After its evolution from Cubone, Marowak is much larger and more powerful. Marowak has a spike located on its tail, but no longer has the two spikes on its back. On its stomach, Marowak is very light brown in color, as opposed to most of the rest of its body, which is a darker brown. Unlike Cubone, Marowak’s head is now composed of the skull it once wore as a mask. Marowak can no longer remove the skull, as it is now a direct body part. Marowak’s jaw is composed of bone, dissimilarly to Cubone, and its nostrils are located on the nose of the skull. Its eyes are now brown, and are also located on the skull. Despite the many changes upon evolution from Cubone, Marowak remains bipedal.
Marowak are well known for ferocity with their bone clubs, from which they derive their title as the Bone Keeper Pokémon. Because Marowak has a limited pool of abilities, the species became well acquainted with using bones are weapons. Often in battle, Marowak will viciously swing the bone at foes, and they have been known to throw the bones like boomerangs for long range attack. Marowak also retains Cubone’s ability to learn Ice- and Fire-type attacks through Technical Machines, and is notorious for having a very high defense. Also, Marowak, and its pre-evolution, Cubone, are the only known Pokémon that learn Bone Club and Bonemerang.
Upon evolution, Marowak has overcome the grief of its mother's passing. Now ferocious and violent, Marowak is an adept combatant, and uses the bone it carries as a weapon and a boomerang. Marowak have also been recorded pounding on boulders with the bone club it carries in order to tap out messages to others.
Being a Ground-type Pokémon, Marowak lives in mountains to test their skills. One is likely to encounter a Marowak in Kanto, although they have been found in Johto as well.
This Pokémon was unavailable prior to Generation I.