Grey Goo

Grey goo is a hypothetical threat consisting of an aggressive hegemonizing swarm of self-replicating nano-mechanoids.

— The Librarian

Grey goo is a greyish, sludgy mass that ripples and pulsates slightly. It is composed of microscopic nanobots which can spread and grow by decomposing almost any matter it encounters to create more nanobots.

Scientific Name

Variable non-sentient mechanoid swarm

Tech Level

7B