The Doctor (Doctor Who) footage. Tom Baker did reappear, but as "the Curator", an ambiguously different character who he was not credited for playing. A voice actor, John Guilor, recorded a line of audio impersonating the First Doctor, for which he was credited as "Voice Over Artist". In other multi-Doctor stories, the multiple actors are all credited as "The Doctor", the exception being "The Three Doctors" (1972–73), which credited William Hartnell, Patrick Troughton and Jon Pertwee as "Doctor Who" as the 1972 serial preceded the practice of crediting the character as "The Doctor". In "Human Nature" (2007), the plot involves the Tenth Doctor altering
The Doctor (Doctor Who) Time War, albeit much earlier than during "The End of Time". The mini-episode presented him as a conscientious objector to the war who regenerated under controlled circumstances into the War Doctor (John Hurt), a previously unseen incarnation created retroactively by Davies' successor as head writer, Steven Moffat, for the 50th anniversary special "The Day of the Doctor". The Tenth and Eleventh Doctors explained that Hurt's regeneration was not The Doctor because his actions during the Time War were a betrayal of the promise that name symbolized. "The Day of the Doctor" revisited the last day of the Time War after