As for Tsotha — men say that a dancing-girl of Shadizar slept too near the pre-human ruins on Dagoth Hill and woke in the grip of a black demon; from that unholy union was spawned an accursed hybrid men call Tsotha-lanti—
Hearken now, sons of snow, to an age, long ago, and the tale, boldly told, of the one!
Who was kin to both wyrm, and the races of man, with a power to rival the sun!
I am a human Dalek. I am your future!
Hybrid Dalek Sec, in the Doctor Who episode, "Evolution of the Daleks"