Onix (Pokémon)
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Type
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Abilities
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Gender ratio
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Catch rate
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Breeding
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Height
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Weight
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Base experience yield
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Leveling rate
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EV yield
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Shape
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Footprint
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Pokédex color
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Base friendship
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Onix (Japanese: イワーク Iwark) is a dual-type Rock/Ground Pokémon introduced in Generation I.
It evolves into Steelix when traded while holding a Metal Coat.
(Specifics may differ in past games. Refer to Game data→Evolution data for more details).
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, guiding Onix wherever they need to go and prevents them from getting lost while digging.
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 Pokémon the Series episode To Master the Onixpected!. As seen in the Pokémon Adventures manga, Onix can be separated from its body segments in battle and be fine later on, either regenerating or reattaching to its body segments.[1] It is said that an Onix that lives for about 100 years will evolve into a Steelix after its composition becomes more diamond-like. It can be found in mountains and caves. As mentioned in Pokémon Sleep, Onix is known on occasion to sleep while in the middle of digging through tunnels.[2] Onix is believed to be a deep sleeper due to the protection offered by its sturdy body.
Evolution
Onix evolves into Steelix.
(For specifics on this Pokémon's Evolution in the games, refer to Game data→Evolution data.)
Game data
Pokédex entries
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Game locations
In side games
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In events
| Games | Event | Language | Location | Level | Distribution period |
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| GSC | Gotta Catch 'Em All Station! Sharpen Onix | English | United States | 5 | November 8 to 14, 2002; December 13 to 19, 2002 |
Wild Area News
| Games | Event | Gigantamax | Level | Distribution period |
|---|---|---|---|---|
| SwSh | Wild Area News | No | 17, 30, 40, 50, 60 | June 30 to July 31, 2020 |
Held items
Pokémon caught in Generation I must be traded to a Generation II game in order for a held item to appear.
| Games | Held items | |
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| Red | Blue |  Bitter Berry (100%) |
| Yellow | ||
| Gold | Silver | |
| Crystal | ||
| FireRed | LeafGreen |  Hard Stone (5%) |
| HeartGold | SoulSilver | |
| Legends: Arceus | ||
Stats
Base stats
| Stat | Range | ||
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| At Lv. 50 | At Lv. 100 | ||
HP: 35
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95 - 142 | 180 - 274 | |
45
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45 - 106 | 85 - 207 | |
160
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148 - 233 | 292 - 460 | |
30
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31 - 90 | 58 - 174 | |
45
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45 - 106 | 85 - 207 | |
70
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67 - 134 | 130 - 262 | |
Total: 385
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Pokéathlon stats
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Type effectiveness
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Learnset
Onix is available in Legends Z-A.
By leveling up
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By TM
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Animated series-only moves
| Move | Type | Episode |
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| Wrap | Normal | Fight for the Light! |
Side game data
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Evolution data
Onix evolves into Steelix when traded while holding a Metal Coat. Onix cannot evolve into Steelix in Pokémon FireRed and LeafGreen before the player obtains the National Pokédex, as its Evolution will be interrupted. Onix also cannot evolve into Steelix in Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, as Steelix is not present in those games. In Pokémon Legends: Arceus, Onix evolves into Steelix when exposed to a Metal Coat.
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Sprites
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| This Pokémon is unavailable in Generation IX. | ||||||||||||||||||||||||||||||||||||
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For other sprites and images, please see Onix images on the Bulbagarden Archives.
Other sprites
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| Flex in Pokémon Super Contests | Gem in Pokémon Super Contests |
In animation
Main series
Major appearances
Brock's Onix
Starting in Showdown in Pewter City, Brock used an Onix 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.
Bruno's Onix
In To Master the Onixpected, Ash and his friends encountered a giant Onix. It was on a rampage until Bruno managed to pull a Sandslash out from two of its boulders. Bruno captured the Onix afterwards.
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
Onix debuted in Pokémon - I Choose You!, where it was used as the next Pokémon that a Trainer chose after his opponent's Gengar put their Nidorino to sleep with Hypnosis.
In Hello, Pummelo!, Drake used an Onix in the second round in the Orange League championship match against Ash. It battled Squirtle and was defeated.
In Tunnel Vision, multiple Onix were living in Onix Tunnel. They 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.
In Fight for the Light, Janina coated her Onix 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.
In Shapes of Things to Come, Roark used an Onix during his Gym battle against Paul. It went up against his Elekid before being defeated by Chimchar. In A Gruff Act to Follow!, it battled Ash and defeated his Turtwig and Pikachu. In O'er the Rampardos we Watched!, during Ash's rematch with Roark, Pikachu was able to defeat Onix.
In A Maze-ing Race!, an Onix rampaged around until it was forced to retreat.
In Expedition to Onix Island!, multiple Onix, including a Shiny one, lived on a deserted island. Ash and his friends went there to see the Shiny Onix.
In Breaking Titles at the Chateau!, Grant used an Onix at the Battle Chateau in a battle against Viola's Surskit, which Onix won. In Climbing the Walls!, Onix battled Froakie during a Gym battle against Ash and was defeated.
In Caring for a Mystery!, an Onix battled a wild Riolu after it accidentally climbed up on it. Ash later showed up with his Pikachu and helped save Riolu from Onix. After that, Ash and Riolu battled Onix until it fled. It reappeared in a flashback in An Adventure of Mega Proportions!.
Minor appearances
An Onix appeared in a fantasy in Dig Those Diglett!.
In Mewtwo Strikes Back and Mewtwo Strikes Back—Evolution, a Trainer's Onix was defeated by Mewtwo while it was serving Giovanni at the Viridian Gym.
In Showdown at the Po-ké Corral, multiple Onix were living at Professor Oak's Laboratory.
In The Joy of Pokémon, a Trainer's Onix was treated by the Nurse Joy of an unnamed island.
In Meowth Rules!, the Golden Island villagers had an Onix.
In The Power of One, multiple Onix sensed the disturbance caused by Lawrence III.
An Onix appeared in a fantasy in The Rivalry Revival.
In The Fortune Hunters, an Onix was depicted in the Fortune Teller book.
An Onix appeared in a fantasy in Type Casting.
In Beauty and the Breeder, a Pokémon Breeder's Onix participated in the Pokémon Beauty Contest.
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.
In a flashback in Throwing in the Noctowl, an Onix was defeated by Wings Alexander's then-Hoothoot.
An Onix appeared in the opening sequence of Destiny Deoxys.
In Lucario and the Mystery of Mew, multiple Onix were part of the feuding armies that were eventually placated by Sir Aaron in the past.
In All That Glitters is Not Golden!, an Onix evolved into a Steelix in a fantasy.
An Onix appeared in Pokémon Mystery Dungeon: Explorers of Sky - Beyond Time & Darkness.
In One Team, Two Team, Red Team, Blue Team!, Brock used an Onix provided by the Pokémon Summer Academy for the first leg of the Pokémon Triathlon.
An Onix appeared in Steeling Peace of Mind!.
An Onix appeared in Promoting Healthy Tangrowth!.
In A Rivalry to Gible On!, an Onix lived on Mt. Shady.
In Bucking the Treasure Trend!, an Onix 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!.
In Alola, Kanto!, an Onix chased Ash, Brock, Sophocles, and Kiawe at Professor Oak's Laboratory after being disturbed by Kiawe's Marowak.
In Raid Battle in The Ruins!, a Shiny Onix was part of Shane Seeker's Shiny Pokémon collection, as shown in his Pokédex.
An Onix appeared in a fantasy in A Chilling Curse!. However, this fantasy was removed in the dub, as it was used as part of an untranslatable Japanese wordplay.
In Advice to Goh!, Goh attempted to catch an Onix, but failed. The Onix was then quickly driven away by Gary's Blastoise, before it could attack Goh.
An Onix appeared in This Could be the Start of Something Big!.
An Onix appeared in Distant Blue Sky!.
Three Onix appeared in The Pendant That Starts It All (Part One).
An Onix appeared in As Long as I'm with My Friends.
Pokédex entries
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Pokémon Origins
Brock's Onix
In File 1: Red, Red challenged Brock's Onix after defeating his Geodude. It took out most of Red's team but lost to his Charmander.
Bruno's Onix
In File 4: Charizard, Red challenged another Onix belonging to Bruno at the Pokémon League. He battled it with Scyther and won.
Pokémon Masters Animated Trailer
Brock's Onix
In the Pokémon Masters Animated Trailer, Brock's Onix accompanied him, Scottie, and Rosa on a journey across Pasio.
GOTCHA!
Brock's Onix
An Onix briefly appeared in GOTCHA!, under the ownership of Brock.
Pokémon Evolutions
In The Show, an Onix briefly appeared under the ownership of a Trainer in Ecruteak City.
In the manga
Ash & Pikachu
- Main article: Brock's Onix
Brock has an Onix in Ash & Pikachu.
The Electric Tale of Pikachu
- Main article: Brock's Onix
Brock has an Onix in The Electric Tale of Pikachu.
Magical Pokémon Journey
An Onix appeared in Adventuring the Stone. It returned in The Unbearable Suspense of Hide-and-Seek! as the rumored "monster" of the caves.
Pokémon Journeys
An Onix appeared in Caring for a Mystery!.
Pocket Monsters Diamond & Pearl
An Onix appeared in PDP12.
Pocket Monsters HeartGold & SoulSilver Go! Go! Pokéathlon
Takashi owns an Onix in Pocket Monsters HeartGold & SoulSilver Go! Go! Pokéathlon.
Pocket Monsters HGSS Jō's Big Adventure
- Main article: Brock's Onix
Brock's Onix only appeared as a silhouette in JBA5 along with its Trainer and the other Kanto Gym Leaders.
Pocket Monsters Platinum: Aim to Be Battle King!!
An Onix appeared in PBK1.
An Onix appeared in PBK2.
Pokémon Adventures
- Main article: Brock's Onix
- Main article: Bruno's Onix
Onix debuted in Onix is On! as Brock's main Pokémon, but a picture of it was shown on a leaflet in Wanted: Pikachu!. Onix later continued 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 battled Bill, Lt. Surge, and Red with it on Cerise Island. Onix later managed to carry Bruno and Koga off the collapsing island.
An Onix appeared in Can You Diglett? in a fantasy when Agatha and Lorelei explained to Red about how Pokémon and people cannot coexist with each other.
A wild Onix was 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.
A wild Onix appeared in the Wild Area in Zap!! A Rising Beam of Light.
Pokédex entries
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Pokémon Diamond and Pearl Adventure!
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 caught 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!.
Pokémon: Yeah! I Got Pokémon!
An Onix appeared in The Challenge at Celadon University!.
An Onix appeared in GDZ46, under the ownership of Shu's mother.
An Onix appeared in GDZ51.
Pokémon Pocket Monsters
- Main article: Brock's Onix
- Main article: Bruno's Onix
Brock owns an Onix, which debuted in Bring Down the Powerful Opponent Onix!!.
An Onix appeared in The Legendary Pokémon Appears!!.
An Onix appeared in Aim to be the No. 1 Pokémon!.
An Onix appeared in Good Luck at the Big Pokémon Athletic Meet!.
An Onix appeared in Fierce Competition at the Pokémon Baseball Tournament!, where it was one of the Pokémon that took part in a baseball match.
Giovanni sent out his Onix to prevent Red from interfering with his plans on creating Mewtwo in Bring Down the Strongest Pokémon!!. It reappeared in Good-Bye, Pikachu?!.
An Onix appeared in Curry Showdown! Which is the Most Delicious? as one of the participants of a curry cooking competition.
An Onix appeared in Seize the Dream of One Million Yen!!.
Green's Onix first appeared in Red VS Green?!.
Bruno owns two Onix, both of whom debuted in Clefairy's Under Training!!.
An Onix appeared in I Want to Become Popular!!, under the ownership of a boy.
Professor Oak owns an Onix, which debuted in Save the Pokémon Zoo!!.
Pokémon Zensho
- Main article: Brock's Onix
An Onix appeared in PZ02, under the ownership of Brock.
In the TCG
- Main article: Onix (TCG)
Other appearances
Super Smash Bros.
Onix can be summoned via 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
In the Poké Floats stage, 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.
Trivia
- Onix is the heaviest and tallest unevolved Pokémon.
- Onix is the only unevolved Pokémon that is used in the Pokémon World Tournament by Trainers beyond the right attendant, being used in all of Brock's teams.
- The Onix line is the only multi-stage evolutionary line which can be completely acquired with in-game trades. However, this is only possible in Pokémon HeartGold and SoulSilver, in which the player can trade Bellsprout for Onix in Violet City, and any Pokémon for Steelix in Olivine City.
- The Lagging Tail held item resembles the end of Onix's tail.
- Onix is the only Gigantic Pokémon that can evolve.
- Onix has the highest base Defense stat of all Pokémon that can still evolve.
Origin
Onix's design may be a visual pun on a rock python or an earthworm. Its great size could have been inspired by the Mongolian death worm, an earthworm-like creature noted for its colossal length (compared to regular worms) of up to 7 feet (2 meters). Its ability to learn Dragon Breath naturally implies its origin as some kind of limbless dragon, like the Lindworm. The Onix lifestyle, living underground and ingesting massive amounts of soil while tunneling, is much closer to that of an earthworm than a snake.
Name origin
Onix may be derived from onyx (a mineral).
Iwark may be a combination of 岩 iwa (rock) and either ブルワーク bulwark or スネーク snake.
In other languages
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See also
References
External links
Pokémon Trainer (Squirtle • Ivysaur • Charizard) • Lucario • Greninja • Incineroar
Bellossom • Bewear • Blastoise • Bonsly • Celebi • Chansey • Charizard • Chespin • Chikorita • Clefairy
Cyndaquil • Darkrai • Dedenne • Deoxys • Ditto • Eevee • Electrode • Entei • Fennekin
Fletchling • Gardevoir • Genesect • Giratina • Gogoat • Goldeen • Groudon • Gulpin • Hitmonlee
Ho-Oh • Inkay • Jirachi • Keldeo • Koffing • Kyogre • Kyurem • Latias and Latios
Lugia • Lunala • Manaphy • Marill • Marshadow • Meloetta • Meowth • Mew • Metagross • Mimikyu
Moltres • Munchlax • Onix • Oshawott • Palkia • Piplup • Porygon2 • Pyukumuku • Raikou • Scizor • Snivy
Snorlax • Solgaleo • Spewpa • Staryu • Starmie • Suicune • Swirlix • Tapu Koko • Togedemaru • Togepi
Torchic • Unown • Venusaur • Victini • Vulpix • Weavile • Weezing • Wobbuffet • Xerneas • Zapdos • Zoroark
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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. |
- Pokémon
- Generation I Pokémon
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