The Mortar Stormtrooper was a specialized variant of stormtrooper that specialized in mortar weaponry. The stormtrooper was equipped with stormtrooper armor, albeit with yellow markings, a yellow pauldron, and a military backpack. The style and position of the yellow markings on the Mortar Stormtrooper were identical to the red markings of the incinerator troopers deployed by the Imperial remnant led by Moff Gideon.