Seeing that this is Warhammer 40,000, Eisenhorn and company encounter a number of nightmarish terrors.
- The Saruthi. The narrative takes great pains to describe just how unnerving these Starfish Aliens are: theres no symmetry to their bodies whatsoever, not even in the way they move. Their heads are oblong shapes with no eyes or mouths, but plenty of nostrils. Their limbs end in human-like hands with too many fingers, and they can interlace their fingers into a lifelike recreation of a human face, which they can speak through. Even by the standards of 40k, these creatures are bizarre, alien, and unknowable.
- The mutants that Eisenhorn encounters on Eechan are prime examples of Body Horror. Theres a pole dancer with no eyes and a Belly Mouth, a thug whose head is just a giant eyeball with a hood of skin for an eyelid, a multi-armed hooker with an extra eye at the end of her tongue, and a man so hideously mutated that he looks like a grotesque anthropomorphic elephant.