"I never really worried about tying his history together," explained Russell T Davies in an interview for the latest issue of Doctor Who Magazine.
"I was convinced he had to have a metal hand, because it was so clearly blown off in Revelation of the Daleks. So no, I didn't do any research as such. I didn't rewatch Genesis, because I wanted to act off my memories."
"Somehow, that seems a more creative state to be in. I did worry that we never had a proper explanation of his injuries, but then realised that Genesis never did that either, so it was good company to be in! Although I did write a sort of creation story..."
Prosthetics Designer Neill Gorton added "There was one scene where you were going to see an explosion, and Davros was injured."
"We weren't actually going to show his face burnt and disfigured in its full gory glory, because it would have been just a little extreme, so I think you were only going to see glimpses of his head, with smoke rising, and his hair burnt off..."
