Prince Aaronev Wilhelm Sturmvoraus apparently assisted the Geisterdamen in collecting young girls and women as test subjects for the machine, in hopes that one of them would turn out to be a suitable host for Lucrezia. All of these victims seem to have been killed or [ left in a vegetative state] [[Chronology - Volume #|✣ ]]. The Geisterdamen [ took the machine] [[Chronology - Volume #|✣ ]] with them when they left Sturmhalten. The copies have a mutual registry code that involves blinking and other facial tics to identify themselves, as observed by Tarvek in Agatha H and the Clockwork Princess.