The classic sci-fi show Doctor Who follows the title Doctor, who travels through time and space. Many actors have taken on the main role, as the Doctor often regenerates into a new form. Jodie Whittaker took over the role from 12th Doctor Peter Capaldi in 2017, with her first full episode premiering the following year. She made history as the first woman to take on the role, but she also brought a light touch and intelligent, energetic fun to the show.