While “Game of Thrones” fans are eagerly awaiting the return of Arya Stark (Maisie Williams) in Season 6, “Doctor Who” fans are eagerly awaiting the actress’ arrival in Season 9. After months of speculation, producers finally dropped some hints about who she will play in the hit science-fiction television series.

Previously, the actress showed up at the end of the first trailer for Season 9 shown at the San Diego Comic-Con. She removes her mask to reveal herself to The Doctor (Peter Capaldi), and he immediately recognizes her. This prompted many fans to wonder whether Williams would be playing a character previously introduced on the show with a new face -- something that’s not uncommon in the world of “Doctor Who.”

Now, it appears executive producer Steven Moffat is hoping to quell those rumors. Speaking during the BBC America day at the Television Critics Association press tour, Moffat revealed some key details about Williams’ character.

“One thing I think is worth saying because it keeps coming up as an issue: She is not playing a returning character,” Moffat said (via IGN). “She is a brand-new character. She’s not someone from The Doctor’s past -- unless I’m lying. ... It’s a significant role. We are not throwing her away. You know, we are not just getting the star value and doing nothing with it. It’s a great part, and she’s terrific in it. But I would say it will develop in unexpected ways.”

According to Cinemablend, this isn’t the first time that the showrunner has teased the 18-year-old actress’ role in the coming season. When the announcement that Williams would have a significant guest role on “Doctor Who” dropped in March, Moffat had this to say:

“We’re thrilled to have Maisie Williams joining us on ‘Doctor Who.’ It’s not possible to say too much about who or what she’s playing, but she is going to challenge The Doctor in very unexpected ways. This time he might just be out of his depth, and we know Maisie is going to give him exactly the right sort of hell.”

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