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
Doctor Who: The First Doctor Adventures Doctor Who: The First Doctor Adventures The First Doctor Adventures is a Big Finish Productions audio play series based on the British television programme "Doctor Who". It sees the return of David Bradley as the First Doctor, a role originated by William Hartnell from 1963 to 1966, as well as by Bradley on television in the episodes "The Doctor Falls" and "Twice Upon a Time". David Bradley also portrayed William Hartnell in the BBC bio-drama, "An Adventure in Space and Time". Also appearing are Claudia Grant as Susan Foreman, Jemma Powell as Barbara Wright and Jamie Glover as Ian Chesterton.