New footage for season nine of Doctor Who was unveiled to fans at San Diego Comic-Con Thursday.

The show’s show runner Steven Moffat, along with current Doctor, actor Peter Capaldi, Jenna Coleman and the show’s newest villain, Michelle Gomez, who will star as the Mistress, took the stage to release a new trailer.

The trailer featured footage of aliens, planets and the Doctor playing the guitar, and ended with a shot of Game of Thrones actress Maisie Williams, who will be featured as a guest star on this season of the show.

Gomez’s character has been re imagined, as in years past the Mistress has been a male character, known as the Master. Peter Capaldi defended the show’s choice, which has been the source of controversy for some longtime fans of the show when he said, “A lot has been made of the agenda change, but I really think people should applaud Melissa for taking this role and filling it so completely.”

According to an article on The Guardian, fans had been waiting for hours and even days, in some cases, when the event hall opened and the room stayed full all day, with fans staying to see the day’s worth of panels and events.

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