 100% 10 One Target
TM64
Explosion
Onix is knocked out after using Explosion.
NORMAL
PHYSICAL
250 100% 5 All But Self
TM66
Payback
Does double damage if Onix attacks after the target.
DARK
PHYSICAL
50 100% 10 One Target
TM69
Rock Polish
Raises Onix's Speed by two stages.
ROCK
STATUS
-- -- 20 User
TM71
Stone Edge
Has a higher critical hit rate. (+1 stage.)
ROCK
PHYSICAL
100 80% 5 One Target
TM74
Gyro Ball
Does more damage based on how much lower Onix's Speed is compared to the target's.
STEEL
PHYSICAL
varies 100% 5 One Target
TM76
Stealth Rock
Sets floating rocks on the enemy's field. Does 1/8 max HP to enemies that switch in. Weakness/resistance to Rock affects this damage.
ROCK
STATUS
-- -- 20 Enemy Field
TM77
Psych Up
Copies all stat modifiers on the target.
NORMAL
STATUS
-- -- 10 One Target
TM80
Rock Slide
Has a 30% chance of causing all nearby enemies to flinch.
ROCK
PHYSICAL
75 90% 10 Nearby Enemies
TM82
Sleep Talk
Can only be used while asleep. Uses one of Onix's moves at random.
NORMAL
STATUS
-- -- 10 User
TM83
Bulldoze
100% chance of lowering all nearby Pokémon's Speed by one stage.
GROUND
PHYSICAL
60 100% 20 All But Self
TM87
Swagger
Raises the target's Attack by two stages and confuses it.
NORMAL
STATUS
-- 85% 15 One Target
TM90
Substitute
Costs 25% of Onix's max HP. Sets up a Substitute to block effects and damage.
NORMAL
STATUS
-- -- 10 User
TM91
Flash Cannon
10% chance of lowering the target's Sp. Def by one stage.
STEEL
SPECIAL
80 100% 10 One Target
TM96
Strength
Damages the target.
NORMAL
PHYSICAL
80 100% 15 One Target
TM98
Rock Smash
50% chance of lowering the target's Defense by one stage.
FIGHTING
PHYSICAL
40 100% 15 One Target
TM100
Rock Climb
Has a 20% chance of confusing the target.
NORMAL
PHYSICAL
90 85% 20 One Target

Egg Moves

Here are all of the moves that Onix can learn as Egg Moves. In the case of evolved Pokémon, it shows what Egg Moves it can learn in its lowest evolutionary stage. Click the word EGG to find compatible breeding Pokémon to get that Egg Move onto Onix.
Move Type Category Power Acc.% PP Target Info
EGG
Flail
Does more damage when Onix's HP is low.
NORMAL
PHYSICAL
varies 100% 15 One Target
EGG
Block
Prevents the target from fleeing or switching out.
NORMAL
STATUS
-- -- 5 One Target
EGG
Defense Curl
Raises Onix's Defense by one stage. Rollout and Ice Ball do double damage.
NORMAL
STATUS
-- -- 40 User
EGG
Wide Guard
Protects your team from moves that hit multiple targets for the turn.
ROCK
STATUS
-- -- 10 User's Field
EGG
Rollout
Lose control for up to 5 turns, with each hit doing 2× as much. Doubles damage if Defense Curl was used beforehand.
ROCK
PHYSICAL
30 90% 20 One Target
EGG
Dragon Tail
-6 priority. After doing damage, forces the foe to switch out, or ends wild battles.
DRAGON
PHYSICAL
60 90% 10 One Target
EGG
Head Smash
Onix takes 50% of Head Smash's damage as recoil damage.
ROCK
PHYSICAL
150 80% 5 One Target
EGG
Rock Blast
Hits the target two to five times in a row.
ROCK
PHYSICAL
25 90% 10 One Target
EGG
Heavy Slam
Power ranges from 40–120 based on Onix's weight vs. the target's weight.
STEEL
PHYSICAL
varies 100% 10 One Target

Onix's Detailed Stats

Below you'll find a more detailed table containing Onix's calculated stats, which are the stats that you actually see displayed in game. These are affected by a variety of things, such as level, Effort Values (EVs), Individual Values (IVs), and Onix's Nature.

By default, the stats you see in the table below show four different possibilities, all assuming Onix is level 100: its stats with 0 EVs, 252+ (max) EVs, 0 IVs, and 31 (max) IVs. Nature is not shown by default, so its maximum is 10% higher than shown here, and minium 10% lower.
Stats at
level 100
0 EVs 252+ EVs Base Stat
Min Max Min Max
HP
180 211 243 274 35
Attack
95 126 158 189 45
Defense
325 356 388 419 160
Sp. Atk
65 96 128 159 30
Sp. Def
95 126 158 189 45
Speed
145 176 208 239 70
Total
385

Where to Find Onix in Brilliant Diamond & Shining Pearl

If you're looking for where to find Onix, you'll find the various methods listed down below, along with any notes or special locations. This should help you figure out how to get Onix in Pokémon Sword & Shield. (Currently this does not show most "strong" static encounters or Max Raid Battles.)

Special Ways to Get Onix

There's a special wandering Onix near the entrance to the Wild Area from the station.

Onix in the Wild

East Lake Axewell

Random Encounters
Normal Weather
Norm.
Overcast
Over.
Raining
Rain
Thunderstorm
Strm.
Intense Sun
Sun
Snowing
Snow
Blizzard
Bliz.
Sandstorm
Sand.
Heavy Fog
Fog
-- -- -- -- 10% -- -- 10% --
Lv. 8-12 Lv. 8-12

Giant's Seat

Random Encounters
Normal Weather
Norm.
Overcast
Over.
Raining
Rain
Thunderstorm
Strm.
Intense Sun
Sun
Snowing
Snow
Blizzard
Bliz.
Sandstorm
Sand.
Heavy Fog
Fog
20% 20% -- -- 20% -- -- 20% --
Lv. 30-35 Lv. 30-35 Lv. 30-35 Lv. 30-35

Motostoke Riverbank

Random Encounters
Normal Weather
Norm.
Overcast
Over.
Raining
Rain
Thunderstorm
Strm.
Intense Sun
Sun
Snowing
Snow
Blizzard
Bliz.
Sandstorm
Sand.
Heavy Fog
Fog
-- -- -- -- -- -- -- 30% --
Lv. 26-28
Location information on where to find Onix in Pokémon Brilliant Diamond & Shining Pearl will be coming to the Marriland Pokédex in a future update! Thank you for your patience!

Pokédex Entries for Onix

Generation 8 Pokédex Entries

Sword
As it digs through the ground, it absorbs many hard objects. This is what makes its body so solid.
Shield
It rapidly bores through the ground at 50 mph by squirming and twisting its massive, rugged body.

Generation 6 Pokédex Entries

X
Burrows at high speed in search of food. The tunnels it leaves are used as homes by Diglett.
Y
It usually lives underground. It searches for food while boring its way through the ground at 50 miles per hour.
Omega Ruby Alpha Sapphire
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.

Generation 5 Pokédex Entries

Black White
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
Black 2 White 2
Opening its large mouth, it ingests massive amounts of soil and creates long tunnels.

Generation 4 Pokédex Entries

Diamond
When it travels underground, it causes rumbling and tremors. It can move at 50 mph.
Pearl
It squirms through the ground using its long and rugged body. It always eats while burrowing.
Platinum
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
HeartGold
It twists and squirms through the ground. The thunderous roar of its tunneling echoes a long way.
SoulSilver
It rapidly bores through the ground at 50 mph by squirming and twisting its massive, rugged body.

Generation 3 Pokédex Entries

Ruby Sapphire
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.
Emerald
There is a magnet in its brain that prevents an ONIX from losing direction while tunneling. As it grows older, its body becomes steadily rounder and smoother.
FireRed
It usually lives underground. It searches for food while boring its way through the ground at 50 miles per hour.
LeafGreen
As it grows, the stone portions of its body harden to become similar to black-colored diamonds.

Generation 2 Pokédex Entries

Gold
It twists and squirms through the ground. The thunderous roar of its tunneling echoes a long way.
Silver
It rapidly bores through the ground at 50 mph by squirming and twisting its mas­sive, rugged body.
Crystal
As it digs through the ground, it absorbs many hard objects. This is what makes its body so solid.

Generation 1 Pokédex Entries

Red Blue
As it grows, the stone portions of its body harden to become similar to a diamond, but colored black.
Yellow
Burrows at high speed in search of food. The tunnels it leaves are used as homes by DIGLETTs.
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