Sableye is a bipedal Pokémon with a dark purple body, armed with sharp teeth and claws, which it uses to dig through soil. It has pale blue, gemstone-like eyes, which allow it to see in low light and sparkle in the dark. It also has a red gemstone on its chest, and its back has a blue and green gemstone as well as another red one. These gem-like eyes and adornments on its body are caused by its diet, which consists of rocks and raw gemstones. Because of this, each individual Sableye can create an infinite number of patterns on its body.
It also targets Carbink as prey, though they are usually taken by Gabite before Sableye can reach them. It is feared by people since it is said to steal a person's soul if they look into its eyes. It is nocturnal and is rarely seen. It lives in the darkness of caves. It uses its claws to dig for gems to eat and fight back.
As Mega Sableye, being bathed in Mega Evolution energy causes the red jewel on its chest to rip out of Sableye's skin and significantly increase in size; the detached jewel leaves a small hole in Mega Sableye's chest. Its ears elongate, and it gains a spike on the top of its head. Its teeth turn from white to yellow, and its eyes also change from pale blue to crimson red, with diagonal slits at their inner edges. Its back gains more gems: a second green one, a second red one, and two small yellow gems.
The enlarged jewel is said to boast such incredible hardness that no attack can even leave a scratch on it. During battle, Mega Sableye shelters itself behind the jewel, from where it can take advantage of any openings its target leaves exposed. However, being forced to support its massive jewel leaves Sableye unable to turn quickly, making it vulnerable from behind.
Pokémon Mystery Dungeon: Explorers of Sky: Six Sableye perform the same role as above, and in addition appear in Special Episode 5, which contains the events happening after Grovyle returns to the future with Dusknoir, and play a role in the episode's plot.
Pokémon Super Mystery Dungeon: One of Dusknoir's Sableye appears as a recruitable Pokémon but will only post the connection request after Dusknoir is recruited. Sableye's request also leads to Spiritomb's recruitment.
This Pokémon was unavailable prior to Generation III.
Prior to the introduction of the Fairy type in Generation VI, Sableye (along with Spiritomb) had no weaknesses under normal conditions.
Sableye may be based on the Hopkinsville Goblin, a creature from an alleged Kentucky alien encounter described as having shining eyes, small legs, clawed arms and swaying hips (a movement that Sableye imitates in the 3D Pokémon games). The Hopkinsville aliens are most famous in Japan, where they have appeared in several media.
The ruby and sapphire on Sableye's body may be a reference to the games it debuted in.
Sableye may be a combination of sable (either referring to the heraldic color or the animal it is named after) and eye. It may also be a play on able-eyed.
Yamirami may be a combination of 闇 yami (darkness) and 藪睨み yabunirami (cross-eyed sight, squint) or 睨み nirami (glare).