Like their leader, the Brigade sought to change the course of history by altering details in individuals' lives. According to the Tenth Doctor, most of these changes were "tiny" ones the universe could "compensate" for. However, if the Brigade's victim had a particularly great influence on the universe, the change would create an entire parallel world around that person. (TV: Turn Left) Time Beetles were identified by the Doctor as "one of the Trickster's Brigade". (TV: Turn Left)