Worker drones who died recently got recreated as some kind of creature And there's four different stages. stage 1 is the worker or disassembly drone coming back to life. . And then during stage 2, if they lost a limb or something it will grow back but it will be made of a black sludge like stuff. stage 3, which is the stage that Rebecca is in, They will slowly loose control over themselves and go insane. Stage 4, Their appearance will start to change and become more disorded