Tiriendis

Tiriendis is a fictional planet featured in the science fiction universe of the *Doctor Who* television series, created by the BBC. First introduced in the 1970s serial *The Time Warrior*, Tiriendis is depicted as a distant, icy world located in the far reaches of the universe. The planet is notable for its harsh, desolate environment, characterized by frozen landscapes, extreme cold, and a thin, toxic atmosphere.

The name "Tiriendis" originates from the Kaled warrior Tiri, who was exiled to the planet as punishment for his crimes. Over time, the planet became associated with his name, though its exact origins remain unexplored in the series. Tiriendis is also referenced in later *Doctor Who* stories, including *The Deadly Assassin* (1976), where it is mentioned as a location of historical significance to the Time Lords.

The planet’s role in the lore is largely symbolic, representing isolation, punishment, and the consequences of defiance against higher powers. Its remote location and hostile conditions make it a fitting destination for exiles or those seeking to escape the Time Lords' jurisdiction. While Tiriendis does not appear on-screen, its name and significance have been referenced in various episodes, contributing to the broader mythology of the *Doctor Who* universe.

Fans and scholars often discuss Tiriendis as part of the show’s deeper lore, particularly in relation to the Time Lords' legal and penal systems. Its mention in key episodes underscores its importance as a cautionary example within the series' narrative.