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Overlord Wiki
GA Non-Canon: REMINDER! This page is considered as among one of the many pure game contents found exclusive in Mass for the Dead only. It includes the new standalone characters that had a first-time appearance in the game. Meanwhile, the old characters had a different role and fate than from the main storyline in the official books. For that reason, it has no connections to the canon story materials of Overlord Light Novel series. The content that you had read here are based on the Overlord mobile game.

Debris (残骸) is the tentative name for an unknown substance discovered in Kalinsha in Mass for the Dead.


This item was discovered in the Cathedral of Kalinsha, guarded by a Dragon Chaos Beast after Momonga slew it. After noticing this find, it was later brought to the Great Tomb of Nazarick where Demiurge and Pandora's Actor began to study it.[1]

Eventually, Demiurge was able to determine that the substance shared various characteristics with a deceased petrified body of a newly discovered monster that was found in the Northern Cave.[2]


It resembles some sort of organic metal with a hollow inside and a complicated shape that seemed naturally formed.


According to Demiurge's analysis, although the substance is close to an ore, it did not match any identified ore but was a bit more like a temperate stone. The Floor Guardian's report, also included that it seems to be related to the Cracks and may have formed through artificial methods.


  • Aura believed perhaps this materiel was some sort of fossil, but Demiurge disproved this stating that the material consists of an outer layer that is hardened, but with an inner side that is soft and not uniform, indicating it to be not that old in age.