Uvodni The Uvodni were a humanoid race from the Spiral Cluster of the Dragon Nebula . Biology . The Uvodni were tall , aggressive humanoid s , with insect - like faces . They had brown or greenish skin and large eyes with thin , horizontal pupils . They were stronger than human s , as Uvlavad Kudlak was easily able to lift up Mark Grantham . ( TV : " Warriors of Kudlak " ) Technology . The Uvodni utilised powerful teleporters to transport new children warriors onto their ship . These teleports were charged with a process that usually resulted in freak rainfall , similar to an HO scoop . They owned a variety of weapons . Uvodni like Uvlavad Kudlak and Mark Grantham carried laser pistols , while their Slab warriors were armed with far more available blaster weapons which fired a yellow target seeking laser burst . During his expedition on Earth , Uvlavad Kudlak used a warship which orbited the Earth . This ship was fitted with crates to hold prisoners , teleport links with Earth and shuttle crafts to be used in emergencies . The ships were patrolled by Kudlak soldier ' s , while the Mistress was situated at the bridge of the ship . ( TV : " Warriors of Kudlak " ) History . In 102 , the Uvodni were among the races who joined the Alliance . A representative came to Stonehenge and witnessed the imprisonment of the Eleventh Doctor in the Pandorica in order to save the universe . ( TV : " The Pandorica Opens " ) When the plan failed , they were erased from the universe along with almost every other race in the galaxy . However , the Doctor managed to prevent this using the Pandorica , and they were restored to their proper point in time and space . ( TV : " The Big Bang " ) Around the 21st century , the Uvodni were at war with the Malakh race in the Horsehead Nebula in a conflict known as the Ghost Wars . After losing many soldiers , they discovered Earth and the human race , and used their children as soldiers in the far - off battlefields . General Uvlavad Kudlak was in charge of this operation , and he duped a human named Mark Grantham to help him . They only kidnapped the children that had won Level 2 in the futuristic war game Combat 3000 . At some point in the 21st century , the Uvodni and the Malakh signed a peace treaty . Mistress , the computer controlling Uvlavad ' s ship , was not programmed to understand peace and refused to tell Uvlavad of the end of the war , meaning he continued to kidnap children . Eventually , Sarah Jane Smith caught wind of his activities and was able to stop him by informing him of the end of the war . Uvlavad destroyed Mistress and , after having an offer to give his life in atonement of his actions refused , agreed to try to find all the children he had kidnapped . ( TV : " Warriors of Kudlak " ) An Uvodni head was on display in Hedgewick ' s World of Wonders in the alien collection . ( TV : " Nightmare in Silver " ) In 2009 one Uvodni was captured by the Krulius and stored in a data - pod . The Krulius later used his digital bio - converter to upload the Uvodni ' s bio data onto the internet . There it was found by Mr Smith , Rani Chandra and Clyde Langer who sent the Uvodni back to it ' s original place . ( COMIC : " Monster Hunt " ) The Krulius later told Rani Chandra that he had managed to take clone cell samples of his former captured aliens with him , which allowed him to grew perfect copies of these aliens . ( COMIC : " Return of the Krulius " ) In late 2010 , an Uvodni , called General Kudlak , took part at the army of alien slaves led by the Krulius to attack Sarah Jane ' s house . When Clyde defeated several of the aliens , the Uvodni regrouped with the army and the Krulius ordered them to retreat . Sarah Jane thought that the aliens were under some kind of hypnothic influence . ( COMIC : " Defending Bannerman Road " )