Tell me: have you have ever watch or read a story about a great hero (who saved the world or the history or the entire Universe) that was alone and had almost nobody around him? If there are any such stories they are anonymous. The reason is very simple: there was no one there to tell (us) the story. All the good stories have been told by others… and the Doctor stories are not exceptions.
In an interview published on Radio Times the writer Steven Moffat is establishing the priorities for the Doctor Who characters:
Doctor Who head writer Steven Moffat says the series tells the story of the Doctor’s companion, rather than the Time Lord himself, and that the thought of the Doctor travelling alone is “depressing” and “unhealthy”.
“The story of Doctor Who is always the story of the companion, it’s always their story,” said Moffat. “It was Rose Tyler’s story, it’s Amy Pond’s story – the story of the time they knew the Doctor and how that began; how it developed and how it ended.”
Current companions Amy Pond and Rory Williams – aka Karen Gillan and Arthur Darvill – are set to leave the show partway through the upcoming series, with Jenna-Louise Coleman starting a new chapter when she makes her first appearance in the Christmas special.
“The story begins again, not so much with the new Doctor, but with the new companion,” Moffat told BBC America. “It is their story. The Doctor’s the hero, but they’re the main character.â€