Luc Besson’s passion project, Valerian and the City of a Thousand Planets, arrives in theaters less than two months from now, but that doesn’t mean it can’t still add a member to its cast. Production officially wrapped last June, but Elizabeth Debicki has now joined the film for a voiceover role.

It seems odd to do this so close to the film’s release, but Variety reports that she’ll provide the voice for “one of the characters” in the movie, so no additional scenes will need to be shot. It’s probably a small role without a ton of dialogue — my money’s on one of those tall, hairless pale aliens that ask Valerian and Laureline for help. It’s also worth noting that, if you watch the trailer, that voiceover sounds an awful lot like Cate Blanchett, although there’s nothing on any cast list to indicate that she’s in the movie. Debicki does sound a lot like her, especially during her recent turn in Guardians of the Galaxy Vol. 2. SO maybe that means she’s been the voice in the trailers all along? Or maybe it means that Debicki has been brought on to replace Blanchett for some reason.

Valerian (Dane DeHaan) and Laureline (Cara Delevingne) are special operatives for the government of the human territories charged with maintaining order throughout the universe. Valerian has more in mind than a professional relationship with his partner, blatantly chasing after her with propositions of romance. But his extensive history with women, and her traditional values, drive Laureline to continuously rebuff him.

Under directive from their Commander (Clive Owen), Valerian and Laureline embark on a mission to the breathtaking intergalactic city of Alpha, an ever-expanding metropolis comprised of thousands of different species from all four corners of the universe. Alpha’s seventeen million inhabitants have converged over time- uniting their talents, technology and resources for the betterment of all. Unfortunately, not everyone on Alpha shares in these same objectives; in fact, unseen forces are at work, placing our race in great danger.

Valerian and the City of a Thousand Planets hits theaters July 21.

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