Dr. Who

Doctor Who is a British science fiction television series that follows the adventures of the Doctor, an enigmatic, time-traveling alien known as a Time Lord from the planet Gallifrey. The Doctor explores the universe in a ship called the TARDIS, which appears as a British police box on the outside but is space and time capable on the inside. Throughout the series, the Doctor encounters various alien species, historical figures, and futuristic scenarios, often seeking to right wrongs and protect innocent beings. The Doctor is known for regenerating into new forms, allowing different actors to portray the character over time.