Horde of Travesties

The  Horde of Travesties fought in the Last Great Time War. The Tenth Doctor mentioned the Horde of Travesties as one of the horrors that would be released when broke the time-lock on the war, along with the Nightmare Child, the Skaro Degradations and the Army of Meanwhiles and Neverweres led by the Could've Been King. (TV: The End of Time) It is also mentioned (probably) in dialogue of time lords at the beginning of the episode: "The time itself ressurecting them, to find new ways of dying over and over again. A Travesty of life."