Wheelers

Wheelers are small, human-made robots that can be found on Outpost 448 (at the "park" and on the center isle(?)) and in an inconveniently located Noodles &amp; Bar. One also can be found at Gruff's Stuff. They have big "heads" mounted on a single wheel. While one of them sells beverages at the Noodle Bar, the others don't talk. They don't seem to be conscient. On the Waste Site planet wheeler heads are mounted to the outside walls as cameras or lights.