Regeneration (Doctor Who)

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article may contain an excessive amount of intricate detail that may interest only a particular audience. Please help by spinning off or relocating any relevant information, and removing excessive detail that may be against Wikipedia's inclusion policy. (March 2022) (Learn how and when to remove this message) This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Regeneration" Doctor Who – news · newspapers · books · scholar · JSTOR (May 2022) (Learn how and when to remove this message) This article may be written from a fan's point of view, rather than a neutral point of view. Please clean it up to conform to a higher standard of quality, and to make it neutral in tone. (December 2023) (Learn how and when to remove this message) (Learn how and when to remove this message)

In the long-running British science fiction television series Doctor Who, regeneration is a biological ability exhibited by the Time Lords, a race of fictional humanoids originating on the planet Gallifrey. This process allows a Time Lord to undergo a transformation into a new physical form and a somewhat different personality after instances which would normally result in death. Regeneration has been used multiple times throughout the history of the show as a device for introducing a new actor for the lead role of its main character, the Doctor. Other Time Lords and similar characters have also regenerated, usually for narrative reasons, rather than casting.

Ncuti Gatwa has portrayed the Fifteenth Doctor since "The Giggle" (2023).