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Onix

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Type(s)
Type Rock  Type Ground
Species Rock Snake Pokémon
Abilities Rock Head
Sturdy
Weak Armor (DW)
Pokédex
Gengar ← 095 → Drowzee
Kanto 095 Johto 062
Hoenn N/A Sinnoh 034
Unova 071 Central Kalos 053
Evolves From None
Evolves Into Steelix
Onix
095
イワーク Iwaaku
095Onix
Generation I
Evolutionary Line
095208208M
Gender
50% ♂ / 50 % ♀
Weight Height
463.0 lbs. 210.5 kg 28'10" 8.5 m
Pokédex Color Egg Group
Gray Mineral
Body Style Footprint
Body02
F095
Cry

Onix (Japanese: イワーク Iwaaku) is a Rock/Ground-type Pokémon introduced in Generation I.

Biology

Physiology

Onix is a Rock Snake Pokémon. Its serpentine body is made up of large boulders and little pebbles. It has a long horn atop its head and small eyes.

Special abilities

Onix can have the abilities Rock Head or Sturdy. Rock Head prevents Onix from recoiling, while Sturdy gives Onix immunity to OHKO moves . When it is burrowing underground, it can cause rumbles and earthquakes. It can dig at speeds up to 50 MPH. It has a compass in its brain that can tell Onix what direction it is facing.

Evolution

Onix evolves into Steelix when traded while holding a Metal Coat.

Game info

Game locations

Onix Locations
Version(s) Location Rarity
Red/Blue Rock Tunnel, Victory Road Common
Yellow Rock Tunnel, Victory Road Uncommon
Gold/Silver Rock Tunnel, Violet City, (trade Bellsprout), Mt. Silver, Victory Road, Union Cave Common
Crystal Rock Tunnel, Violet City, (trade Bellsprout), Mt. Silver, Victory Road, Union Cave Common
Ruby/Sapphire Trade None
Emerald Trade None
FireRed/LeafGreen Victory Road, Rock Tunnel, and Sevault Canyon Common
Diamond/Pearl Iron Island, Snowpoint Temple, Oreburgh Mine, Victory Road, Stark Mountain Common
Platinum Iron Island, Oreburgh Mine, Victory Road, Wayward Cave Common
HeartGold/SoulSilver Violet City (trade Bellsprout), Union Cave, Mt. Silver, Ragged Cliff Gate, Victory Road, Rock Tunnel Common
Black/White Relic Castle Rare
X/Y Glittering Cave Uncommon


Side game locations

Onix Locations
Game(s) Location
Pokémon Trozei! Phobos Drill, Endless Level 46, Forever Level 23, Mr. Who's Den
Red Rescue Team & Blue Rescue Team Magma Cavern (21F-23F), Magma Cavern Pit (1F-2F), Southern Cavern (40F-50F)
Explorers of Time & Explorers of Darkness Mt. Travail (1F-19F)


Pokédex entries

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 Diglett.
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.
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
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.
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.
Black
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
White
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
Black 2
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
White 2
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
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

Sprites

Version
Red Blue Yellow Red (JP) Green (JP) Back
Gold Silver Crystal Back
Ruby Sapphire Emerald FireRed LeafGreen Back
Diamond Pearl Platinum HeartGold SoulSilver Back
Black White Black 2 White 2 Back
X Y Omega Ruby Alpha Sapphire Back

Appearances

In the anime

IL005- Showdown in Pewter City 13

Brock's Steelix as an Onix

Crystal Onix

The Crystal Onix

Main articles: Brock's Onix and Crystal Onix

Brock received an Onix from his father, Flint, on his 10th birthday, as seen in a flashback in Having a Wailord of a Time . Onix was Brock's 1st Pokémon and has consistently been his most powerful Pokemon as well.

The Crystal Onix's first and only appearance is in the anime episode The Crystal Onix. Ash and his friends first heard of it through a note they found in a bottle floating in the ocean. The note was written by a little girl named Marissa. She wanted to find the Crystal Onix to help her brother, Mateo, gain inspiration to make glass Pokémon statues. Mateo told a story of how his grandfather discovered the Crystal Onix and then was able to make extraordinary sculptures afterwards. One of those sculptures included the Crystal Onix itself.

Gallery

Trivia

Etymology

Its name comes from "Onyx," a black stone that is commonly used in jewelry.

Sources


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