Doctor Who has traditionally featured modern-day companions, but fans have always wondered whether historical characters could join The Doctor.

They were joined by Doctor Who royalty in the form of Catherine Tate, who played assistant Donna Noble, and Jenna Coleman, who starred as Clara Oswald, opposite former Time Lords Matt Smith and ...

Doctor Who, of course, has history with this: Clara Oswald arrived ‘early’ before getting official companion status, while Peter Capaldi showed up in ‘The Fires of Pompeii’ as Lucius ...