Stent

Stent was a Sontaran on the Moon who was studying humans, having previously worked testing new cloning techniques. He offered the Fifth Doctor and Zara tea. Zara convinced him that their deaths were not of militaristic value. He was tasked with monitoring the flights by the humans. He was creating a garden as his regiment could not be rescued as they were too far out from the frontline. (AUDIO: The Moonrakers)