10 Doctor Who Characters Who Can Never Die
2. The Doctor
This entry was originally supposed to be a bit of a cheat - as in, the show must go on, and you can't have Doctor Who without the Doctor. Basically, by virtue of their starring role, our favourite renegade Time Lord has some truly impenetrable plot armour, a meta form of immortality that ensures they'll never be killed off.
And while that's obviously true, the Doctor is also immortal in-universe too... sort of.
With that pesky regeneration limit being removed post-Timeless Child, the Doctor now has infinite lives, so even if they do suffer an injury that would normally be fatal (something that, presumably, will happen in Jodie Whittaker's upcoming finale), they can just respawn. Before the Chibnall era, those respawns were limited, but not anymore! That switch has been toggled to 'infinite'.
There are, of course, a handful of ways to prevent the regeneration process from occurring, but these are so rare that the Doctor can strut their stuff without ever having to worry about paying a visit to the great TARDIS in the sky.
That is, until a new showrunner comes along and rewrites all the rules. Again.