Wikia

Type(s)

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
イワーク Iwaaku

Generation I
Evolutionary Line

Gender
50% ♂ / 50 % ♀
Weight		Height
463.0 lbs.	210.5 kg	28'10"	8.8 m
Pokédex Color		Egg Group
Gray		Mineral
Body Style		Footprint

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
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
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.

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

Anime

Main articles: Brock's Onix and Crystal Onix

Brock received an Onix from his father, Flint, on his 10^th birthday, as seen in a flashback in Having a Wailord of a Time . Onix was Brock's 1^st 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.