Kadiatu Lethbridge - Stewart Kadiatu Lethbridge - Stewart was the only existing prototype of a next - generation human super soldier program conducted in the years following the Thousand Day War ( 2086 - 2088 ) . Kadiatu was related by adoption to a branch of the Lethbridge - Stewart bloodline which arose from an affair that Alistair Gordon Lethbridge - Stewart conducted during his posting as a lieutenant in Africa . Kadiatu was his great - great - great - great - granddaughter . Biography . Kadiatu was born in the Imogen R & D facility in Leipzig . After the project was destroyed at the behest of the underworld figure the Angel Francine , she was adopted as a three month old baby by the man responsible , Brigadier Yembe Lethbridge - Stewart , when he found himself unable to euthanase her . She grew up in Makeni , a hick town in the West African forest , surrounded by veterans of the Thousand Day War . As a child , she was subjected to psychological suppression techniques to minimise the expression of her ubersoldaten qualities . Around the age of eight she was rescued from drowning when her father hauled her out of the water by her hair . ( PROSE : " Transit " ) In the mid 2110s , she was an engineering student at the Lunaversity , attempting to convert the complex mathematics of the Interstitial Mass Transit System into a basis for functional time travel . Before her first encounter with the Seventh Doctor she was about half a year away from establishing the theoretical basis for a working prototype . She constructed a primitive time craft powered by nuclear detonation as part of a corporate research project . She promptly stole it . Unknown to her , using the time craft punched holes in the fabric of space - time , creating anomalies and allowing all manner of species to move through space and time . ( PROSE : " Set Piece " ) In 1754 , the Seventh Doctor found her in a feral state on a British slaver ship . She had killed everyone on board . He sedated her and took her to the People ' s Worldsphere , where he asked aM ! xitsa to watch over her . He returned three months later and placed her fate in the hands of Bernice Summerfield , who decided she could be rehabilitated instead of euthanised . Kadiatu subsequently developed safer time travel technology and became a temporal agent for the People , with aM ! xitsa accompanying her . ( PROSE : " The Also People " ) Kadiatu later attended Bernice Summerfield and Jason Kane ' s wedding in Cheldon Bonniface on 24 April 2010 , where she met her adoptive ancestor Alistair Gordon Lethbridge - Stewart . ( PROSE : " Happy Endings " ) She later gave Bernice a temporal lift to the house on Allen Road in 1997 . ( PROSE : " The Dying Days " ) She reunited with Bernice Summerfield for a trip to Earth in 2606 . The two women uncovered a plot involving a clone of the President of Earth taking the place of the President of Earth . Kadiatu killed a clone of herself during this debacle . ( AUDIO : " The Final Amendment " ) Characteristics . Kadiatu was tall , physically well - conditioned and dark skinned . She had coal black irises . She had lower baseline metabolic and oxygen requirements , manifesting in slowed breathing and heart rates , that would lead to coma - like conditions in ordinary humans . Her physical and mental reflexes were heightened with her strength and endurance . She had a functional appendix , which allowed her to derive peak nutritional value from a wide variety of foods . As a trade off , she would eat more frequently . Her heart , liver and lungs were also larger than standard human organs , while the robustness of her immune system was increased along with her bone density . As a student she wore cotton hair extensions , through which were woven data crystals and electronic counter measure devices . Despite being the child of a military family , she had no combat training , but found herself responding with instinctive proficiency in unarmed combat and the use of arms . She showed no ethical or moral reaction to taking a life in combat .