Auton policeman

Sent to intercept the Third Doctor at the International circus, an Auton disguised itself as a policeman to take the Doctor and Jo Grant to a quarry to kill them. However, the Doctor saw through his disguise, but the Doctor caused their car to crash. His was door was blocked and tried to shoot the Doctor and Jo as they ran. He and the other Auton managed to get out of the car and started to search for thier escaped prisoners. The Brigadier, Captain Mike Yates and another UNIT soldier arrived and also started to search for the Doctor and Jo. The Autons shot one of the soldiers, and, as a last resort, Mike Yates rammed his car into the Auton, throwing it off a cliff. The Doctor, Jo, the Brigadier and Yates escaped in their car.

The two Autons returned to the Master without the body of the Doctor and Jo. The Auton was destroyed when the Doctor threw the Nestenes back into space. (TV: Terror of the Autons)