The Eighth Doctor is a science project character.
 He, along with the First, Fifth, Sixth, and Seventh Doctors, help the Thirteenth to undo her forced regeneration by the Master
 In the 2013 live-action mini-episode "The Night of the Doctor", the Eighth Doctor salutes companions Charley, C'rizz, Lucie, Tamsin and Molly before he regenerates into the War Doctor

