Onix

Base#56Common

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Attacks

Rock Throw

Damage

Harden

During your opponent's next turn, whenever 30 or less damage is done to Onix (after applying Weakness and Resistance), prevent that damage. (Any other effects of attacks still happen.)

As it grows, the stone portions of its body harden to become similar to a diamond, though colored black.

Details

Supertype

Pokémon

Subtypes

Basic

Types

Fighting

Weaknesses

Grass×2

Retreat Cost

Colorless

Regulation Mark

None

Artist

Ken Sugimori

Legality

Standard: Not legal
No regulation mark
Expanded: Not legal
Released before the Black & White Series
Gym Leader Challenge: Not legal
Released before the Black & White Series
Unlimited: Legal

Market price

Graded prices

PSA 10

$140

Normal / eBay / updated Sep 21, 2026

PSA 9

$38.50

Normal / eBay / updated Sep 28, 2026

CGC 10

$73.99

Normal / eBay / updated Sep 16, 2026

CGC 9

$20.00

Normal / eBay / updated Oct 5, 2026

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