Macduff

Macduff was a fictional character created for the Shakespeare play Macbeth. When time began to break down, Macduff was brought to life in order to kill the real Macbeth, due to time's natural healer trying to fix it by using the emotional imprints of people's reaction to the play, believing it to be the real version of events. His plan to kill Macbeth was thwarted by the Sixteenth Doctor and Chrissie Finch, causing him to vanish when time corrected itself. (DW: The Screams of Terror)