LS-757, or L-S-Seven-Five-Seven, was a male Imperial stormtrooper who was stationed in Sector 5-1-5 on the planet Lothal during the Rebel Alliance's attack on Lothal.
LS-757 was an Imperial stormtrooper who was assigned to guard a hatch in Sector 5-1-5 on the planet Lothal. During an attack on the planet, LS-757 went to apprehend Rebel Alliance pilot Mart Mattin, but was choked unconscious by Mattin. Later, LS-757 was stationed aboard the Chimaera before it jumped through hyperspace to the planet Peridea.
Around 9 ABY, Ahsoka Tano, Ezra Bridger and Sabine Wren tried to escape from Peridea on the Chimaera before it jumped into hyperspace. LS-757 stood in the hangar bay alongside another Night Trooper. As the ship departed, Bridger and Wren both used a force trick which allowed Bridger to get onto the ship. As Bridger killed the other Night Trooper, LS-757 tried to fire at Bridger, but was gunned down by Wren.