Unleashed·#56·2010
Onix, the colossal Rock Snake Pokémon, is a Ground/Rock type creature introduced in Generation I, renowned for its immense size and role in the anime as Brock's signature Pokémon, cementing its cultural significance. This specific Onix card, number 56 from the 2010 Unleashed set, is a common variant that stands out for its unique self-healing Poké-BODY ability. Here, you'll discover Onix's Pokédex lore, the card's attacks, energy costs, weakness, and its place in TCG history.
Read more ↓Onix, the Rock Snake Pokémon, is a colossal creature first introduced in Generation I of the Pokémon franchise. This Ground/Rock type Pokémon is renowned for its immense size and strength, often depicted as a serpentine being composed of numerous boulders. Its natural habitat includes underground tunnels, caves, and mountainous regions, where it carves out vast networks of passages. Onix is known to consume large quantities of earth and rocks, which contribute to its hardened body and continuous growth. In the games, Onix evolves into Steelix when traded while holding a Metal Coat, gaining the Steel typing and further enhancing its defensive capabilities. Onix played a memorable role in the Pokémon anime as Brock's signature Pokémon, often utilized for its powerful Rock-type attacks and sturdy defense, making it a fan favorite. Its imposing appearance and connection to one of the original gym leaders solidify its cultural significance as one of the most iconic Rock-type Pokémon. Onix's design, inspired by earth and geological formations, positions it as a foundational creature in the Pokémon universe, embodying the raw power of the earth itself.
Last updated: April 10, 2026
