The 97th Legion, also known as the Imperial Ninety-Seventh Stormtrooper Legion, functioned as a stormtrooper legion of the Galactic Empire throughout the Galactic Civil War. Stationed on Sullust, the legion's purpose was to suppress the Sullustan resistance and the Cobalt Laborers' Reformation Front. SP-475 served within its ranks, reporting to SP-113. The Siege of Inyusu Tor saw the legion suffer significant casualties when facing the Rebel Alliance's 61st Mobile Infantry.
The debut of the Imperial Ninety-Seventh Stormtrooper Legion was in Battlefront: Twilight Company, a canon novel penned by Alexander Freed in 2015. The 97th Legion card in Star Wars: Unlimited arose from an ambition to craft a distinctive card capable of increasing its strength. The 97th Legion card, in its design, is neither heroic nor villainous, even though the Empire is generally "skewing heavily villain."