The heretek genetors of House Sinekai require specialised servitors to maintain their nightmare menagerie. Geist servitors drift patiently around the animal pens, providing nutrients, extracting specimens and performing simple surgeries. The geists are also used in times of war, drifting ominously and implacably towards their target. Their parasitic bio-electic tendrils drag along the ground and drawn in nearby sources of energy allowing the geists to remain functional indefinitely, though requiring them to remain motionless and recharge after large energy expenditures. Their equipment – electro whips, surgical manipulators and assorted mechandrites – are often supplemented by flamers and tezlic lightning cannons.
Though largely mindless, geists are capable of performing relatively complicated tasks. They posses simple sensor clusters which are often hidden behind masks – often little more than a crude drawing.