 Meanwhile, Kate's personality becomes more Dalek-like, and she eventually unites with the Dalek, who bargains for the use of a time travel technology, with Earth as the bargaining chip.It is revealed that Kate is a form of Dalek-human hybrid, the result of an attempt by Daleks who came to Earth millennia earlier (because of the Time War) and injected a "Dalek Factor" into humanity.However, only a few individuals retained it in the present day.