Steedra #208.117 - FusionDex

Pokemon Platinum – Game Notes

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

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

Pokémon Platinum Nuzlocke Chapter 5

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

Pokemon Platinum Waterlocke League Plan + Story by ZoraTheTwilightDrake on DeviantArt

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

Onix 61/108 (NM, Pokemon Card, Evolutions, 2016, Fighting, Common)

Onix - Pokedex Guide - IGN

Oneon #95.290 - FusionDex