'Doctor Who' Stars Bradley Walsh and Tosin Cole to Exit the TARDIS

Doctor Who giveth, and Doctor Who taketh away. As fans count down the days until New Year's special "Revolution of the Daleks" premieres, the show announces that two members of the TARDIS crew will be leaving the cast following after the holiday installment.

Given that rumors were swirling throughout Season 12 that the TARDIS crew was headed for a major shake-up, most fans probably aren't that shocked by the official confirmation that stars Bradley Walsh and Tosin Cole will be exiting the series following "Revolution of the Daleks". In truth, it's something that feels like it's been coming for a while now. (Cole's character Ryan has expressed concern multiple times about the way his real life is slipping away from him while he's on adventures with the Doctor onscreen several times.)

And as much as fans have enjoyed the trio of Graham, Ryan, and Yaz, Doctor Who has struggled with the three-companion format and often failed to give these characters anything that might be called individual arcs or emotional interiority. While Graham and Ryan's relationship was a cornerstone of Jodie Whittaker's first season as the Doctor, the pair largely faded into the background of Season 12. And the show has yet to really figure out what to do with Mandip Gill's Yaz - which is, at least, something the show will now have the chance to correct if she will indeed be the last companion standing.