Spoiler Alert: WARNING! This page happens to contain a lot of heavy spoilers that are all originated from the Overlord Light Novel series written by the author Kugane Maruyama. To every Anime-only watchers and Manga-only reader out there viewing this warning, please mindfully consider your decision first before choosing to expose yourself on reading the information below. If you're not currently up-to-date with the main source material in the official books, do consider staying away from the page for non-spoiler sake until you actually read it first ahead of time.
In Mass for the Dead, the mask was given out as a Relic Item, with a five star rarity. It could increase attack power by 371 and accuracy of the "fire" element. It was presented by the management to users who logged in on December 24, 2019.