Doctor Space

Squidulons, Series One : The Maplebot

The second robot hovered close to the ground and circled the town for months, first leaving black circles burnt into the grass, later carving a melted, glass-slick moat. It seemed like he was observing, recording, tirelessly watching the citizens... and just like the Oakenbot, he was gone, leaving a scorched trail back to the lab of Doctor Space.