Mechanoid

Mechanoids are similar to space gremlins in their propensity for attacking base structures rather than people. However, these rogue cyborgs are much more destructive. They tunnel up through the floor of your base and begin trashing objects before you even realize they're there. Weapons systems won't target them, since they're inside the base. So send your fastest operatives to the scene and they will destroy the mechanoids with hand-held lasers.