Demerium

Demerium is the Recidious System cemetery moon of Avarax, an Imperial mausoleum world that Space Marine 2 used as the Chaos and Necron basement under a shrine crust. It is filed here as a planet pin even though the lex charts call it Avarax's moon.

Thousand Sons cadres and the Aurora device turned cathedrums into laboratories. Mechanicus teams had already dug through pre-Imperial stone into Necron tomb architecture before Demetrian Titus arrived. Demerium is not Kadaku's jungle and not a random Segmentum Tempestus graveyard.

Demerium still matters as the Recidious crypt the sequel spends its last acts inside. Unofficial summaries keep the recidious-system parent, keep kind as planet, and refuse to merge this pin with Kadaku or with Dawn of War Tartarus.