Peter Dougan Capaldi is a Scottish actor and director. He portrayed the twelfth incarnation of the Doctor in the science fiction series Doctor Who and Malcolm Tucker in The Thick of It, for which he received four British Academy Television Award nominations, winning Best Male Comedy Performance in 2010. When he reprised the role of Tucker in the feature film In the Loop, Capaldi was honoured with several film critic award nominations for Best Supporting Actor.

The Twelfth Doctor is an incarnation of the Doctor, the protagonist of the British science fiction television series Doctor Who. He is portrayed by Scottish actor Peter Capaldi in three series as well as four specials. As with previous incarnations of the Doctor, the character has also appeared in other Doctor Who spin-offs.