Nardole is a fictional character created by Steven Moffat and portrayed by Matt Lucas in the long-running British science fiction television series Doctor Who. He is a companion of the Twelfth Doctor, an incarnation of the alien time traveller known as The Doctor, played by Peter Capaldi. Nardole initially appeared in the 2015 Christmas special "The Husbands of River Song", as a companion of River Song, before returning in the following episode "The Return of Doctor Mysterio", having become the Doctor's companion in the meantime, later alongside Bill Potts, who comes to mistakenly believe Nardole to be a robot.

Matthew Richard Lucas is an English actor, comedian, writer, and television presenter. He is best known for his work with David Walliams on the BBC sketch comedy series Little Britain (2003–2006) and Come Fly with Me (2010–2011).