Yogg-Saron is a fictional character from the video game series World of Warcraft, specifically featured in the Wrath of the Lich King expansion. Known as the "Old God," Yogg-Saron embodies chaos and madness, influencing the minds of those around him. He is imprisoned beneath the Ulduar complex, a titan facility designed to contain his malevolent power. As a significant antagonist, Yogg-Saron is associated with the Faceless Ones, a race of creatures that serve him. Players encounter him as a raid boss, where they must confront his dark influence and the horrors he unleashes. Defeating Yogg-Saron is crucial to preventing his return to power.