Carter (Let's Kill Hitler)

Carter was the captain of the Teselecta. (DW: Let's Kill Hitler) He strongly believed in bringing the worst criminals in history to justice and giving them the "hell" they deserved. His crew often had to make him show compassion to the families of those they were after, such as Melody Pond's parents. Carter made sure to double-check the records of the timelines of those involved with their work, making sure no signifigant changes were made to the timeline and to preseve any fixed point in time. He effectively saved the Eleventh Doctor's life during the Time Lord's "farewell tour", offering him a favour as thanks for the Doctor's unending crusade of justice. Per the Doctor's request, Carter had the Teselecta copy the Time Lord and beam him in. Allowing the Doctor control of the ship to fullfill the circumstances of his "death", Carter had the Tesselecta go to 22 April 2011, where River Song was to kill the Doctor. Following the "murder", Carter let the Doctor out of the Tesselecta while he and his crew kept this escapade quiet from the Justice Department, not only to avoid adverse consequences, but to keep the Silence from constantly trying to kill the Doctor. (DW: The Wedding of River Song)