The Hybrid The Hybrid was a Gallifreyan legend that said all Matrix prophecies predicted that a hybrid creature , thought to be crossbred from two warrior races , would stand over the ruins of Gallifrey and unravel the Web of Time , breaking a billion billion heart s to heal its own . Rassilon searched for information about the Hybrid . ( TV : " Hell Bent " ) References . It was popularly supposed that the two warrior races would be the Time Lord s and the Dalek s . ( TV : " Hell Bent " ) Davros attempted to fulfill the prophecy by giving some of his Daleks regeneration energy taken from the Twelfth Doctor , transforming them into Time Lord hybrids . ( TV : " The Witch ' s Familiar " ) However , the Doctor later revealed the Daleks would never allow anything to be half - Dalek . ( TV : " Heaven Sent " ) The Twelfth Doctor claimed at various points to possess special knowledge about the Hybrid , going so far as to one point stating that the Hybrid was " me " . ( TV : " Heaven Sent " , " Hell Bent " ) It was suggested that knowledge of the Hybrid prophecies from the Cloisters originally drove the Doctor from Gallifrey , and Ashildr proposed that the Doctor himself was a half - human half - Time - Lord hybrid . ( TV : " Hell Bent " ) However , the author of the Time Lord Academy textbook on Gallifreyan history believed that the Doctor was bluffing when he said he was the Hybrid . ( PROSE : " A Brief History of Time Lords " ) Other possible candidates for the hybrid included the part - human part - Mire Ashildr , ( TV : " The Girl Who Died " ) the simultaneously - human - and - Zygon Osgood , ( TV : " The Zygon Invasion " ) the " part - human part - wolf " Rose Tyler , the post - metacrisis Doctor Donna , and the half - Time - Lord River Song . However , none of these quite fit the prophecy . ( PROSE : " A Brief History of Time Lords " ) In the Cloisters at the end of the universe , Ashildr posited to the Twelfth Doctor that the Hybrid could be interpreted as referring to more than one being : specifically , the pair of the Doctor and his companion Clara Oswald . Just prior to losing his memories of Clara , the Doctor indicated that his reckless actions in trying to prevent her death made him the Hybrid . ( TV : " Hell Bent " ) In 2002 , Sam Jones told Griffin about a Gallifreyan prophecy concerning a hybrid . She said the Doctor was a hybrid , his father a Time Lord and his mother a human , and that he was destined to unite the two races and " bring good old human niceness into their alien society " . Though she thought she was bluffing to stall Griffin , the Eighth Doctor later asked her who had told her about the prophecy . ( PROSE : " Unnatural History " ) Behind the scenes . Although " Hell Bent " , among other series 9 episodes , offered multiple possibilities as to the identity / nature of the Hybrid , showrunner Steven Moffat , in an interview for " Doctor Who Magazine " # 504 , confirmed that he intended that the Hybrid was the pairing of the Doctor and Clara . He retroactively linked this fact to the reason why the Doctor ' s TARDIS exhibited some hostility towards Clara in series 7 . ( This would also explain the hearts the Hybrid would break : the audience ' s . )