`Doctor Who' is a classic science-fiction programme with a cult following. The Doctor is called a `Time Lord', a time-travelling scientist from a far off planet, who travels through time and space in a shop known by the acronym TARDIS. A TARDIS is a machine that is larger on the inside than the outside and is supposed to change its appearance based on its surroundings. The Doctor is also able to evolve his biology, so he appears as many different people throughout the series. The Doctor loves Earth, so he makes many trips here to save the planet, or to enlist earthlings to help him with tasks in the galaxy.
The Doctor arrives in New York to take down a masked superhero with the help of Nardole.
The Tenth Doctor is an incarnation of the Doctor, the main protagonist of the BBC science fiction television franchise Doctor Who. He is played by David Tennant in three series as well as nine specials. As with previous incarnations of the Doctor, the character has also appeared in other Doctor Who spin-offs.
The Fifteenth Doctor will be the next incarnation of the Doctor, the protagonist of the BBC science fiction television programme, Doctor Who.