Xel'lotath
Xel'lotath emerging victorious.
(voiced by Jennifer Hale and Kim Mai Guest) is one of the three Ancients whose artifacts reside in the Fobidden City during Pious' chapter. Her powers focus on the mind and insanity: her underlings are tinged green, and have an affinity for affecting sanity. A theme among Xel'lotath's servants is that they are headless, as seen with her Trappers and Guardians, or their equivalents to heads are subject to misery, as seen with the hooks on her Horrors' eyelids. Eyes are another theme of Xel'lotath's, with her Horrors, Gatekeepers, and other minions having multiple ones. Xel'lotath has an eel-like lower body, with four slender arms connected to a torso with a large eye in the center. Xel'lotath has two voices due to either a split personality, or simply insanity. The voices alternate during cutscenes, with Hale's voice typically being the dominant one and Guest's speaking in whispers, and speak in unison during spell casting.
Xel'lotath and some of her more powerful underlings have red hands and forearms. It is uncertain if they are covered in blood, if the flesh has been flayed or was never present, or if that is simply how they are colored.
Xel'lotath is depicted as a scholar in Michael Edwards' chapter in the room with bas-reliefs of human representations of the Ancients.
She has dominance over Ulyaoth.