Pluto is small and cold, and organic tissue does not fare well in its extreme climate. But the merchant spacemen always seek opportunity for profit in regions where others dare not travel. Robotic proxies act as security in the largely unmanned manufacturing facilities that operate in the area.
Infestation of a living natural organism and the transformation of its molecular structure happens much more rapidly than with large synthetic ships or machinery. Infested nanites quickly break down organic tissue and begin to evolve the existing specimen into a new organism with characteristics and functions ideal for survival and self-defence. In many cases, visible traces of the victim’s original form are still visible in the new mutated form – a stark and horrifying memorial.