Each of the 6 serials in The Key To Time story arc of the classic 1978 Doctor Who TV series appears to focus and reference the future (2005+) Doctor Who actors in a chronological fashion. I believe serial 1: The Ribos Operation may show Christopher Eccleston, The Pirate Planet shows something about David Tennant, etc..
Serial 4: The Androids of Tara could show Peter Capaldi and aspects of his 3 years as The Doctor (as well as other roles he was involved in). A major hint in this story is the outfit of Romana. The Purple and Green colors could show DC Comics' The Joker! Capaldi was in a DC Comics based film, 2021's The Suicide Squad as The Thinker. Actor Jared Leto played Joker in the 2016 Suicide Squad movie. There is a relationship to another comic book associated franchise dealing with robots and androids. That is the Terminator. Leto was in the 1990's ABC TV drama My So Called Life with actress Claire Dannes who was in Terminator 3 with Nick Stahl in 2003. 11th doctor Matt Smith was in Terminator Genisys in 2015.
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