| ||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||
|
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.
Natural 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
Locations | |||||||||
---|---|---|---|---|---|---|---|---|---|
Version(s) | Area(s) | 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 | |||||||
Sun/Moon | Transfer | None |
Side game locations
Locations | |
Game(s) | Area(s) |
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. | |
Sun | |
Moon | |
Ultra Sun | |
Ultra Moon | |
Stats
Base Stats | |
---|---|
HP | |
Attack | |
Defense | |
Sp. Atk | |
Sp. Def | |
Speed | |
Total | 385
|
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 | GO | Back | ||||
![]() | ![]() | ![]() | |||||||
![]() | ![]() | ||||||||
Sun | Moon | Ultra Sun | Ultra Moon | Back | |||||
Appearances
Anime

Brock's Steelix as an Onix
- Main articles: Brock's Onix and Onix (OI007)
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 first Pokémon and has consistently been his most powerful Pokémon as well. Brock uses this in some occasions during his travels with Ash and Misty. In Pokémon Chronicles, Brock uses Onix for the last time to battle against his ditsy mother, Lola who is responsible for remodeling the Gym and her Mantine to put the Gym back to its former glory. Brock lent his Onix to his younger brother, Forrest until it evolves into Steelix in Grating Spaces! to his care.
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. In the Best Wishes series during the episode of, Expedition to Onix Island!, a shiny Onix is the leader of several normal Onix in the Onix Island. When Ash and his group are chased by most of the normal Onix, Meloetta did her best to sing her song to calm them down but its no effect until a shiny Onix loudly roars to stop them which causes all of the normal Onix leave and allowing Ash and the group to see its shiny Onix before leaving back to Cynthia's resthouse.
The most powerful Onix after both Brock and Roark was Grant's Onix which it was seen in his battle against Viola's Surskit at the Battle Chateau and its Gym battle against Ash's Froakie by trapping its opponents using Rock Tomb.
Trivia
- Onix is the tallest Pokémon that is capable of evolution.
Etymology
Its name comes from "Onyx," a black stone that is commonly used in jewelry.
Gallery
See also
- Pokémon.com Pokédex
- Legendary Pokémon data
- The Pokémon Database
- Pokémon Dream Pokédex data
- Psypokes Psydex data
Generation I Pokémon | |
---|---|
Other Pokémon: Johto • Hoenn • Sinnoh • Unova • Kalos • Alola |
Evolutionary Line | |
---|---|