TMDb/Doctor Who TV Peter Capaldi defends Doctor Who's evolving cast, praising Jodie Whittaker and Ncuti Gatwa while reflecting on the show's cultural growth. April 26, 2026 AceShowbiz - Doctor Who alumnus Peter Capaldi has spoken out in defense of the series' evolving cast, highlighting his support for the actors who followed him in the iconic role of the Doctor. Nearly ten years after concluding his portrayal as the Twelfth Doctor, Capaldi addressed fans who often take the BBC show very seriously.