Crystal Onix

This article is about the Pokémon. For the episode of the anime, see EP087.

Crystal Onix
クリスタルのイワーク Crystal Iwark
Crystal Onix.png
The Crystal Onix
Debuts in The Crystal Onix
Gender Unknown
Ability Unknown
Current location Sunburst Island
This Pokémon has not evolved.
Voice actor Japanese English
As Onix Unshō Ishizuka

The Crystal Onix (Japanese: クリスタルのイワーク Crystal Iwark) is a special Onix with a body made out of glass crystal.


The Crystal Onix appeared in 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.

With the help of Marill, Tracey was able to assist greatly in finding the Crystal Onix's hideout.

Besides being made of crystal, the Crystal Onix is also unique from other Onix in that it can live in water without being hurt by it. Its glass skin also gives it a special resistance to Water-type attacks. Mateo realized that he would have to use a different type of attack to weaken it and so, he used his Charmeleon and attacked it with Fire Spin. It seemed to have a weakness to Fire-type attacks, unlike other Onix. Mateo was just about to capture it when he realized that he didn't need to. Just battling it gave him the inspiration he needed to create glass Pokémon sculptures. He thanked the Crystal Onix as it submerged itself into the water once more.

Personality and characteristics

Due to its brief appearance and screentime, not much is known of the Crystal Onix's personality. Unlike other Onix, it doesn't hate water and was, in fact, first seen swimming in a pool.

Moves used

Using Tackle
Move First Used In
Tackle The Crystal Onix
Rock Throw The Crystal Onix
A shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.

Related articles

For more information on this Pokémon's species, see Onix.

Pokémon forms and variants
Permanent: Shiny Pokémon (GO) • Alternately colored Pokémon (anime)
Gender differences‎Form differences (GO)
Brilliant PokémonAlpha Pokémon
Transformations: Mega EvolutionPrimal ReversionBond PhenomenonUltra Burst
Dynamax (Gigantamax) • EternamaxTerastal phenomenon
Groups: Totem PokémonNoble PokémonTitan Pokémon
Regional forms: AlolanGalarianHisuianPaldean
Analogous: Paradox PokémonEcologically similar Pokémon
Pikachu variants: Surfing PikachuFlying PikachuCosplay PikachuPikachu in a cap
Miscellaneous: Pokémon fusionsGiant PokémonSpiky-eared PichuPartner Pokémon
Side series original: Shadow PokémonShadow Lugia
Spin-off original: Shadow PokémonPrimal DialgaToy Pokémon (Rusty Pokémon)
Shadow MewtwoPokéxelIllumina phenomenon
Anime original: Pink ButterfreeClone PokémonCrystal Onix
Mirage PokémonMeta GroudonGreen-crystal Deoxys
Manga original: Thu-Fi-ZerBlack FogBlack Tyranitar

  This article is part of Project COD, a Bulbapedia project that aims to write comprehensive articles on each one-time character of the Pokémon anime.