It’s almost certain that anyone reading this list of "Doctor Who"'s Doctors ranked will disagree with at least some of our rankings. That's because there are few things in sci-fi fandom more subjective (and divisive) than the identity of your favorite Time Lord, your choice likely to be shaped by when you were born, when you discovered the show, and, of course, personal preference.
In theory, all of the "Doctor Who" Doctors are fundamentally the same person, thanks to the Time Lords' ability to regenerate — an ingenious plot device that allows the production team to recast the show's lead role every few years Even so, every actor who's taken on the role has brought something different to Gallifrey's most famous export — and every single incarnation has had their ups and downs during their stay on board the TARDIS.
