Golem's brownish-colored body resembles a boulder as a layer of plated rocks covers it. Golem has a head protruding out of the center of the shell, short arms that have three claws, and two legs with five-clawed feet that have four claws in front and one in back. Unlike its previous forms, it has red eyes and its face appears much less 'rocky' and craggy in appearance, instead being somewhat turtle-like with two visible teeth in the lower jaw. Golem's shell is hollow.
Golem are able to withdraw their head, arms, and legs into their shell and roll athigh speeds, usually causing small earthquakes when doing so. Golem are dangerous when doing this, as they are unable to see and may crash into or run over anything in their path. Golem’s body is so hard that even dynamite cannot scratch it. Golem is also capable of using Explosion.
Golem use the explosive force from blowing itself up to jump from mountain to mountain. Golem are known for rolling and tumbling down mountains, leaving grooves from peak to base. To prevent them from rolling into the homes of people downhill, grooves are dug into the sides of the mountains to divert the rolling Golem’s course. Golem will also roll down the mountains in copious numbers if there is a large earthquake. Golem grow bigger by shedding their skin once a year. The discarded shell immediately hardens when exposed to air, crumbling away and returning to the soil.
Golem are seldom seen in the wild. However, they can be found living in mountainous regions, just like its pre-evolutions. Golem also live in volcanic craters on mountain peaks. They can be found in Kanto and Johto.
This Pokémon was unavailable prior to Generation I.