Pokémon Omega Ruby and Alpha Sapphire add Mega-Evolutions for Steelix, Glalie - Polygon

Pokemon 95 Onix Pokedex: Evolution, Moves, Location, Stats

Pokémon GO - Mega Evolution

Onix (Pokémon GO) - Best Movesets, Counters, Evolutions and CP

Pokemon 8208 Mega Steelix Pokedex: Evolution, Moves, Location, Stats

STL file onix evolutions 🐉・3D printable model to download・Cults

I wish this could be real : r/pokemon

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 •

Steelix's mega energy counter is now displayed for that evolution line. : r/TheSilphRoad

Which Pokémon needs a mega evolution? - Quora