Harry was a military surgeon who was called in by The Brigadier when Dr Who seem to be having a lot of trouble with his regeneration (third doctor to fourth). As it turned out, Sergeant Benton has solved the problem by offering the Doctor a cup of coffee. This also worked for the Tenth Doctor when Rose's mother offered him a cup of tea. Apparently Time Lords just wake right up when you offer them a caffinated beverage. Harry travelled on the TARDIS with the Doctor and Sarah for a while, but he decided it really wasn't for him and left after "Terror of the Zygons," even refusing the Doctor's offer of a ride to London and taking the train instead.
Harry is played by Ian Marter. Born October 28, 1944, Died October 28, 1986.