Doctor Who
Thirteen actors have headlined the series as the Doctor. The transition from one actor to another is written into the plot of the show with the concept of regeneration into a new incarnation, a plot device in which a Time Lord "transforms" into a new body when the current one is too badly harmed to heal normally. Each actor's portrayal is unique, but all represent stages in the life of the same character. Together, they form a single lifetime with a single narrative. The time-travelling feature of the plot means that different incarnations of the Doctor occasionally meet. The Doctor is currently portrayed by Jodie Whittaker, who took on the role after Peter Capaldi's exit in the 2017 Christmas special "Twice Upon a Time".
Rory Williams
Rory Williams is a fictional character portrayed by Arthur Darvill in the long-running British science fiction television series "Doctor Who". Having been introduced at the start of the 5th series, Rory joins the Eleventh Doctor (Matt Smith) as a companion in the middle of Series 5. As Amy Pond's fiancé, Rory is initially insecure because he believes Amy secretly loves the Doctor more. Later, however, he proves to be a hero in his own right and he and Amy get married. The couple conceive a daughter aboard the Doctor's time machine, the TARDIS, while in the time vortex, but their baby is kidnapped at birth. In "A Good Man Goes to War", Rory and Amy discover their time-traveler friend River Song is actually their daughter Melody Pond. The Doctor and River marry in "The Wedding of River Song", and Rory becomes the Doctor's father-in-law.
In "The Angels Take Manhattan", the fifth episode of the seventh series, he and Amy are transported back in time by a Weeping Angel, leading to the couple's departure from the series.