TheHaloTV series from Showtime is finally gaining some momentum, as the show has confirmed most of its cast as well as a release window for its series premiere. As announced by Showtime, theHaloTV series will premiere in the first quarter of 2021, with filming expected to start later this year.

As for the cast, we already knew thatOrange is the New BlackandThe WirestarPablo Schreiber is playing Master Chief, but now some other important roles have been cast as well. Cortana, Master Chief’s faithful AI companion and an iconic character from the video game series, will be played by British actress Natascha McElhone. McElhone, perhaps best known for her roles inCalifornicationandDesignated Survivor, will also be playing Dr. Catherine Halsey in theHaloTV series.

halo showtime tv series casts cortana

RELATED:5 Superpowers Master Chief Keeps Hidden in Halo

Additionally, Bokeem Woodbine has been cast as Soren-066, who has appeared inHalomedia outside of the video games, and Shabana Azmi has been cast as Admiral Margaret Parangosky. Bentley Kalu, Natasha, Culzac, and Kate Kennedy have all been cast as brand new Spartans created specifically for the TV show, named Vannak-134, Riz-028, and Kai-125, respectively.

This is certainly big news for theHalo TVseries, but much of the show is still shrouded in mystery. Specific plot details are still unavailable, though that’s not surprising since filming hasn’t even started.

What we do know about theHaloTV series is that it istaking inspiration fromGame of Thrones, and that the first season will be at least 10 episodes. We also know that director Rupert Wyatt has abandoned the project, replaced by Otto Bathurst.

Beyond those details, there’s not much else we know definitively about theHaloTV series from Showtime. However, now that we know that the show will likely start filming by the end of the year with a planned premiere date of early 2021, more details should start coming to light. And if theHaloTV series lives up to expectations, one has to imagine that the door would then be wide open for television adaptations of some of Microsoft’s other IP.