Countering Mega Steelix in Pokemon GO

Mega Evolution - Bulbapedia, the community-driven Pokémon encyclopedia

Shiny mega Pokémon

Onix (Pokémon GO): Stats, Moves, Counters, Evolution

Mega Construx Pokemon Onix Master Battle

Mega Crystal Steelix, Pokemon Wack Wiki

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.

Pokémon Sword & Shield Pokédex •

Pokemon Mega Construx Onix Master Battle Set

Pokemon GO Mega Steelix raid guide: Best counters, weaknesses, and more

Onix (Pokémon) - Bulbapedia, the community-driven Pokémon encyclopedia