Antimony (Death Comes to Time)

Antimony was an android companion of the Seventh Doctor.

Biography
Antimony was apparently constructed by the Seventh Doctor as a permanent companion. He did not know he was an android. Ace knew of him. He was killed by Tannis after finding out what he really was. (NOTDWU: Death Comes to Time)

Behind the scenes

 * Antimony's appearance was modelled on that of actor Kevin Eldon by illustrator Lee Sullivan.