Graveler is a bipedal, boulder Pokémon. Its round body is covered with small bumps and it has a rocky crest above its small eyes and mouth. It has four arms, each with a three-fingered hand. Its second pair of arms is typically kept tucked against its chest. It was shown in Pokémon Snap that, despite having legs, it can revert to a legless form. This grants it the ability to float.

Graveler's preferred locomotion is rolling, specifically, because it is a slow walker. It often rolls down mountain paths at high speeds exceeding 60 mph, crushing objects in the way and stopping by running into huge rocks should it build up too much speed. However, it will explode if it rolls into a river instead. Graveler is known to be generally free and uncaring, not minding if pieces of itself break off, as it can restore itself over time. Graveler climbs a mountain from base to summit, feasting on rocks all the while. Graveler's favorite rock to eat is moss-covered rocks. It regularly consumes tons of moss-covered rocks and makes loud noises while eating. Upon reaching the peak, it rolls down to the bottom. Graveler live in horizontal holes that they gouge out in sheer cliff faces, and they are capable of withstanding volcanic temperatures.

Forms
Graveler has a regional form: Alolan Graveler.

In the Alola region, Graveler looks similar to its regular counterpart, but with a silvery sheen. It lacks defined digits on its upper limbs and has two toes on each foot rather than three. There are several small, yellowish crystals scattered across its body and iron sand attracted by magnetism. This black sand creates crystal-like formations above its eyes, across the tops of the upper pair of arms, and on the sides of its face.

Alolan Graveler has a very quick-tempered personality. Alolan Graveler feeds on dravite, which creates the yellow crystals on its body and grants it electrical abilities. It often fights with others over food, and when two smash together, it creates a flash of light and a booming sound; for this reason, people refer to it as "the fireworks of the earth". Similar to its Kantonian counterpart, Alolan Graveler rolls down mountain paths; however, instead of flattening obstacles as it rolls, it sends them flying by zapping them with electricity.

Evolution
Graveler evolves from and evolves into .
Alolan Graveler has a dual-type Rock/Electric regional form. It evolves from Alolan Geodude and evolves into Alolan Golem.

(Source: Bulbapedia)