Onix (Pokémon)

← #094: Gengar	Pokémon	#096: Drowzee →
This article is about the species. For a specific instance of this species, see Onix (disambiguation).

Onix イワーク Iwark #095
Art by Ken Sugimori from FireRed and LeafGreen
Type Rock Ground Unknown Unknown Blue-Striped Unknown Unknown Unknown Unknown Unknown Unknown Unknown Unknown	Category Rock Snake Pokémon
Abilities Rock Head or Sturdy Sturdy Blue-Striped ----- Weak Armor Hidden Ability
Exp. at Lv. 100 1,000,000
Regional Pokédex numbers Kanto #095 Johto #062 Hoenn #265 Sinnoh #034 Unova #071 Not in any regional Pokédex
Regional Browser numbers Fiore R— Almia R— Oblivia
Height 28'10" Imperial 8.8 m Metric 28'10"/8.8 m Red-Striped 0'0"/0.0 m Blue-Striped 0'0"/0.0 m
Weight 463.0 lbs. Imperial 210.0 kg Metric 463.0 lbs./210.0 kg Red-Striped 0.0 lbs./0.0 kg Blue-Striped 0.0 lbs./0.0 kg
Dex color Gray	Catch rate 45 (5.9%)
Body style Blue-Striped	Footprint      Blue-Striped
Gender ratio Gender unknown Unknown 50% male, 50% female
Breeding Mineral group 26 cycles (6630 minimum steps)
EV yield HP 0 Atk 0 Def 1 Sp.Atk 0 Sp.Def 0 Speed 0 Base Exp.: 108 Battle Exp.: 1081*
External links On Smogon Pokédex: Generation I Generation II Generation III Generation IV Generation V Generation VI Generation VII Generation VIII Generation IX Artwork on Bulbagarden Archives

Onix (Japanese: イワーク Iwark) is a dual-type Rock/Ground Pokémon.

It evolves into Steelix when traded holding a Metal Coat.

Biology

Physiology

Onix resembles a giant chain of gray boulders, with a rocky spine on its head. This Pokémon has a magnet in its brain that serves as an internal compass. Onix's body becomes more rounded and smoother as it grows with age. A fully-grown Onix measures at an enormous 28 feet 10 inches, or 8.8 meters.

Gender differences

None.

Special abilities

Onix tunnel under the ground at over fifty miles per hour, which causes tremors. If they take a hard enough blow and their body falls apart, they can regrow the rest in a matter of a few weeks. They share this trait with Arbok.

Behavior

They are very hotheaded Pokémon and will constantly attack humans and Pokémon when various objects are caught in its craggy body. However, domesticated Onix will show signs of distress instead of attacking others.

Habitat

Onix can be found in mountains and caves, though they prefer underground tunnels with little light. It can also be found in craggy mountains and abandoned mines. It is most common in Kanto, Johto, and Sinnoh, with some rare appearances in Unova.

Diet

Main article: Pokémon food

Onix eats large boulders.

In the anime

Onix in the anime

Major appearances

Brock's Onix

Onix's first major appearance was in Showdown in Pewter City under the ownership of Brock. He used it in his journeys in Kanto and Johto before giving it to his little brother, Forrest, in A Family That Battles Together Stays Together!. At some time before Grating Spaces, it evolved into a Steelix.

Bruno's Onix

Ash and his friends encountered a giant Onix in To Master the Onixpected. It was on a rampage until Bruno managed to get a Sandslash from under the Rock Snake Pokémon's "skin." Bruno captured the Onix afterward.

Crystal Onix

The Crystal Onix featured a special Onix whose body is made out of glass crystal. Ash and his friends helped a glass sculptor named Mateo search for it because Mateo believed it would help inspire him to be better at his craft.

Other

An Onix made its debut appearance in Pokémon - I Choose You!. It was the next Pokémon an unknown Trainer chose after the opponent's Gengar put their Nidorino to sleep.

In Hello, Pummelo!, Drake of the Orange Crew owns an Onix and he used it to fight Ash's Squirtle in the second round in the Orange League Champion match. During the battle with Squirtle, Drake's Onix dug underground and emerged to use Bind on Squirtle, but Squirtle used Withdraw followed by a Hydro Pump, soaking Drake's Onix into submission. After drenching Drake's Onix, Squirtle defeated the Onix with a Skull Bash. It reappeared in a flashback in the following episode.

Several Onix appeared in Tunnel Vision where they resided in the Onix Tunnel and attacked anyone who attempted to pass through it.

A "King Onix" was featured in Hooked on Onix. Team Rocket tricked King Onix into thinking Ash and his friends were going to destroy his kingdom. When Ash managed to convince King Onix that he and his friends weren't bad by defeating it in a battle, Team Rocket tried to steal the royal Rock Snake Pokémon, but their plan was foiled, as usual.

Roark's Onix was first seen in Shapes of Things to Come where it was used against Paul's Elekid and Chimchar. In A Gruff Act to Follow!, it defeated Ash's Turtwig, followed by Ash's Pikachu but Pikachu managed to defeat it in a rematch in O'er the Rampardos we Watched!.

A rampaging Onix appeared in A Maze-ing Race!.

Multiple wild Onix are set to appear in BW087.

Minor appearances

An Onix appeared in Mewtwo Strikes Back.

Multiple Onix were among the Pokémon seen at Professor Oak's Laboratory in Showdown at the Po-ké Corral.

An Onix, under the ownership of an unnamed Trainer, was treated by Nurse Joy in The Joy of Pokémon.

An Onix belonging to the natives of the Golden Island, appeared in Meowth Rules!.

Multiple Onix also appeared in The Power of One.

An Onix was seen in a fantasy in The Rivalry Revival.

An Onix, under the ownership of a Trainer, appeared in Celebi: Voice of the Forest.

Janina, Jasmine's apprentice, has an Onix in the episode Fight for the Light. Her Onix was heavily coated in wax for protection against Water attacks.

An Onix appeared in the opening of Destiny Deoxys.

Multiple Onix appeared in Lucario and the Mystery of Mew as part of the feuding armies.

An Onix made a brief cameo in Pokémon Mystery Dungeon: Explorers of Sky - Beyond Time & Darkness.

Brock used an Onix in One Team, Two Team, Red Team, Blue Team! as part of the Pokémon Triathlon.

An Onix appeared in Steeling Peace of Mind!, and again in Promoting Healthy Tangrowth!.

An Onix appeared in A Rivalry to Gible On!.

An Onix appeared in Bucking the Treasure Trend! where it attacked Team Rocket.

An Onix appeared in the opening scenes of Zoroark: Master of Illusions.

Pokédex entries

In the manga

Onix in the Electric Tale of Pikachu

In the Electric Tale of Pikachu manga

Brock has an Onix in The Electric Tale of Pikachu.

In the Pokémon Adventures manga

Onix debuts in Onix is On! of the Red, Green & Blue arc as Brock's main Pokémon, however a picture of it is shown on a leaflet in Wanted: Pikachu!. Onix later continues to make appearances with Brock in various volumes onwards.

Bruno owns an Onix, on which he battles Bill, Lt. Surge and Red on Cerise Island. The Onix later manages to carry Bruno and Koga off the collapsing island. Another wild Onix was also seen on Cerise Island.

Roark has an Onix which he used it during Platinum's Gym Battle in A Conk on Cranidos's Cranium.

In the Pokémon Pocket Monsters manga

Brock owns an Onix in Pokémon Pocket Monsters.

An Onix took part in a baseball match in Fierce Competition at the Pokémon Baseball Tournament!.

Giovanni sent out his Onix to prevent Isamu from interfering with his plans on creating Mewtwo.

An Onix is seen with Isamu during the curry cooking competition that went on in Curry Showdown! Which is the Most Delicious?.

Kai Midorikawa's Onix first appeared in PM042.

Bruno owns two Onix as seen in PM034.

In the Pokémon Zensho manga

An Onix under the ownership of Brock appeares in Pokémon Zensho.

In the Pokémon Diamond and Pearl Adventure! manga

Hareta catches an Onix on Iron Island in Serious Training on Iron Island!!.

Byron has an Onix which was used as an obstacle in a challenge in Challenge! The Fortress Of Steel!!.

Pokédex entries

In the TCG

Main article: Onix (TCG)

Other appearances

Super Smash Bros.

Onix is obtainable in a Poké Ball. Once thrown, it flies up into the sky and uses Rock Throw on the player's opponents. This will hit everyone on the field except Kirby if he uses his down special move.

Super Smash Bros. Melee

Onix is the second Poké Float to appear. It provides a horizontally flat area all the time it is on-screen, though it becomes diagonal as it leaves the screen.

Game data

Pokédex entries

Game locations

In side games

In events

Held items

Game		Held Item(s)
Gold	Silver	Bitter Berry (100%)
Crystal
FireRed	LeafGreen	Hard Stone (5%)

Stats

Base stats

Pokéathlon stats

Type effectiveness

Learnset

By leveling up

By TM/HM

Generation V Other generations: I - II - III - IV - VI - VII - VIII - IX
TM		Move	Type	Cat.	Pwr.	Acc.	PP
	TM05	Roar	Normal	Status	0000—	100}}100%	20
	TM06	Toxic	Poison	Status	0000—	090}}90%	10
	TM10	Hidden Power	Normal	Special	0000—	100}}100%	15
	TM11	Sunny Day	Fire	Status	0000—	—}}—%	5
	TM12	Taunt	Dark	Status	0000—	100}}100%	20
	TM17	Protect	Normal	Status	0000—	—}}—%	10
	TM21	Frustration	Normal	Physical	0000—	100}}100%	20
	TM23	Smack Down	Rock	Physical	05050	100}}100%	15
	TM26	Earthquake	Ground	Physical	100100	100}}100%	10
	TM27	Return	Normal	Physical	0000—	100}}100%	20
	TM28	Dig	Ground	Physical	08080	100}}100%	10
	TM32	Double Team	Normal	Status	0000—	—}}—%	15
	TM37	Sandstorm	Rock	Status	0000—	—}}—%	10
	TM39	Rock Tomb	Rock	Physical	05050	080}}80%	10
	TM41	Torment	Dark	Status	0000—	100}}100%	15
	TM42	Facade	Normal	Physical	07070	100}}100%	20
	TM44	Rest	Psychic	Status	0000—	—}}—%	10
	TM45	Attract	Normal	Status	0000—	100}}100%	15
	TM48	Round	Normal	Special	06060	100}}100%	15
	TM64	Explosion	Normal	Physical	250250	100}}100%	5
	TM66	Payback	Dark	Physical	05050	100}}100%	10
	TM69	Rock Polish	Rock	Status	0000—	—}}—%	20
	TM71	Stone Edge	Rock	Physical	100100	080}}80%	5
	TM74	Gyro Ball	Steel	Physical	0000—	100}}100%	5
	TM77	Psych Up	Normal	Status	0000—	—}}—%	10
	TM78	Bulldoze	Ground	Physical	06060	100}}100%	20
	TM80	Rock Slide	Rock	Physical	07575	090}}90%	10
	TM82	Dragon Tail	Dragon	Physical	06060	090}}90%	10
	TM87	Swagger	Normal	Status	0000—	090}}90%	15
	TM90	Substitute	Normal	Status	0000—	—}}—%	10
	TM91	Flash Cannon	Steel	Special	08080	100}}100%	10
	TM94	Rock Smash	Fighting	Physical	04040	100}}100%	15
	HM04	Strength	Normal	Physical	08080	100}}100%	15
Bold indicates a move that gets STAB when used by Onix Italic indicates a move that gets STAB only when used by an evolution of Onix Click on the generation numbers at the top to see TM moves from other generations

By breeding

Generation V Other generations: II - III - IV - VI - VII - VIII - IX
Father	Move	Type	Cat.	Pwr.	Acc.	PP
	Block	Normal	Status	—	—%	5
	Defense Curl	Normal	Status	—	—%	40
	Flail	Normal	Physical	—	100%	15
	Heavy Slam	Steel	Physical	—	100%	10
	Rock Blast	Rock	Physical	25	90%	10
	Rock Climb	Normal	Physical	90	85%	20
	Rollout	Rock	Physical	30	90%	20
	Stealth Rock	Rock	Status	—	—%	20
Moves marked with an asterisk (*) must be chain bred onto Onix in Generation V Moves marked with a double dagger (‡) can only be bred from a Pokémon who learned the move in an earlier generation. Moves marked with a superscript game abbreviation can only be bred onto Onix in that game. Bold indicates a move that gets STAB when used by Onix Italic indicates a move that gets STAB only when used by an evolution of Onix Click on the generation numbers at the top to see Egg moves from other generations

By tutoring

Dream World-only moves

Side game data

Pokémon Pinball     Acquisition: Catch		Pokémon Pinball RS  N/A  Not available		Pokémon Trozei!    Rarity: Common
Pokémon Mystery Dungeon Red Rescue Team and Blue Rescue Team File:MDP RT 095.png Body size: 4 Recruit rate: 9.6% Friend Area: Boulder Cave Phrases 51%-100% HP I tell you, I'm better under the ground! 26%-50% HP My health is down to half. Better take it easy. 1%-25% HP It's looking bad... My body's cracking up... Level up Heheheh... Leveled up. Partner phrases 51%-100% HP <name>, my HP is between 51% and 100%. 26%-50% HP <name>, my HP is between 26% and 50%. 1%-25% HP <name>, my HP is between 1% and 25%. Level up Heheheh... Leveled up.
Pokémon Mystery Dungeon Explorers of Time, Explorers of Darkness, and Explorers of Sky Body size: 4 Recruit rate: 1% IQ group: E
Pokémon Ranger Group:  Normal  Poké Assist: None Field move: None Loops: 0 Min. exp.: 0 Max. exp.: 0 Browser entry   This Pokémon does not have a browser entry.
Pokémon Ranger: Shadows of Almia Group:  Normal  Poké Assist: None Field move: None Browser entry   This Pokémon does not have a browser entry.
Pokémon Ranger: Guardian Signs Group: Poké Assist: Field move:  Normal  None Past ( Normal ) None Past (Electrify ×1) Browser entry   This Pokémon does not have a browser entry.
Pokémon Rumble Attack ● Defense ●●●● Speed ●●● Attack Not Available Defense Speed			Pokémon Rumble Blast Attack ● Defense ●●●● Speed ●●● Attack Not Available Defense Speed Attack Not Available Defense Speed Attack Not Available Defense Speed
PokéPark Wii: Pikachu's Adventure PokéPark Pad entry: This Pokémon has no PokéPark Pad entry.
PokéPark 2: Wonders Beyond Strong: {{{Park2strong}}} Weak: {{{Park2weak}}} PokéPark Pad entry: This Pokémon has no PokéPark Pad entry.
Pokémon Conquest HP: Move: {{{ConquestMove}}} Attack: Ability 1: {{{ConquestAbility1}}} Defense: Ability 2: {{{ConquestAbility2}}} Speed: Ability 3: {{{ConquestAbility3}}} Does not evolve. Range: 0 Perfect Links: {{{ConquestLink}}}

Evolution

Unevolved Onix  Rock  Ground

Trade holding Metal Coat →

First evolution Steelix  Steel  Ground

Sprites

Gen	Game
I	Red	Blue	Yellow		Red (Ja)	Green	Back
II	Gold	Silver	Crystal				Back
III	Ruby	Sapphire	Emerald		FireRed	LeafGreen	Back
IV	Diamond	Pearl	Platinum		HeartGold	SoulSilver	Back
V	Black	White	Black 2	White 2			Back

For other sprites and images, please see Onix images on Bulbagarden Archives.

Trivia

• In Generation I, Onix was the longest Pokémon, but in Generation II, it was dropped to second place by its evolution Steelix. When Wailord was introduced in Generation III, it became the third longest.
• Onix is the first Pokémon in the National Pokédex order that gained an evolution when it did not evolve from or into another Pokémon in its debut Generation.
• Onix is the largest and heaviest Pokémon that evolves once.
• Onix, in Generation I, is the highest-level non-legendary wild Pokémon available without the use of a glitch that the Pokédex has recorded data on its location. Onix can be found in Kanto's Victory Road at level 49.
  • However, Ditto up to level 65 can be found in the Cerulean Cave, but in the Generation I games, the Pokédex does not inform the player of the Pokémon available in the cave, as Pokémon only found there would just display as "Area Unknown" in the Area section of the Pokédex.
• By being under the ownership of Bruno in Generation II, Onix is one of the few unevolved Pokémon that can evolve in the same generation as that of the Elite Four member to whom it belongs, the others being Dragonair, Shelgon, Haunter, and Sealeo. However, it's the only one where the Elite Four member doesn't own its evolved form.
• Of all the Pokémon that can evolve, Onix has the highest base Defense.
• Onix is the largest Pokémon that can legally hatch from an Egg that has no pre-evolution.
• Onix is one of four Pokémon which changes its primary type upon evolution (from Rock to Steel). The others are Azurill, Swablu and Eevee.
  • Onix and Swablu are also the only dual-typed Pokémon that have their primary type change during evolution.
    • In addition, Onix is the only Pokémon whose evolved form has a type-advantage against its predecessor, without that type being identical to both Pokémon (such as Dragon or Ghost).
• The Onix family is the only one whose all members can be acquired with in-game trades. However it's only possible in Pokémon HeartGold and SoulSilver where the player can trade Bellsprout for Onix in Violet City and any Pokémon for Steelix in Olivine City.
• An item in the games called the Lagging Tail resembles the end of Onix's tail.

Origin

Onix is most likely based on a combination of a snake and earthworm. It may also been based on the wyrm, a type of dragon that has been presented as limbless and burrowing.

Name origin

Onix is a corruption of onyx (a mineral).

Iwark may be a combination of 岩 iwa (rock) and スネ−ク snake.

In other languages

Language Title Meaning Japanese イワーク Iwark From 岩 iwa and スネ−ク French Onix Same as English name Spanish Onix Same as English name German Onix Same as English name Italian Onix Same as English name Korean 롱스톤 Rongseuton From the English words long stone Mandarin Chinese 大岩蛇 Dàyánshé Literally "Big boulder snake" Cantonese Chinese 大岩蛇 Daaihngàahmsèh Literally "Big boulder snake"

More languages

Related articles

• Brock's Onix
• Bruno's Onix
• Crystal Onix

External links

• Article on Wikipedia

Notes

← #094: Gengar

Pokémon

#096: Drowzee →

This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon as a species.