Earll was a human female who served in the military of the Galactic Empire. By the fifteenth year of the Age of the Empire, she held the rank of commander. Around that time, Earll receptioned a distress call sent by Nadea Tural of the Imperial Senate, but it transpired that the senator had already been rescued by a group of anti-Empire insurgents from Lothal. Along with a squad of stormtroopers, Earll boarded the rebels' ship, the Ghost, and ordered the immediate execution of its crew. Senator Tural, who had demanded a fair trial for the rebels, interposed herself when Earll's troopers were about to fire, allowing the Spectres to get the upper hand. The Imperial commander herself was shot and stunned by Hera Syndulla, the captain of the Ghost.