William Hartnell (in-universe)

William Hartnell portrayed Dr. Who in the television series by 2065.

He was too busy to reprise the role in the theatrical film Dr. Who and the Daleks, leading to a new take on the Doctor being played by Peter Cushing in the film instead. (PROSE: Lady Penelope Investigates the stars of the Sensational new film Dr. Who and the Daleks!)