Sableye has deep, purple colored fur with little claws, pointed ears, and sharp teeth. It also had two big gemstones over its eyes, with a gem on its stomach and three gems on its back. It resembles a Hopkinsville goblin.
Its special abilities are either Keen Eye or Stall. It hides in the darkness of caves. Its diet of gems has transformed its eyes into gemstones. As a Dark/Ghost-type, it used to have no weaknesses.
An old story was told that if you look at Sableyethe eye to eye, your soul will be stolen. But the evidence suggests that this Pokémon is actually very friendly, and they will only do mischief to travelers to win attention. Their mischief makes them notorious, but in fact it is only because they have a long stay in the dark cave and become too lonely.
Sableye has no evolutionary forms, but can Mega Evolve into Mega Sableye
In Explorers of Time, Darkness and Sky, there are a group of Sableye that are servants of a Dusknoir, and are constantly spying on and trying to capture the player Pokémon in the world of the future. However, when Dusknoir reforms in the special episode, they do so as well. They demonstrate this by first attacking Primal Dialga to protect Dusknoir (though they are easily blasted away by his Roar of Time) and later by locating Primal Dialga when he is searching for a Passage of Time.