Hybrid A hybrid was a lifeform produced from the mating of parents of two different species or a mixture of DNA from two species . The Eighth Doctor claimed that two species were " hardly ever " able to interbreed , and " certainly not " when physiology was as different as the termite - like Kromon and the humanoid Eutermesan s . ( AUDIO : " The Creed of the Kromon " ) Impacts of hybridisation . Hybrids were not always healthy . Hybridisation was known to cause terrible mutation s . ( TV : " Delta and the Bannermen " ) Some individuals were sterile and had shortened lifespan s . ( PROSE : " The Scales of Injustice " ) Other hybrids were more successful . Flisk / human hybrids were better at reading the minds of humans than pure Flisk . ( PROSE : " Snowglobe 7 " ) General examples . Silurian s and Sea Devil s could create cross breeds , even though they were different species . Their hybrids were shunned by society , were sterile and had shorter lifespan s due to cellular degeneration . ( PROSE : " The Scales of Injustice " ) The Raxacoricofallapatorian s and their relatives from their sister planet , the Abzorbalovian s , sometimes bred together ; the Abzorbalovian Rebels were descended from the Raxacoricofallapatorian Huspick Degenerate . ( WC : " " ) In the 26th century , Githian s couldn ' t marry outside their species since they had trouble maintaining the purity of their gene pool . ( AUDIO : " Phobos " ) By the year 5 , 000 , 000 , 000 , interbreeding and evolution had resulted in there being only one " pure " human left , Cassandra O ' Brien . Δ17 . She considered the rest of the current human race " mongrels " . ( TV : " The End of the World " ) Individual hybrids . Human hybrids . The Eighth Doctor described himself several times as half - human on his mother ' s side . ( TV : " Doctor Who " , PROSE : " Alien Bodies " , " Unnatural History " , " The Shadows of Avalon " , " Grimm Reality " ) One account suggested that he first said it as a ruse to fool the Master , involving the use of a Chameleon Arch . ( COMIC : " The Forgotten " ) Me speculated that the Doctor liked Earth so much because he was half - human , making him the Hybrid . ( TV : " Hell Bent " ) The Doctor ' s great - grandson , Alex Campbell , was also half - human , being the child of Susan Foreman and David Campbell . ( AUDIO : " An Earthly Child " ) Gallifreyan gene s constituted only 7 % of his genome so he had no telepathic abilities and couldn ' t regenerate . ( AUDIO : " Relative Dimensions " ) Although both Amy Pond and Rory Williams were human , their child , Melody Pond , contained Time Lord DNA as a result of her being conceived in a TARDIS that was travelling through the Time Vortex , and being altered by The Silence to use as a weapon . ( TV : " A Good Man Goes to War " ) Arnold Golightly was a human - Vespiform hybrid ; he had a human mother and a Vespiform father . ( TV : " The Unicorn and the Wasp " ) Melanie Baal was a Silurian - human hybrid from an alternate timeline . ( PROSE : " Spiral Scratch " ) Gavin had a human mother and a father of an unknown species . ( TV : " The Empty Planet " ) Adam Lloyd was the half - human son of Samuel Lloyd and Eve . ( TV : " The Mad Woman in the Attic " ) Freda ' s mother and grandmother were both Ghosties , while the rest of her family were human . ( AUDIO : " Asylum " ) Ku ' ra Debrekseny was half human and half Flisk . ( PROSE : " Snowglobe 7 " ) Peter Summerfield was a human - Killoran hybrid ; he had a human mother and a Killoran father . ( PROSE : " The Squire ' s Crystal " ) One of Adelaide Brooke ' s descendants fell in love with a Tandonian Prince and created a new human - Tandonian hybrid species . ( TV : " The Waters of Mars " ) King Peladon was a human - Peladonian hybrid ; he had a human mother and a Peladonian father . ( TV : " The Curse of Peladon " ) He later had a three - quarter - Peladonian - quarter - human hybrid daughter , Thalira . ( TV : " The Monster of Peladon " ) Josiah W . Dogbolter was a human - frog hybrid . ( AUDIO : " The Maltese Penguin " ) Thomas Kincade Brannigan and Valerie Brannigan produced several Catkind - human hybrid children . They looked like kittens but could say words like " mama " . ( TV : " Gridlock " ) Tanya Webster was a genetically engineered human - Ice Warrior hybrid . ( AUDIO : " Red Dawn " ) King Yrcanos and Peri Brown had 3 children , which would make their children Krontep - human hybrids . ( AUDIO : " Peri and the Piscon Paradox " ) Later on they also had 3 grandchildren who were three - quarter Krontep - quarter - human hybrids . ( COMIC : " The Age of Chaos " ) Andred and his wife Leela conceived a son , which would make him a Time Lord - human hybrid . ( PROSE : " Lungbarrow " ) Ssard and Stacy Townsend had 3 children which would make their children Ice Warrior - human hybrids . ( PROSE : " Big Bang Generation " ) Helen Lamprey is a Lamprey - human hybrid . She had a Lamprey father and a human mother . ( PROSE : " Spiral Scratch " ) Ashildr became a human - Mire hybrid after the Twelfth Doctor used a Mire medical kit to resurrect her after she died . ( TV : " The Girl Who Died " ) The same happened to Sam Swift . ( TV : " The Woman Who Lived " ) Other species . Baal D ' jo , Sula and Tahni were the offspring of the Silurian Auggi D ' jo and the Sea Devil Warrior Daurrix . ( PROSE : " The Scales of Injustice " ) Kronos was an Eternal - Chronovore hybrid . ( PROSE : " The Quantum Archangel " ) Jack was a Larian , with a little bit of Terian on his mother ' s side . ( PROSE : " Penny Wise , Pound Foolish " ) Tactical Officer 25463 was a Weave / Tahnn hybrid . ( PROSE : " The Glamour Chase " ) Shazar was a Time Lord hybrid . ( COMIC : " Return of the Daleks " ) Since it is known that Nyssa is the last Trakenite ( TV : " Logopolis " ) . This would mean that her husband , Lasarti ( AUDIO : " Winter " ) is from another species and , by extension , her children would be hybrids . Hybrids produced by other means . When the Pyrovile s tried to conquer Earth , they converted the Sibylline Sisterhood into human - Pyrovile hybrids . ( TV : " The Fires of Pompeii " ) After the Doctor resurrected Ashildr using the Mire repair kit , Ashildr became human with " a little piece " of Mire technology inside her . According to the Twelfth Doctor , this meant that " in a way , she ' s a hybrid . " ( TV : " The Girl Who Died " ) Sam Swift later became a hybrid of the same nature , created by the same means . ( TV : " The Woman Who Lived " ) When the Tenth Doctor halted his regeneration by shifting his regeneration energy into his severed hand , a Meta - Crisis occurred , resulting in Donna Noble being turned into a Time Lord - human hybrid , giving her the Doctor ' s knowledge ( although the Doctor later had to erase her memory lest she burn up ) . The Doctor ' s hand turned into a duplicate of the Doctor apart from having only one heart as opposed to two , being unable to regenerate and having the lifespan of a human . ( TV : " Journey ' s End " ) In 1994 Alaska , the reviving Permian s inadvertently used their bioelectric fields to fuse together the bodies of nearby wildlife ( such as seals and walrus es ) into monstrous hybrids which attacked people out of pain and fear . Many of these were consumed by the Permians , and the rest died soon after the Permians did , as they required their energy to sustain them . ( AUDIO : " The Land of the Dead " ) The Karfelon Megelen became a Karfelon - Morlox hybrid by way of a scientific accident involving Mustakozene - 80 which fused his DNA with that of a Morlox creature . ( TV : " Timelash " ) The Eutermesan L ' da and the human Charlotte Pollard were genetically engineered into Kromon queens . ( AUDIO : " The Creed of the Kromon " ) The Hybrid . Davros attempted to transform some of his Dalek s into Time Lord hybrids , intending to fulfil an ancient Gallifreyan prophecy which warned of a Dalek - Time Lord Hybrid that would conquer Gallifrey . ( TV : " The Witch ' s Familiar " ) However , the Twelfth Doctor later claimed that the Daleks would never allow anything to be " half Dalek " and that the hybrid of Time Lord prophecy was " Me " . ( TV : " Heaven Sent " ) He later shared this theory with Me , at which point she countered with the theory that either he singly was the Hybrid or - if the Hybrid could be interpreted as being more than one being - the pair of the Doctor and his companion Clara Oswald . ( TV : " Hell Bent " )