Gramoryans were paradox eaters.
The Time Lords prevented their activities before the Time War, but when the war was over they began to run amok. They collected significant historical figures and they would kill anyone or anything as insignificant. A group of Gramoryans travelled to the 16th century to capture King Henry VIII. They were attracted to the time period because the Monk had disguised himself as the King, and was proceeding to meddle in history. (AUDIO: Divorced, Beheaded, Regenerated)