So I really wish this had been a mega evolution : r/pokemon

What is Onix's evolution chart? - Quora

Shiny mega Pokémon

Mega Crystal Steelix, Pokemon Wack Wiki

Steelix (Pokémon) - The Pokemon Insurgence Wiki

Mega Steelix, Pokédex

Pokemon Go - NEW Evolves! Start saving candy MEGA ONIX and 5 other EPIC evolves

Every time a Pokemon is Mega evolved, its regular Pokedex entry # Seen goes up by 1 but Caught stays the same. : r/TheSilphRoad

Elite Trainer Mark on X: Onix was Brock's first ever Pokémon. However, it didn't even evolve under his ownership, it evolved into Steelix while his brother Forrest was taking care of it.

RUMOR: Let's Go! to Add New Mega Evolutions

which onix do I evolve and should I purify the one for a hundo mega steelix (for raids only btw) : r/pokemongo