August 22, 2014 10:09 AM EDT

The British sci-fi television show Doctor Who premiered in 1963 and stars a time-traveling alien called The Doctor. As a plot device, the Doctor is able to regenerate himself into an entirely “new,” person which allows for the show’s producers to conveniently change the lead actor as they see fit, with the thirteenth and latest incarnation of The Doctor played by Peter Capaldi.

Take a look back at all the actors who’ve played the Doctor over the years.

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