Outfitted with a massive vertical jaw, the Inchworm can inch back and forth or pull itself forward like a crab, thanks to opposing ratchets on the front wheels that drive them in opposite directions.

Constructed entirely from aluminum, the Hovercraft is propelled and steered via the remote control of four 4-foot-long pulsejet engines providing 70 lbs. of thrust. Roaring at 150 decibels, SRL calls it “the loudest robot in the world.”

The six-legged Running Machine trots along at 6 mph, powered by a gas engine that drives a hydromotor, that moves the chain linkages, that turn sprockets to enable the locomotion. The Running Machine also boasts a hydraulic manipulator arm for picking apart props.