Despite being set in an era of the Star Wars saga that viewers know very well, "Rogue One: A Star Wars Story" still packed in plenty of brand new ideas that surprised fans. The film introduced a few new vehicles and more than a few new characters into the mix, and it even added a few more stormtrooper variants to the mix. Among the new additions were the imposing and clad-in-black death troopers, the soldiers that served as the bodyguards for Imperial Director Orson Krennic (played by Ben Mendelsohn).

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A new featurette from "Rogue One's" upcoming home video release, revealed via MovieFone, goes behind the scenes to reveal how the death troopers were designed.

"At the beginning of the film, we wanted everyone to be genuinely scared," says co-costume desinger Glyn Dillon in the featurette. "We wanted to come up with something more menacing." That ended up being the death troopers.

The armor was inspired by an original painting by Ralph McQuarrie, the concept designer that came up with pretty much the entire look of the original Star Wars universe. That painting, which featured a tall, streamlined stormtrooper, served as the inspiration for the squad that's described in the video as the Empire's SEAL Team Six.

Set just prior to the events of 1977’s “Star Wars,” “Rogue One” follows a ragtag group of Rebels who undertake the dangerous mission to steal the design plans for the Galactic Empire’s planet-destroying new superweapon, the Death Star.

Directed by Gareth Edwards, “Rogue One: A Star Wars Story” stars Felicity Jones, Diego Luna, Ben Mendelsohn, Donnie Yen, Mads Mikkelsen, Alan Tudyk, Riz Ahmed, Jiang Wen and Forest Whitaker. “Rogue One: A Star Wars Story” releases digitally on March 24, while the Blu-ray and DVD combination bundle will be available April 4.