What is Onix's HP on this card?

This Onix card has 80 HP, providing it with a decent amount of staying power as a Basic Pokémon in play.

What are the energy costs for Onix's attacks?

Rock Throw requires one Fighting energy, and Tunneling requires two Fighting energies and one Colorless energy.

Can Onix attack the turn after using Tunneling?

No, the effect of Tunneling states that Onix cannot attack during your next turn after using this attack.

What is the weakness and resistance for this Onix card?

This Onix card has a Weakness to Grass type Pokémon and no Resistance.

Who illustrated this Onix card?

The artwork for this Onix card was illustrated by Kouki Saitou, known for his dynamic and detailed Pokémon illustrations.

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OnixFirered Leafgreen #42 Pokémon Card

Firered Leafgreen·#42

Onix, the colossal Rock Snake Pokémon, is a dual-type Rock/Ground creature introduced in Generation I, renowned for its immense size and iconic status in the Pokémon franchise. This specific card, from the 2004 EX FireRed & LeafGreen set, is a common variant that stands out for its dynamic artwork and strategic attack mechanics. Here, visitors will find detailed Pokédex lore about Onix, a precise breakdown of its attacks with energy costs, and its weakness, alongside a comprehensive history of this card's edition.

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Card Number: #42
Release Date: August 29, 2004
Language: EN
Set Code: EX06

Onix, the Rock Snake Pokémon, is a colossal creature made of stone and introduced in Generation I. It is a dual-type Rock/Ground Pokémon, renowned for its immense size and powerful drills. Onix's natural habitat is deep underground, where it tunnels through the earth, often creating vast networks of caves. Its diet consists primarily of rocks and soil, which it grinds down to strengthen its already formidable body. Onix's behavior is largely solitary, though it is known to be territorial. In the Pokémon games, Onix is often encountered early on, serving as a memorable challenge for new trainers due to its high defense. Brock, the first Gym Leader in the Kanto region, famously uses an Onix, cementing its iconic status in the anime and games. Its evolution, Steelix, introduced in Generation II, further enhances its defensive capabilities by adding the Steel typing. Onix represents durability and perseverance, a foundational Pokémon in the franchise's lore. Its impressive stature and unique composition make it a distinct figure in the Pokémon world, symbolizing the raw power of the earth.

Last updated: April 10, 2026