Unversed



The Unversed (アンヴァース), meaning "those who were not well-versed in their own existences", are the main enemies of the game Kingdom Hearts Birth by Sleep. They are considered "the opposite of human life" and grow from the negative emotions produced when Vanitas was created from Ventus. It is because of this that Vanitas is able to control them. By all accounts, the Unversed are extensions of Vanitas himself.

Chronologically, the Unversed are either the first or second enemy referenced during Deep Dive, as they are the second race to manifest, but the first to attack the Realm of Light.

Kingdom Hearts Birth by Sleep
Around the same time as Master Xehanort's leave from the Land of Departure, the existence of the Unversed is brought to the attention of Master Eraqus by the Keyblade master's old friend, Master Yen Sid. Master Eraqus sends Terra and Aqua (two of his three apprentices) on a quest to find Master Xehanort and stop the Unversed threat. He did not plan on Ventus (the youngest apprentice) trailing after his two friends, and it is due to Ventus's quest and his final battle with Vanitas (his dark side) that the truth behind the Unversed is revealed.

Vanitas explains that the Unversed are his creation, and since he is a being created from the purest, most raw form of darkness, he can manipulate the negative thoughts and emotions of people. He spawned them as Unversed and spread them across the worlds, so that Terra, Ventus, and Aqua can fight them off and grow stronger in the process. The negativity of the defeated Unversed eventually return to Vanitas, and the race as a whole disappears upon Vanitas's destruction.

Appearance
Several varieties of Unversed appear over the course of Kingdom Hearts Birth by Sleep. Emotion was a key component in their conception and design. Thus they are seen with smiling, angry, and crying "faces", referring to the shape of their red eyes, which all Unversed share. The emblem most Unversed are christened with is also meant to represent a heart that expresses emotion.

Trivia

 * The Unversed are the only enemy species not to have appeared as playable characters, unlike the Heartless (Sora's Heartless) and the Nobodies (Organization XIII), save for the Final Mix version where Terra, Aqua and Ven are able to turn into Unversed by using the Illusion Command. The Unversed are also the only enemy species to not be directly controlled by some form of Xehanort.
 * Unlike Heartless bosses and Nobody bosses (whom are enveloped in light when defeated), the Unversed bosses are consumed in a dark flame when vanquished.