Raston Warrior Robot Raston Warrior Robots were , according to the Third Doctor , the most perfect killing machines ever devised . ( TV : " The Five Doctors " ) They were silver android s and among the deadliest players of the Game of Rassilon in the Death Zone . Abilities . The robot s hunted by detecting movement and could move at fast speeds . They would move by jumping in the air and disappearing , then reappearing at their destination — the Third Doctor remarked they " moved like lightning " , which might mean the robots did not actually teleport , but rather moved too fast to be seen . They had built - in weapons and could fire disks and arrows from their hands . They enjoyed toying with their prey . The robots were incredibly powerful and could kill a squad of Cybermen in less than a minute . Cyber - gun s had little to no effect on them . ( TV : " The Five Doctors " ) They were capable of feeding on atomic radiation in the atmosphere . This meant their power never ran down . The loss of their heads did not diminish their efficiency , as they could just simply reattach them . They were also programmed to consider anyone except their makers as their enemy . If blown up , they could simply reform . ( PROSE : " World Game " ) They attacked by locking onto the electrical activity of the target ' s brain ( with two people possessing the same pattern causing the robot to jam ) . The javelins they extruded were generated by the Raston warrior robot , whose entire weapon system was inbuilt . They could repair themselves from severe damage such as decapitation . ( PROSE : " The Eight Doctors " ) History . A legend stated that the Raston Warrior Robots were the product of a race who were old when the Time Lord s were young . This race was devoted to the creation of super weapons . It vanished without a trace . ( PROSE : " The Eight Doctors " ) However , one account states that this legend was actually a marketing ploy on the part of the Raston Hardware Company , who produced the warrior robots ( along with cybernetic lap - dancers ) in a warehouse on Tersurus Luna . The dancers were considerably less indestructible , particularly by the Krotons . ( PROSE : " Alien Bodies " ) A renegade Time Lord attempted to kill the Second Doctor and Serena by sending a Raston Warrior Robot to a warehouse they were visiting during a trip to France in 1805 , but the Doctor was able to disable the robot with a torpedo from a prototype submarine long enough to convince the Countess — an ally of the renegade Time Lord in question — that it would be best to send the robot away before it slaughtered everyone in the area . ( PROSE : " World Game " ) When the Death Zone was reactivated and four of the Doctor ' s incarnations were trapped there , the Third Doctor and Sarah Jane Smith encountered a Raston Warrior Robot by a cave entrance and had to remain still to avoid detection . A patrol of Cybermen appeared and the robot attacked them instead , firing a barrage of arrows into their chest - plates and destroying them all , allowing the Doctor and Sarah to sneak past while it was occupied . ( TV : " The Five Doctors " ) Ryoth used the Time Scoop to send this same robot to the Eye of Orion , where it attacked the Fifth Doctor , Tegan Jovanka and Vislor Turlough . The Eighth Doctor joined them . By using the paradox known as Buridan ' s ass , the two Doctors approached it at the same pace so that both were equidistant from it . Unable to decide upon a target , as the Doctors ' identical brain patterns meant that it was sensing the same target in two different places , the Raston Warrior Robot deactivated . It was reactivated when a Sontaran trooper kicked it . It killed the entire regiment but was itself defeated by Commander Vrag who , in his death throes , ripped its head off . However , it repaired itself after the Doctors had departed , and resumed guarding the area . ( PROSE : " The Eight Doctors " ) The Raston Warrior Robot was confronted by Leela in a clean up of the Death Zone . Regarding it as a " worthy opponent " , Leela ultimately terminated the robot and mounted its head on the wall of her kitchen . ( AUDIO : " Time in Office " ) The Master once used a Raston Warrior Robot to attack the Graak inside the Fourth Doctor ' s mind . ( GAME : " Destiny of the Doctors " ) UNIT once had to deal with a Raston Warrior Robot as part of a crisis known as " the Death of Yesterday " . ( PROSE : " The King of Terror " ) During the War , Raston Warrior Robots in the Death Zone were used for combat training . ( PROSE : " The Taking of Planet 5 " ) Sebastiene once defeated a Raston Warrior Robot and added it to his collection of trophies . ( PROSE : " The Doctor Trap " )