An Archraven is, true to its name, a bird-like Unversed with a predominantly black and grey coloration. It does not have legs and instead has a wide, fleur-de-lis-shaped tail. Its body and wings have thin, red patterns decorating them. Its head also sports a five-pointed crest. The Archraven's red eyes are set in a happy expression and the Unversed emblem is emblazoned on its chest.
The Archraven's name refers to the fact that it is modeled after a raven. The term "arch" means to be of a higher level or stature.
In Kingdom Hearts Birth by Sleep Final Mix, the Archraven receives a palette swap, which gives it a faded, dark green body with white patterns replacing the red ones.
Archravens are not that difficult to defeat, as they are normally docile until approached. They will, however, dive at the player when he or she is too close. There are two techniques one can use to defeat an Archraven. The first method is to wait until it comes down to attack in order to damage it with a combo. The second technique one can attempt is to utilize aerial attacks or Fire magic and swat the Unversed down, paralyzing it. Also be sure to pick up any uncollected HP orbs, munny, or D-Link prizes dropped by previously defeated Unversed, as Archravens have a tendency to steal them.