T-1000 infiltrators are made of mimetic polyalloy – liquid metal. This allows them to change their shape at will, from imitating any human they have come into contact with, as well as any item of equivalent mass. As well as being extremely strong, they can form stabbing and cutting parts out of their limbs, becoming a lethal close quarter fighter. Their most remarkable trait however is their uncanny resilience – destroying a T-1000 is almost impossible. The Resistance is going to need some bigger guns.