 In 1980 they appeared in the novelization of "The Keys of Marinus", "Doctor Who and the Keys of Marinus", written by Philip Hinchcliffe and published by Target Books.The Voord later appeared in a comic strip story "The World Shapers" written by Grant Morrison within "Doctor Who Magazine" issues 127 through 129.In this story, involving the Sixth Doctor and Peri Brown, the Voord are revealed to be evolving into the Cybermen.