Second Doctor
The Second Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series "Doctor Who". He was portrayed by character actor Patrick Troughton.
Second Doctor
The Second Doctor would return to the series on three occasions: in 1973 for the 10th anniversary serial "The Three Doctors" (which also saw the return of William Hartnell as the First Doctor), in 1983 for the 20th anniversary special, "The Five Doctors", and once more in 1985 in "The Two Doctors".