[As "Phase three" is ordered, the skin looks oddly natural, if a bright pink...
The trilobite stretches and pulls it over the laid in muscle tissue. A few stray limbs seems to work creating ligaments, and cartilage as it works, tucking it in between joints with perfunctory ease.
There could be hundreds by now, cutting skin, folding, creating the features of your average human.]
"Prepare for Procedure two."
[NOW the assistant seems to collect the demon essence as well as ... actually another small pile of rocks.]