Black Beast

The Black Beast is a legendary beast that threatened to cause much calamity before the events of the first game.

Information
The Black Beast is a combination of Ragna and Nu fusing together inside of the Cauldron, Ragna is its body, and Nu is its heart. It was confronted by the Six Heroes and sealed away. In BlazBlue: Continuum Shift, it is revealed that the Black Beast was a failed product of Terumi Yuuki in an attempt to create Kusanagi, the "Sword to Slay the Gods".