Onix

Onix is a Rock/Ground type Pokémon introduced in Generation 1. It is known as the Rock Snake Pokémon.

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 DIGLETTs.
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
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.
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.
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.
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
White
It burrows through the ground at a speed of 50 mph while feeding on large boulders.
Black 2
White 2
Opening its large mouth, it ingests massive amounts of soil and creates long tunnels.
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
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.

Evolution chart

Onix
#095
Onix
Rock · Ground

(trade holding
Metal Coat)
Steelix
#208
Steelix
Steel · Ground

Name origin

onyx
a type of rock

Moves learned by Onix

Onix sprites

Type Generation 1 Generation 2 Generation 3 Generation 4 Generation 5 Generation 6 Generation 7
Normal Onix  sprite from Red & Blue Onix  sprite from Silver Onix  sprite from Ruby & Sapphire Onix  sprite from Diamond & Pearl Onix  sprite from Black & White Onix  sprite from X & Y
Shiny Onix Shiny sprite from Silver Onix Shiny sprite from Ruby & Sapphire Onix Shiny sprite from Diamond & Pearl Onix Shiny sprite from Black & White Onix Shiny sprite from X & Y

See all Onix sprites

Where to find Onix

Red
Blue
Yellow
Trade/migrate from another game
Gold
Silver
Mt. Silver, Rock Tunnel, Union Cave, Violet City
Crystal Violet City
Ruby
Sapphire
Trade/migrate from another game
FireRed
LeafGreen
Rock Tunnel, Seavault Canyon
Emerald Trade/migrate from another game
Diamond
Pearl
Iron Island, Oreburgh Mine, Snowpoint Temple, Stark Mountain, Victory Road
Platinum Iron Island, Oreburgh Mine, Victory Road, Wayward Cave
HeartGold
SoulSilver
Cliff Cave, Mt. Silver, Rock Tunnel, Union Cave, Violet City
Black
White
Relic Castle
Black 2
White 2
Twist Mountain, Victory Road, Clay Tunnel, Relic Passage, Underground Ruins
X Cyllage City, Glittering Cave
Y Glittering Cave
Omega Ruby
Alpha Sapphire
Granite Cave, Mirage Spots
Sun
Moon
Data not available yet.