Dalek (Hell Bent)
From Tardis Wiki, the free Doctor Who reference
A Dalek attempted to gain access to the Matrix hidden underneath the Capitol on Gallifrey. It was attacked by the Cloisters and it became a part of the Matrix hard drive, being "filed". It was encountered by the Twelfth Doctor and Clara Oswald whilst they travelled through the Cloisters, where it asked to be exterminated. (TV: Hell Bent)
