Sao Til is a non-canonical character from Tonight's the Night. Tim Ingham dressed up as him, wearing a blue mask, a black bowler hat and a huge robotic arm. He and John Barrowman roleplayed in the TARDIS set, pretending to be Jack Harkness and Til. They had a faux-battle, before they were interrupted by David Tennant, who asked them to get out of "his TARDIS".