Pokémon Platinum: Beating the Sinnoh Gym Leaders - HubPages

Who decided that Onix should have a ridicuously difficult catch rate?

Curse Onix is the best strat vs Roark in Renegade Platinum and you can not convince me otherwise. : r/nuzlocke

Pokemon Platinum :: Full Walkthrough

Pokémon Adventures: Diamond and Pearl/Platinum, Vol. 8, Book by Hidenori Kusaka, Satoshi Yamamoto, Official Publisher Page

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Oreburgh Mine - Bulbapedia, the community-driven Pokémon encyclopedia

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Pokemon 6095 Shiny Crystal Onix Pokedex: Evolution, Moves, Location, Stats