Clone A clone was ( usually ) a genetic copy of another biological entity . Clones could be produced to be exact replicas with short lifespan s , as the Fourth Doctor did for himself and that of Leela at the Bi - Al Foundation , ( TV : " The Invisible Enemy " ) or they could be clones of individual cells which were grown into a usable organism , as Cassandra O ' Brien did for herself following the destruction of the skin taken from the front of her body , on Platform One . ( TV : " New Earth " ) Uses of cloning . Military use . The Sontaran s were a clone race , making each Sontaran almost identical to the other . ( TV : " The Invasion of Time " , " The Sontaran Stratagem " ) Clones of Gallifrey were created during the the War against the Enemy and came to be known as Nine Gallifreys . ( PROSE : " The Shadows of Avalon " ) On Moldox , during the Last Great Time War , the Daleks were cloning Kaled mutant s for their new paradigm of Temporal Weapon Dalek s armed with Temporal Cannon s . ( PROSE : " Engines of War " ) Espionage . A clone of Martha Jones was made by the Sontaran s to infiltrate the United Nations Intelligence Taskforce . The clone had a mental link with the real Martha and could access her memories . If the link was broken , the clone would most likely not survive . The Sontarans used many clones to try to stop the Tenth Doctor from interfering with the conversion of the Earth ' s atmosphere and the subsequent invasion . The Doctor broke the link between Martha and the clone , killing it , but before it died , Martha used the fact that it still had some of her memories to convince it to help them . The clone explained that the ATMOS gas was clone feed . ( TV : " The Sontaran Stratagem " / " The Poison Sky " ) Using blood samples taken from the Sixth Doctor in 2004 , the Forge operative known as Nimrod created a multitude of clones in the form of the Sixth Doctor in order to discover the means of Time Lord regeneration . None of the clones could regenerate . They only had a one - in - ten chance of surviving birth and would not live very long afterwards . Nimrod had abandoned this project by the time of the Seventh Doctor ' s visit to the Forge ' s base in Dartmoor in 2008 . ( AUDIO : " Project : Lazarus " ) The Dalek s had the technology to create duplicates of humanoids , employed in undercover work . ( TV : " Resurrection of the Daleks " ) Labour force . Santa Claus used clones of himself to deliver presents on Christmas Eve . ( PROSE : " The Man Who ( Nearly ) Killed Christmas " ) In the 22nd century , humans cloned Ganger s from the Flesh as a workforce in industrial facilities . Some of these Gangers gained free will . Ganger technology continued in one form or another into the 52nd century . ( TV : " The Rebel Flesh " / " The Almost People " ) In the far future , clones of Wolfgang Amadeus Mozart became hugely popular , not just for their musical talent but also used to perform menial duties . They were abandoned or thrown away after they became unfashionable . One clone time travel led to 1791 Vienna to save Mozart ' s life and give him immortality , creating an alternate timeline in which Mozart lived long enough to become a hack . However , the clones were still mistreated in this timeline since enough people remembered the good music Mozart had written . The Sixth Doctor negated this timeline by persuading Mozart to refuse the clone ' s offer . ( AUDIO : " My Own Private Wolfgang " ) Other instances . Using DNA from the Fourth Doctor , a clone of the Second Doctor was produced . He believed that he was the Doctor , and even contained memories taken from the Doctor . However , he was in league with the enemies of the Doctor . The Fourth Doctor saved his life and he repaid him by helping return Hexford to its original place on Earth . Like the examples noted above , it was not believed to be able to last longer than a few months . ( AUDIO : " The Hexford Invasion " , AUDIO : " Survivors in Space " ) A clone of Bernice Summerfield became President of Earth . ( AUDIO : " The Final Amendment " ) Clones of the Three Who Rule were produced . ( PROSE : " Blood Harvest " ) In June 2027 , Ace told Henry Noone that Earth would have " new pandas " by 2040 , suggesting that pandas had become extinct at some point in the early 21st century and were eventually brought back to life through the use of cloning . ( AUDIO : " A Death in the Family " ) In 2040 , efforts were made to repopulate Europe with cloned wolves . ( PROSE : " Culture War " ) Davros created a clone of his younger self named Falkus on Azimuth . ( AUDIO : " Daleks Among Us " ) In 4880 , Professor Oksana Kilbracken developed a process of cloning on Earth . ( AUDIO : " Revenge of the Swarm " ) In 5000 , a short - lived clone replica of the Fourth Doctor and one of Leela were produced by Professor Marius and shrunken down to fight the Swarm inside the Doctor ' s brain . When the Swarm took control of Marius , he made a clone of Lowe to pursue them . These clones had lifespans of less than eleven minutes . ( TV : " The Invisible Enemy " ) Professor Patrick Trethui cloned Vilgreth from the remains of a Titanthrope he had discovered . ( AUDIO : " Last of the Titans " ) A planet of Rory Williams clones were populated from Rory ' s DNA . ( COMIC : " Planet of the Rorys " ) Madame Karabraxos of the Bank of Karabraxos used clones of herself to staff important positions at the bank . When they failed , Karabraxos had the clones " fired " , incinerating them . The Twelfth Doctor came into conflict with one of these clones , Ms Delphox , while robbing the bank . ( TV : " Time Heist " ) Madame Kovarian used Melody Pond ' s embryonic DNA to create clones of Melody . The first seven clones were lost after the Eleventh Doctor ' s raid on Demons Run . Kovarian created at least four more clones who she raised into adulthood as assassin s , to complete the job of permanently killing the Doctor . ( AUDIO : " The Lady in the Lake " , " The Furies " )