Steelix

Steelix is a formidable Steel/Ground-type Pokémon, introduced in Generation II as the evolved form of Onix when traded holding a Metal Coat. Its immense size and rock-hard, metallic body make it a truly imposing sight. Steelix typically inhabits deep underground caves and tunnels, constantly burrowing through the earth, which hardens its body to an incredible degree. Its diet primarily consists of rocks and minerals, which further contribute to its metallic composition and durability. In the games, Steelix is known for its high Defense stat, making it a reliable tank. In the anime, it has been featured prominently, notably as Brock's powerful companion. Its design, reminiscent of a giant metal serpent, has cemented its place as a fan-favorite, symbolizing resilience and strength in the Pokémon world. As a Steel type, it boasts numerous resistances, making it a strategic asset in battles, while its Ground typing provides offensive coverage against Electric and Fire types.