# Changes: Onix

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Onix
(イワーク Iwaaku)
Artwork General
National Dex: #095
Evolves From: None
Evolves Into: Steelix
Generation: Generation I
Pronunciation: $ON-icks$
Icon(s):
Base Stats Biological Details
HP: 35 Species: Rock Snake Pokémon
Attack: 45 Type(s): Rock/Ground
Defense: 160 Height: 28'10"
Special Atk: 30 Weight: 463.0 lbs.
Special Def: 45 Abilities: Rock Head
Sturdy
Speed: 70 Pokédex Color: Gray
Stat Total: 385 Gender: 50% ♀/50% ♂
Footprint:
Cry:

Onix (Japanese: イワーク Iwaaku) is a Rock/Ground-type Pokémon introduced in Generation I that evolves into Steelix when traded while holding a Metal Coat.

## Appearance

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.

 Brock's Onix facing Pikachu at his gym

## Special abilities

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

## Evolution

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

## In the anime

Brock's Onix

Main Article:"Brock's Steelix"

Brock received Steelix as 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 strongest.

Crystal Onix
Main Article:"Crystal Onix"

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.

## Game info

### Game locations

#### Side game locations

Game(s) Location Onix Locations 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.

## Etymology

Its name comes from "Onyx," a black stone that can be found in jewellery or it comes from the end of the word tectonics.

## Trivia

• Unshō Ishizuka, the actor best known for playing Professor Oak in the original Japanese version of the anime voices both Onix and its evolved form, Steelix in both the Japanese and English-language versions of the anime.