Death Troopers

Death Troopers are antagonists in the 2016 movie Rogue One: A Star Wars Story. They are an elite variant of the Galactic Empire's stormtroopers dispatched to guard Director Orson Krennic.

History
A legion of Death Troopers specifically act as bodyguards to Orson Krennic. The Death Troopers accompany Director Krennic when he visits Galen Erso to recruit him back to the team building the Death Star. When Erso refuses, Krennic orders the Death Troopers to enter the Erso house to search for Galen's family. Before they can reach the house, however, Erso's wife Lyra approaches and draws a gun. On Krennic's behalf, she is executed by the Death Troopers who also take Galen with them. Although they search for Galen's daughter Jyn, they cannot find her and are forced to leave the planet without her.

Years later, the Death Troopers are dispatched by Krennic to aid the Imperial Stormtroopers in the battle of Scarif. Their deployment turns the battle in favor of the Empire and the rebel forces attacking the Imperial base are annihilated. The Death Troopers who survive the battle are killed when Grand Moff Tarkin fires the Death Star at Scarif, destroying the base and everything around it.

Trivia

 * According to the Us Magazine Collector's Edition - Star Wars Rogue One article Going Rogue, the Death Troopers are comparable to the United States Navy SEALs.