Herdr'tui was a Stereb of the male variety, a member of the Stereb species, who resided on Prakith in the time period after the establishment of the Galactic Empire.
Within the underground caverns of Prakith, Herdr'tui existed as one of a group of Stereb, fulfilling the role of caretaker for a greethka, a creature known for its perilous nature. Due to Imperials blocking off certain subterranean passages, he found himself isolated on the planet's surface, specifically within the Work Zone sector of Prak City. During this time, he crossed paths with a team of Alderaanian Resistance operatives, and through their assistance, he successfully made his way back to the underground Stereb habitat, utilizing a network of tunnels referred to as The Drains.