Crystal Onix Snapshot (Pokemon) AI Upscaled by PlatinumShrineArt on DeviantArt

How to find Onix in Pokemon Diamond and Pearl

Let's Play Pokemon: Platinum - Part 26 - Onix & Mt. Coronet

LIVE] Shiny Onix full odds after 6,812 seen

Unexpected Shiny Onix during the grind for the Pokémon League. : r/PokemonHGSS

Pokemon Platinum Waterlocke League Plan + Story by ZoraTheTwilightDrake on DeviantArt

Onix de Crystal & Steelix de - Pokémon Platinum Monotype Steel #02 (Nintendo DS)

Onix - Fusion Strike Pokémon card 138/264

Following the Trend, here's every Pokemon you can get in Pokemon Platinum before the first gym. : r/pokemon

Platinum Necrostevo's Pokéblog

Oneon #95.290 - FusionDex