Anima Ergastulum (アニマ・エルガストゥルム ) is the form that Atra Nox Philius takes after Zola destabilizes the force that holds Atra together. It is the final boss of Ys IX: Monstrum Nox.
Trivia[]
- The first phase of Anima Ergastulum where the party fights the two female figures' holding a round object is a nod to the twin goddesses and the black pearl from Ys II.
- Ergastulum is a Roman prison built to imprison slaves. See Ergastulum.