void soul

The "Essence of Chaos", Void Termina's core.

The boss that takes this name in particular is exclusive of the Soul Melter difficulty in "The Ultimate Choice", replacing a nameless version of Void Termina's core from the main story.

Void Soul themself is also replaced in Soul Melter EX (the highest difficulty) by Void

This tag implicates void_termina (learn more).