Aron evolves into Lairon starting at level 32. On Pokemon Sapphire version, Aron can be found and caught in locations Granite Cave Floor South 1, South and Basements 1 and 2 and Victory Floor 1.
Aron is a common Steel/Rock type Pokemon on Sapphire. Its name is derived from a combination of the words armor and iron. Named Kokodora in Japanese, Aron is entry number 304 on the National Pokedex and is number 070 on Hoenn. Aron has a catch rate of 23.5 percent using the Pokeball.
The Aron Pokemon has a total base stat of 330 with 50 HP, 100 Defense, 70 Attack, 40 Special Attack, 40 Special Defense and 30 Speed. Its special abilities are Rock Head, which makes this Pokemon impervious to recoil damage; Sturdy, which makes it impervious to one-hit knockout moves and a hidden ability called Heavy Metal.
The Pokedex entry for Aron on Pokemon Sapphire version reads, "ARON has a body of steel. With one all-out charge, this Pokemon can demolish even a heavy dump truck. The destroyed dump truck becomes a handy meal for the Pokemon." Aron is weak against Fighting, Ground and Water-type Pokemon. It has strong resistance to Normal, Flying, Rock, Bug, Psychic, Ice, Dragon and Fairy-type Pokemon and is immune to Poison-type Pokemon.