Doctor Who changed by companion
A change of companion for the Doctor in 'Doctor Who' will cause him to change who he is
The Doctor will be a "different man" once he gains a new companion in 'Doctor Who'.
The show's writer Steve Moffat claims the Time Lord will change after losing sidekick Amy Pond, played by Karen Gillan.
He told SFX magazine: "He becomes a slightly different man. He dresses differently."
"We're going to do the story properly of the Doctor having lost a friend. It's the story of how all that affects him."
The Doctor - played by Matt Smith - will be joined by Jenna-Louise Coleman's character Oswin Oswald, who made her debut on Saturday night's episode (01.09.12).
The return of the series gained 6.4 million viewers.
It was recently revealed Jenna-Louise - who is a foot smaller than Matt - has to stand on old phone books when filming close-up scenes with the Doctor.
A source from the show said: "It's funny that Jenna will be travelling around the galaxy in a phone box and now has to use phone books to stand on to look taller."
The 26 year-old ex-'Emmerdale' star will return to the series full-time in the Christmas episode.