6. Jon Pertwee (The Third Doctor, 1970-1974)

As a result of pop-culture trends in the 1970s, Jon Pertwee brought an action-star take to Doctor Who. He loved gadgets, cars, cocktails, and practicing a Gallifreyan version of kung fu. In a twist in which the Doctor lost access to his time machine/spaceship, the TARDIS, Pertwee's version was grounded on earth. His action skills served him greatly and cemented the Doctor's role as humans' biggest defender, something that would carry on in following seasons.