We're kicking it back to 1974 to consider Harry Sullivan, and the more recent companion Rory Williams.
PLANET OF ORIGIN: Earth
DOCTOR: Fourth
Harry is a surgeon and lieutenant in the navy, attached to UNIT, which is where he first met the Doctor. Called in to check the Doctor over after his regeneration, Harry soon leaves to travel around the universe for a season. Like most of the male companions in early Doctor Who, Harry's an action man, with Sarah Jane Smith going so far as to call him “James Bond”. But he's also a bit of a bumbler, clumsy enough to reduce the Doctor to shouting, and stereotypically British in a very amiable way. Harry is one of those companions who chose to leave the Doctor, although wisely choosing to take the train rather than trust the TARDIS’ sense of direction.
PLANET OF ORIGIN: Earth
DOCTOR: Eleventh
In his first series, Rory cut something of a pathetic figure. Trailing after his fiancé while she works off her marriage jitters across the universe, he then ends up being erased out of history and returns to life as an Auton. But don’t count Rory out – as part of the first married couple of companions, as well as the first father of a companion to also be a companion, he provides a grounded balance to the excitable duo of Amy and the Doctor. The Last Centurion is not only dedicated to his family (guarding over Amy for thousands of years, marching to war to find his daughter). He’s one of the most dedicated Doctor Who companions ever. After all, many companions have died while assisting the Doctor, but none quite so many times as Rory. And he kept going back for more.
Doctor or nurse? Who made the better companion?
You decide!
Let us know your reasons in the comments below.