Spoiler Alert Spoiler Alert: WARNING! This page happens to contain a lot of heavy spoilers that are all originated from the Overlord author, Kugane Maruyama and his collection of written works. Anime-only watchers and Manga-only readers, please take some time off to reflect it over for a bit before choosing to expose yourself on reading the information below recklessly.

NoImage Alert Judging from the current state of this page, there is no available image on the Overlord Fandom as of yet to help emphasize its appearance. Since it is lacking visuals, this article requires an image for the first time, the kind which should be high quality and distinguishable. You could go out of your way to assist the Overlord Wiki by adding an official image that came from any Overlord adaptation to it.

Heatstone (熱鉱石) is a mineral mined by the dwarves of the Dwarf Kingdom.


The dwarves use this curious metal like coal, and their refineries and smithies consume vast quantities of them. Thus, one could say that heatstones are a central part of dwarven life. Heatstones become the replacement of wood and serve the subterranean race in all manners. It is mined primarily for heating, illumination, and cooking.[1]



Heatstones are a special kind of metal. If one struck them with a very hard metal, mithril at the barest minimum, they would produce intense heat.



Community content is available under CC-BY-SA unless otherwise noted.