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. (TV: The Impossible Astronaut)