Dusk

Dusk is a Nobody that appears throughout the Kingdom Hearts series.

Kingdom Hearts III
Searching for a way to get Roxas back, Sora, Donald, and Goofy journey to Twilight Town. When they reach the Tram Common, Sora declares that he is going to find Roxas, but as soon as he says the words out loud, a mysterious voice enters his head, quickly followed by the appearance of a group of Dusks, which the trio are forced to defeat.

Later, after leaving the Old Mansion, Sora, Donald, and Goofy are shocked to find both Xemnas and Ansem waiting for them. Xemnas claims that the only way to bring Roxas back is for Sora to submit to the darkness, so he and Ansem summon Dusks and Neoshadows to challenge him. The pair exit through a portal of darkness, leaving Sora, Donald, and Goofy to defeat the summoned enemies.