What is Onix's evolution chart? - Quora

Answer (1 of 5): The Pokemon Onix evolves into one Pokemon called Steelix. A Steelix can also Mega evolve and change its apperance along with stats and effect. You evolve a Onix to a Steelix by trading it to someone while the Onix is holding the item, Metal coat. You will need to trade back for y

Soilix Onix Pre Evolution by Hyperagua on DeviantArt, onix pokemon evolution

Onix Evolves into Steelix! - Pokemon Evolution Animation , onix pokemon evolution

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9 Ways to Evolve Onix - wikiHow

Soilix Onix Pre Evolution by Hyperagua on DeviantArt, pokemon onix evolution

Soilix Onix Pre Evolution by Hyperagua on DeviantArt, onix pokemon evolution

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Onix, Pokémon Wiki

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Onix, Pokémon Wiki