Sawtooth Rivergrinder

Sawtooth Rivergrinder – a terraforming robot, first seen in the comic when he saves Sam, Helix and Florence from crashing after Sam and Helix attached a jet to the truck they stole.

Appearance
Sawtooth is shaped like a beetle. He is fairly large, being the size of a truck or a double-decker bus. His chassis is colored red from strips 1295 to 1300, and brown from strips 1301 onwards.

Personality
Sawtooth is quite intelligent and perceptive, and does not like being perceived as dumb. He is able to employ loopholes in the first law to mess with those who underestimate him due to his function. He enjoys amateur detective work.