The Cyberdyne Systems Series C Segmented Autonomous Scout Assault Drone[1], HK-Crawler[1] or Silverfish[1] is a scout unit used by Skynet during its war against the Resistance in the years following Judgment Day.
The Silverfish was a meter tall, six-meter-long segmented attack-drone that resembled it's namesake insect, the silverfish. Another one in a line of biologically inspired non-humanoid Hunter-Killers, the Silverfish was designed for sneak attacks. Deployed in battle, the Silverfish would slither along the ground seeking human command posts. Its low height made it both hard to spot and also offered some protection from enemy fire. When the Silverfish encountered an enemy target, it would plow headlong into the target and explode.