Stirpeek
From Tardis Wiki, the free Doctor Who reference
Stirpeek was a Servo who served Ernest Tiermann and his family at the Dreamhome on Tiermann's World. He had a glass body, through which sparks and spinning machinery could be seen. He had a "bland" facial expression, but was still able to appear shocked.
Stirpeek was also armed with a laser, which he used to subdue the Tenth Doctor when he attempted to leave the Dreamhome. Like all other Servos on Tiermann's World, Stirpeek was instructed to punish anyone who broke the Dreamhome's fundamental rules, and was authorised to kill if necessary. (PROSE: Sick Building)