Regeners

Regeners, short for regenerators, are a fictional group of characters in the British science fiction television series Doctor Who. They are a race of humanoids known for their ability to regenerate, allowing them to survive fatal injuries by transforming into a new form. This process also often results in significant personality changes.

The most prominent Regenerers in Doctor Who are the Time Lords, a highly advanced alien species from the planet Gallifrey. The Doctor, the series' main protagonist, is a Time Lord who has regenerated numerous times throughout the show's history. Each regeneration of the Doctor is portrayed by a different actor, allowing the character to evolve while maintaining a consistent identity.

Regeneration is triggered by critical injury or the natural aging process in Time Lords. During regeneration, the body undergoes a molecular transformation, resulting in a new appearance and often a different personality. Time Lords are typically limited to twelve regenerations, although this limit has been altered and circumvented in the series.

The concept of regeneration has been a central aspect of Doctor Who since the 1960s, allowing the show to continue with a new lead actor while maintaining continuity. This unique feature has contributed to the series' longevity and popularity. Other characters in the Doctor Who universe have also exhibited regenerative abilities, but the Time Lords remain the most well-known and prominent examples.