; Date: April 3, 2017
The Weeping Angels were born before the beginning of the universe, apparently. Their curious trait is that when observed, they are quantum locked and cannot move, and can move freely when unobserved. They feed off time vortex energy created by sending victims into the past, and feeding off the time potential of the life which was lost.
Time of Angels, Flesh and Stone
Initial appearance - Don't Blink
What's the history of The Master? At least 24 bodies .... How did The Master become Missy? Creepy confessors from the Papal Mainframe - The Silence