Raston Warrior Robot

Raston Warrior Robot are the most perfect killing machine ever devised. They are silver androids and one of the deadliest players of the Game of Rassilon in the Death Zone.

The robot hunted by detecting movement and was as quick as lightning, It moves by jumping in the air and dissapearing then reappearing at its destination. It had built in weapons and can fire disks and arrows from its hands. It enjoyed toying with its prey. The robot was incredibly powerful and could kill a squad of Cybermen in under a minute.

When the Death Zone became active again and the Doctor's different incarnations were put in the Zone, the Third Doctor and Sarah Jane Smith encountered the robot by a cave entrance. They were forced to remain still, just as they were tiring of remaining still a patrol of Cyberman appeared and the robot attacked them. It fired a barrage of arrows into their chestplates and killed them all. Inside the cave Sarah and the Doctor found the robots spare arrows and for some unknown purpose there was also rope there. (DW: The Five Doctors)