Weeping Angel (Hell Bent)

A group of Weeping Angels attempted to gain access to the Matrix hidden underneath the Capitol on Gallifrey during the Cloister Wars. They were attacked by the Cloister Wraiths, and became part of the Matrix hard drive. The Matrix tried to use the Angels to attack Clara Oswald whilst she and the Twelfth Doctor travelled through the Cloisters, but she was able to escape (TV: Hell Bent)