Canton Delaware

Canton Everett Delaware III was an ex-FBI agent who accompanied the Eleventh Doctor during the latter's visit to the United States of America in 1969, having been kicked out of the Bureau for wanting to marry an African-American man. He served as the Doctor's fourth companion (as he already had Rory, River and Amy) during his investigation of the Silence. He quickly came to respect the Doctor during their quest to defeat the Silence, hoping to have another adventure with him in the future.

Biography

The Silence

Canton was an FBI agent who was forced to quit the Bureau because they did not condone his homosexual relationship with a black male. Six weeks after his resignation, on 8 April 1969, he met with President Nixon at the White House to investigate mysterious telephone calls Nixon was receiving. In the Oval Office, Canton met the Eleventh Doctor and allowed him to help in the investigation. Canton travelled with the Doctor to Florida in search of the little girl who had been calling. Rory Williams explained to Canton how the TARDIS travelled through both time and space and was bigger on the inside.

The Silence arranged for the companions to be declared fugitives and the Doctor held prisoner in Area 51. Canton pretended to lead the hunt for Amy, Rory and River to prevent the Silence from realising their presence was known. After the Doctor was sealed in a dwarf star alloy prison that prevented anything getting out, he and Canton revived the captured Amy and Rory, recovered River Song and departed in the TARDIS — which had been hidden in its invisible form behind the Doctor as the prison was constructed — to track down the little girl.

After Canton shot one of the Silence, he used Amy's video phone to record the Silence saying, "You should kill us all on sight." The Doctor arranged for that message to be broadcast during Neil Armstrong's moon landing; the Silence essentially ordered every human who ever saw the footage to murder them and forget they'd done it. As the Doctor departed, he suggested that Nixon allow Canton to get married, but the discovery that Canton intended to marry a black man prompted Nixon to reconsider the idea.

Meeting again

In 2011, Canton was invited by a future version of the Doctor to the place where the Doctor would be shot and killed. There he met River, Amy and Rory again, told them that it was definitely the Doctor and that he was really dead. He left them gasoline to burn the Doctor's corpse. The Doctor had secretly used a Teselecta duplicate to fake his own death, and the gasoline barely singed it. Canton also told them that he wouldn't see them again, but they would see him. This was before they were going to meet his younger self later in their personal timelines.

Biography from the TARDIS Data Core article, licensed under CC-BY-SA