He said: "I'll have done 40 episodes of Doctor Who..."
Doctor Who Season 10 premieres April 15 on BBC One and BBC America. "The Doctor decides to take her on as a pupil and there's a lot of jousting between them..."
Mackie will first be seen as the new companion of Doctor Who (Peter Capaldi) in the upcoming 10th series of the programme. The final shot of the promo shows regeneration energy wafting off of the Doctor's hand.
Moffat did praise "proper new star" Pearl Mackie, who will be the Doctor's new sidekick Bill Potts.
"We do not expect a pat on the back", he says. "That is the correct answer to what we have done!"
"[Being gay] is not the main thing that defines her character - it's something that's part of her and something that she's very happy and very comfortable with". Unlike the calculating, manic alien that is the Doctor, the human Companion is meant to be a touchstone for viewers.
Bradley misses game with injured knee, hopes to avoid DL
The injury first occurred Saturday when he lost his footing rounding the bases, causing him to miss Sunday's game. Bradley (knee) will be placed on the 10-day disabled list, Ian Browne of MLB.com reports.
Speaking ahead of the show's return, Mackie said that the fellow actress, who left her role as Clara Oswald in 2015, sent her flowers on her first day of filming along with some tips for the show. Sometimes she does wrong things, but for the right reasons. This go-round even the mercurial Tilda Swinton has been touted as a potential Doctor, but she's done very little television and probably isn't even interested in the role. "It is not because she is an interrogator, but because she is alive and curious".
Season 10 will also feature the return of John Simm as The Master and Michelle Gomez as Missy.
The writer, who is also standing down as executive producer, said he did not know who would be the 13th Doctor, deflecting questions to his replacement, Chris Chibnall. "But I can not reveal it".
"Sad, because it has been a great experience", he says of leaving the TARDIS, his dimension-hopping phone booth. 'I think people are going to fall in love'.
That said, the third season definitely gave him plenty to work with. Since 1966, the conceit that the Doctor can shape-shift into a new body and personality has been built into the show's DNA. Now that Capaldi is an icon to children, he's keeping his past as Malcolm Tucker, the foul-mouthed spin doctor on the British government satire "The Thick of It", in check. So watching someone do the job that you're about to do, brilliantly - all the companions have been fantastic - you'd be mad as an actor not to go "Oh that's good, I'm gonna have that".