The T-660 Cyberdyne Systems Series 600 Infiltration Unit, or T-660, also known as "Ragdoll", was an Infiltrator built by Skynet in the RPG timeline.[1]
The T-660 is a huge advancement in infiltration over the standard 600s. Thanks to advances in miniaturization, Skynet was able to reduce the unit to a human-sized light titanium combat chassis and increase both memory size and processor speed. Dressed in ragged human clothes, it can hide in a crowd and get close to Resistance camps.[1]
The rubber skin has also been improved, it is tear-resistant and can easily be mistaken by human skin in low-light conditions. The mask is still completely expressionless: the 660’s mouth barely moves as it speaks and the eyes are simple crystal beads, giving them an eerie doll-like appearance in the eyes of the Resistance.[1]