In commemoration of Nintendo’s 135ᵗʰ anniversary, September 20 to 30 is NIWA Cross-Wiki Week. Click here for event details and the possibility to win a $20/€20 Nintendo eShop gift card. Please remember to follow the manual of style and code of conduct at all times. Check the Bulbagarden home page for up-to-date Pokémon news and discuss it on the forums or in the Bulbagarden Discord server.
Lairon has a stocky, armored, quadruped build. Its body is a dark gray and its eyes are sky blue. Its back is covered with segments of iron armor, each with a high ridge and round dark holes on the sides. The sides of Lairon’s lower jaw have several flat protrusions and two teeth are visible in its mouth. There are two pronged metal bands on Lairon's legs. The upper is gray, and the lower is iron-colored.
Lairon feeds on iron contained in rocks and water, and drinks mineral spring water until it is bloated, as it has been said doing so tempers its steel body. Lairon makes its nests near such mineral springs, on mountains where iron ore is buried. Due to its nesting preferences, this may cause it to clash with humans attempting to mine the ore.
Lairon are also known to show off their strength when they bash into rocks, with the sparks being released seemingly showing their strength. When two Lairon meet each other, they may fight for territory by bashing into each other.
Rono, Sapphire's Aron, evolved into a Lairon before her challenge with Brawly in the Dewford Gym. Although it was, having newly evolved, her highest-level Pokémon, it failed to beat his Hariyama, but was put into good use against Aqua Admin Matt, beating his Pokémon and injuring him badly enough that he was not taken to the Seafloor Cavern sometime later. It evolved into an Aggron on Mirage Island as a result of the training Sapphire underwent alongside Ruby.
Lairon tempers its steel body by drinking highly nutritious mineral springwater until it is bloated. This Pokémon makes its nest close to springs of delicious water.
Lairon feeds on iron contained in rocks and water. It makes its nest on mountains where iron ore is buried. As a result, the Pokémon often clashes with humans mining the iron ore.
When two Lairon meet in the wild, they fight for territory by bashing into each other with their steel bodies. The sound of their collision carries for miles.
In Generation III, Lairon is the only non-Bug-type aside from Magikarp that only learns a single move at its evolutionary stage without canceling evolution later on, with Protect at level 37.
Origin
Lairon may be based on the Pulgasari, a monster which eats iron in Korean legend. It also have a similar body shape to the Placerias, a mammal-like reptile from the Triassic period.
Name origin
Lairon may be a combination of lairy (slang for aggressive) or lair and iron.
Kodora may be a combination of 巨 ko (large) and dragon.
This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.