18 Years Ago, Doctor Who Introduced 2 of Its Biggest Actors Before Recasting Them in Different Roles

A particularly funny moment happened 18 years ago in the David Tennant episode, “The Fires of Pompeii.” In this episode, the Doctor and Donna Noble traveled to ancient Rome and discovered what really caused the eruption of Mount Vesuvius in 79 AD. During their adventure, they also encountered two characters who would later become significant to the show, including one who would eventually become a Doctor himself.








