Unversed

“	The negativity took shape as these monsters. They are what I feel - a horde of fledgling emotions under my control.	„
	~ Vanitas

The Unversed are dark creatures and serve as the main antagonistic faction in Kingdom Hearts: Birth by Sleep.

Summary

They are creatures that were born from the negative emotions produced when Master Xehanort created Vanitas by forcefully separating the darkness in Ventus' heart from him, and new ones also spawn whenever Vanitas feels negative emotions. They are very similar to the Heartless, but instead of being the manifested darkness of people's hearts, they are made entirely of the raw darkness created by the negative emotions. The Unversed also do not seem to be interested in stealing the hearts of anyone they encounter, but seem to delight in attacking other beings and wreaking havoc on the worlds for the sole purpose of causing trouble.

As the Unversed can only come into being when a person's darkness is extracted from their heart and made into a real person, as long as Vanitas is alive, the Unversed can never truly be wiped out. Each Unversed that was destroyed had its negative energy sent right back to Vanitas, where he would simply revive it. This never-ending cycle continued until Ventus and Vanitas clashed at the Keyblade Graveyard. When Vanitas was destroyed, so were the Unversed.

Vanitas created the Unversed to draw Ventus and Terra out of The Land of Departure and provide enemies that would give them experience.

Vanitas, and by extension the Unversed, return in Kingdom Hearts III. In Monstropolis, Vanitas uses them to scare children and gather energy from their screams.