Doctor Who is a television series.
Doctor Who . Doctor Who has also spawned numerous spin-offs , including comic books , films , novels , audio dramas , and the television series Torchwood ( 2006 -- 2011 ) , The Sarah Jane Adventures ( 2007 -- 2011 ) , K-9 ( 2009 -- 2010 ) , and Class '' ( 2016-present ) , and has been the subject of many parodies and references in popular culture . Doctor Who spin-offs refers to material created outside of , but related to , the long-running British science fiction television series Doctor Who . The Time Lords are a fictional , ancient extraterrestrial people in the British science fiction television series Doctor Who , of which the series ' protagonist , the Doctor , is a member .