Onix (Japanese : イワーク Iwark ) is a dual-type Rock /Ground Pokémon introduced in Generation I .
It evolves into Steelix when traded holding a Metal Coat .
Biology
Onix is a Pokémon composed of a giant chain of gray boulders that become smaller towards the tail. Its length makes it the tallest Rock-type Pokémon. It has black eyes and a rounded snout. On top of its head is a rocky spine. As it grows older, it becomes more rounded and smoother, eventually becoming similar to black diamonds. Inside its brain is a magnet that serves as an internal compass.
Onix tunnels under the ground at over 50 miles (80 kilometers) per hour, which causes tremors and a terrifying roar that echoes a long way. Hard objects encountered while tunneling are absorbed into its body, which makes it very sturdy. It also consumes the boulders for food. The massive, winding tunnels it leaves behind are used as homes by Diglett . As seen in the Pokémon Stadium series , Onix is capable of rotating its head, or any part of its body, in a full 360 degrees. It is a very aggressive Pokémon that will constantly attack humans and other Pokémon when in pain, as seen in the anime . Onix can be found in mountains and caves .
In the anime
In the main series
Onix in the anime
Shiny Onix in the anime
Major appearances
Brock 's Onix debuted in Showdown in Pewter City . He used it in his journeys in Kanto and Johto before giving it to his little brother, Forrest , for him to train in A Family That Battles Together Stays Together! . At some point before Grating Spaces , it evolved into a Steelix .
Ash and his friends encountered a giant Onix in To Master the Onixpected . It was on a rampage until Bruno managed to pull a Sandslash out from two of its boulders. Bruno captured the Onix afterwards.
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
Onix debuted in Pokémon - I Choose You! . It was the next Pokémon a Trainer chose after the opponent's Gengar put their Nidorino to sleep .
Drake , the Orange Crew Supreme Gym Leader , was revealed to own an Onix in Hello, Pummelo! . He used it in the second round in the Orange League championship match against Ash ; it battled Squirtle and was defeated.
Multiple Onix appeared in Tunnel Vision , where they resided in the Onix Tunnel and attacked anyone who attempted to pass through it. They were temporarily put to sleep by Jigglypuff 's singing , but were eventually awakened by Team Rocket .
An Onix appeared in Fight for the Light , under the ownership of Janina , Jasmine 's apprentice. Her Onix was heavily coated in wax for protection against Water attacks.
An Onix, dubbed "King Onix", appeared 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.
An Onix debuted in Shapes of Things to Come , under the ownership of Roark . It was used in his Gym battle against Paul . It battled Elekid before being defeated by Chimchar . It later battled Ash in A Gruff Act to Follow! , where it defeated Turtwig and Pikachu . It was used again during Ash's rematch with Roark in O'er the Rampardos we Watched! , where Pikachu was able to defeat Onix.
A rampaging Onix appeared in A Maze-ing Race! .
Multiple wild Onix appeared in Expedition to Onix Island! , with one of them being Shiny . They were residents of a deserted island , and Ash and his friends wanted to see the Shiny Onix.
An Onix appeared in Breaking Titles at the Chateau! , under the ownership of Grant . It was used at the Battle Chateau in a battle against Viola 's Surskit which Onix was able to win. It appeared again in Climbing the Walls! , where it battled Froakie during a Gym battle against Ash and was defeated.
Minor appearances
A Trainer's Onix appeared in Mewtwo Strikes Back as one of the Pokémon Mewtwo defeated while serving for Giovanni .
Multiple Onix appeared in Showdown at the Po-ké Corral , where they were among the Pokémon living at Professor Oak's Laboratory .
A Trainer's Onix appeared in The Joy of Pokémon , where it was treated by the Nurse Joy of an unnamed island .
An Onix appeared in Meowth Rules! , under the ownership of the Golden Island villagers.
Multiple Onix appeared in The Power of One .
An Onix appeared in a fantasy in The Rivalry Revival .
An Onix appeared in a fantasy in the Fortune Teller book in The Fortune Hunters .
An Onix appeared in a fantasy in Type Casting .
An Onix appeared in Beauty and the Breeder , under the ownership of a Pokémon Breeder participating in a Pokémon breeding competition .
Two Onix appeared in Celebi: The Voice of the Forest . One was under the ownership of a Trainer, while the other appeared during the movie's intro, which was reused for Pokémon Heroes: Latios & Latias .
An Onix appeared in a flashback in Throwing in the Noctowl as one of the Pokémon defeated by Wings Alexander 's then-Hoothoot .
An Onix appeared in the opening sequence of Destiny Deoxys .
Multiple Onix appeared in Lucario and the Mystery of Mew as part of the feuding armies.
An Onix appeared in a fantasy in All That Glitters is Not Golden! , where it evolved into a Steelix .
An Onix made a brief cameo appearance in Pokémon Mystery Dungeon: Explorers of Sky - Beyond Time & Darkness .
An Onix appeared in One Team, Two Team, Red Team, Blue Team! , under the ownership of the Pokémon Summer Academy . Brock used it for the first leg of the Pokémon Triathlon .
An Onix appeared in Steeling Peace of Mind! and Promoting Healthy Tangrowth! .
An Onix appeared in A Rivalry to Gible On! as a resident of Mt. Shady .
An Onix appeared in Bucking the Treasure Trend! , where it attacked Team Rocket .
An Onix appeared in the opening sequence of Zoroark: Master of Illusions .
An Onix appeared in A Pokévision of Things to Come! .
An Onix appeared in Summer of Discovery! on a Pokévision video icon.
An Onix appeared in Volcanion and the Mechanical Marvel .
An Onix appeared in I Choose You! .
A wild Onix appeared in Alola, Kanto! , at Professor Oak's Laboratory . It chased Ash , Brock , Sophocles , and Kiawe after being disturbed by Kiawe's Marowak .
Pokédex entries
Episode
Pokémon
Source
Entry
DP015
Onix
Dawn's Pokédex
Onix, the Rock Snake Pokémon. It tunnels through the ground which shakes when it raises its thunderous roar. It can move the ground at fifty miles per hour.
Episode
Pokémon
Source
Entry
BW087
Onix
Ash's Pokédex
Onix, the Rock Snake Pokémon. By twisting its large and powerful body, Onix can quickly bore through the ground at fifty miles per hour.
Episode
Pokémon
Source
Entry
XY020
Onix
Serena's Pokédex
Onix, the Rock Snake Pokémon. Onix takes an enormous amount of soil to its mouth, creating long tunnels.
In Pokémon Origins
Brock's Onix in Pokémon Origins
Bruno's Onix in Pokémon Origins
Red challenged Brock's Onix after defeating his Geodude . It took out most of Red's team but lost to his Charmander .
Red challenged another Onix belonging to Bruno this time. He battled it with Scyther and won.
In the manga
Onix in The Electric Tale of Pikachu
In the Ash & Pikachu manga
Main article: Brock's Onix
Brock has an Onix in Ash & Pikachu .
In the Electric Tale of Pikachu manga
Main article: Brock's Onix
Brock has an Onix in The Electric Tale of Pikachu .
In the Pokémon Adventures manga
Onix in Pokémon Adventures
Main article: Brock's Onix
Main article: Bruno's Onix
Onix debuts in Onix is On! of the Red, Green & Blue arc as Brock 's main Pokémon, but a picture of it is shown on a leaflet in Wanted: Pikachu! . Onix later continues to make appearances with Brock in various volumes onward.
An Onix appeared as a silhouette when Green talks about Mew in The Jynx Jinx .
Bruno battled a wild Onix in Ponyta Tale with his Hitmonlee.
Bruno owns an Onix, which first appeared in Punching Poliwrath . He battles Bill , Lt. Surge , and Red with it on Cerise Island . Onix later manages to carry Bruno and Koga off the collapsing island.
An Onix appeared in Can You Diglett? in a fantasy when Agatha and Lorelei explains to Red about how Pokémon and people cannot coexist with each other.
A wild Onix was also seen on Cerise Island in Make Way for Magikarp .
An Onix appeared in The Last Battle XIII as one of the Pokémon sent to participate in the fight in Ilex Forest .
Roark has an Onix, which he used during Platinum 's Gym battle in A Conk on Cranidos's Cranium .
A Trainer 's Onix appeared in Clobbering Claydol .
An Onix appeared in Weavile Wobbles But It Won't Fall Down , under the ownership of a Hiker at the Safari Zone .
Pokédex entries
Manga
Chapter
Entry
Pokémon Adventures
PS067
Digs through the earth at up to 50 miles/hour in search of food. The tunnels left behind become a favorite habitat of Diglett .
In the Pocket Monsters HeartGold & SoulSilver Go! Go! Pokéathlon manga
Takashi owns an Onix in Pocket Monsters HeartGold & SoulSilver Go! Go! Pokéathlon .
In the Pokémon Pocket Monsters manga
Main article: Brock's Onix
Main article: Bruno's Onix
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 Red from interfering with his plans on creating Mewtwo in Bring Down the Strongest Pokémon!! .
An Onix is seen with Red during the curry cooking competition that went on in Curry Showdown! Which is the Most Delicious? .
Green 's Onix first appeared in Red VS Green?! .
Bruno owns two Onix as seen in Clefairy's Under Training!! .
In the Pokémon Zensho manga
Main article: Brock's Onix
An Onix under the ownership of Brock appears in Pokémon Zensho .
In the Pokémon Diamond and Pearl Adventure! manga
An Onix appeared in In Search of the Legendary Pokémon Dialga!! , where it started rampaging and had to be battled by Hareta's Piplup and Mitsumi 's Starly . Onix reappeared in a flashback in Hareta's Very First Pokémon Battle!! .
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!! .
An Onix was one of the Pokémon Charon conditioned into a fighting machine in Charon Must Be Stopped! .
In the TCG
Main article: Onix (TCG)
Other appearances
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.
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
Generation I
Kanto #095
Red(ENG)
As it grows, the stone portions of its body harden to become similar to a diamond, but colored black.
Blue
Yellow
Burrows at high speed in search of food. The tunnels it leaves are used as homes by Diglett .
Stadium
Its large body is over 26 feet long. Despite its size, it can squirm its way through the ground at 50 mph .
Generation II
Johto #062
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.
Stadium 2
It twists and squirms through the ground. The thunderous roar of its tunneling echoes a long way.
Generation III
Hoenn #—
Kanto #095
Ruby
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.
Sapphire
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 IV
Sinnoh #034
Johto #062
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 V
Unova B2 W2 : #071
Black
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
White
Black 2
Opening its large mouth, it ingests massive amounts of soil and creates long tunnels.
White 2
Generation VI
Kalos Coastal #053
Hoenn #—
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
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.
Alpha Sapphire
Game locations
In side games
Generation II
This Pokémon is unavailable in Generation II side games.
In events
Held items
Stats
Base stats
Stat
Range
At Lv. 50
At Lv. 100
35
95 - 142
180 - 274
45
45 - 106
85 - 207
160
148 - 233
292 - 460
30
31 - 90
58 - 174
45
45 - 106
85 - 207
70
67 - 134
130 - 262
Total:
385
Other Pokémon with this total
Minimum stats are calculated with 0 EVs , IVs of 0, and (if applicable) a hindering nature .
Maximum stats are calculated with 252 EVs , IVs of 31, and (if applicable) a helpful nature .
This Pokémon's Special base stat in Generation I was 30 .
Pokéathlon stats
Type effectiveness
Under normal battle conditions in Generation IX, this Pokémon is:
Learnset
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 level-up moves from other generations
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
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 level-up moves from other generations
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
Moves marked with an asterisk (*) must be chain bred onto Onix in Generation VII
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
A black or white abbreviation in a colored box indicates that Onix can be tutored the move in that game
A colored abbreviation in a white box indicates that Onix cannot be tutored the move 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 Move Tutor moves from other generations
Special moves
A superscript level indicates that Onix can learn this move normally in Generation VII
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 moves from other generations
Side game data
Evolution
Sprites
Trivia
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 スネーク 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 Rongston
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
Hebrew
אוניקס Oniks
Transcription of English name
Hindi
ऑनिक्स Onix
Transcription of English name
Russian
Оникс Oniks
Transcription of English name
Related articles
Notes
External links
This Pokémon article is part of Project Pokédex , a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.