OnixStormfront #69 Pokémon Card

Onix, the Rock Snake Pokémon, is a colossal creature introduced in Generation I, known for its immense size and strength. It is a dual Rock/Ground-type, making it susceptible to Water, Grass, Ice, Fighting, Steel, and Ground-type attacks, but resistant to Fire, Electric, Flying, Poison, and Rock. Onix is typically found deep underground, burrowing through the earth at high speeds, and its movements are often associated with seismic activity. In the games, Onix evolves into Steelix when traded holding a Metal Coat, gaining a Steel typing and further enhancing its defensive capabilities. Onix played a memorable role in the anime as Brock's signature Pokémon, often being the first Pokémon he sent out to battle, showcasing its formidable appearance and defensive prowess. Its imposing presence and association with a beloved gym leader have cemented its place in Pokémon lore, symbolizing endurance and raw power. Its diet consists of rocks and soil, which it grinds down to strengthen its body, and it uses its hardened form to navigate through the earth's crust.