Beginning with the most important thing first, this is the Tenth Doctor, as played by David Tennant.
The Doctor’s actual name is a mystery – he’s known only as “The Doctor”. At various times in the episodes, someone will ask “Doctor who?“, thus giving the show its name. He doesn’t like weapons, so pretty much the only piece of equipment he carries is his trusty ‘sonic screwdriver’, a gadget that (presumably) unscrews things, but also does a bit of everything else. The Doctor is the last of his kind, a species of time-traveling aliens known as ‘Time Lords’.
He travels in his TARDIS.
A product of Time Lord technology, a properly maintained and piloted TARDIS can transport its occupants to any point in time and space. The interior of a TARDIS is much larger than its exterior, which can blend in with its surroundings through the ship’s chameleon circuit. In the series, the Doctor pilots an unreliable TARDIS, whose chameleon circuit is faulty, leaving it locked in the shape of a 1950s-style London police box after a visit to London in 1963. Unsurprisingly, it’s often referred to as the ‘blue box’.
The Doctor customarily travels at least one human companion, most commonly a female. These women are usually head-over-heels with him (well, look at his picture again and see if you blame them!) but he pretty much just wants a friend and isn’t interested in anything more.
In the first and second seasons, it was Rose Tyler.
Third season, it was Martha:
Fourth season, it was Donna (my personal favorite!)
And that’s it. That’s everything you need to know to jump in and enjoy the episode “Blink”. (We’ll talk Daleks later…)
No wait – one more thing – you gotta have the theme song stuck in your head….
To anyone who isn’t Bonnie, why yes. I am shamelessly using my blog to corrupt my friend into becoming a Who-fanatic!