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'''Servo-skulls''' are drone-like devices fashioned from [[human]] skulls – often those of pious [[Imperial]] servants, low-ranking [[tech-adept]]s, [[Tech-priest]]s with unfinished work, or loyal adepts of the [[Adeptus Terra]] – and then given a rudimentary [[Machine spirit]], support systems, and anti-gravity engine to allow them to hover and drift bodiless through the air.{{Fn|1}} Presumably this chance to continue their work even after death is a great honour in the Imperium.