Copy

After Petronella Osgood explained how 'everything' in the UNIT database had been 'heavily corrupted with huge chunks missing', Cleo Proctor joked that it sounded "like [her] laptop after [her] brother downloaded that dodgy copy of Pirates of the Caribbean 4". (AUDIO: Recruits)

River Song described Clara Oswald's echoes as copies of the original. (TV: The Name of the Doctor)

When the Twelfth Doctor was mortally wounded while trapped in his confession dial, he deduced that the teleporter would, like all the other rooms, have reset and have a copy of him stored in its hard drive. By generating new copies of himself for 4.5 billion years, he was able to punch through the dial's Azbantium wall. (TV: Heaven Sent, Hell Bent)

Davros designed Falkus's main computer to hold a copy of his mind. After he was thought to have been destroyed, the early Daleks followed their creator's blueprints, unknowingly recreating Davros. During the Last Great Time War, an alternate Davros imprisoned on Falkus exploited the copy's presence within the computer to take partial control of Falkus. (AUDIO: A Genius for War)