The floating psychic Lictor/Stealer mutant (counts as a Genestealer). One idea behind this creature was to underline the family resemblance between the Lictor and the Genestealers (both are infiltrating creatures, relatively independent from the Hive Mind, both feature bloated heads), a thing which I discussed with Jes a year ago. This model was also my way to say farewell to the classic Genestealer model. The floating thing and the bloated psychic head are just for extra creepiness (and before somebody asks: Yes, the Guard officer's head has already been opened for the tender caress of the Feeder tentacles...)