The Doctor (Doctor Who) credits Tennant as "Doctor Who". The credit reverted to "The Doctor" for 2005's Christmas special "The Christmas Invasion" and all subsequent stories at Tennant's request. Matt Smith, Peter Capaldi and Jodie Whittaker have continued to be credited as "The Doctor". John Hurt plays a mysterious past incarnation of the Doctor in the 50th anniversary special "The Day of the Doctor", with minor roles in "The Name of the Doctor" and mini-episode "The Night of the Doctor", created as a "mayfly Doctor" by Steven Moffat. In the television episodes, he is credited as "The Doctor", but he is introduced as "The
D. M. S. Watson D. M. S. Watson David Meredith Seares Watson FRS (18 June 1886 – 23 July 1973) was the Jodrell Professor of Zoology and Comparative Anatomy at University College, London from 1921 to 1951. Watson was born at Higher Broughton, near Salford, Lancashire, the only son of David Watson, a pioneering metallurgist. He was educated at Manchester Grammar School and the University of Manchester. He specialised in geology and began to study plant fossils in coal deposits. In 1907, his final year, he published an important paper on coal balls with Marie Stopes (who had an early career as a paleobotanist);