The Thirteenth Doctor is a fictional character from the British science fiction television series Doctor Who. Portrayed by Jodie Whittaker, she is the first female incarnation of the Doctor, a Time Lord who travels through time and space in the TARDIS, a time machine that looks like a British police box. The Thirteenth Doctor debuted in 2017 and is known for her adventurous spirit and compassionate nature. As the Thirteenth Doctor, she faces various challenges and adversaries, including classic foes like the Daleks and the Cybermen. Her character emphasizes themes of inclusivity and diversity, reflecting a broader representation in the series. The Thirteenth Doctor's companions, such as Yasmin Khan, Ryan Sinclair, and Graham O'Brien, play significant roles in her adventures.