Gestal Gestal , also known as Lord Divergence , is a demon thrall , or priest , of the demon lord Demogorgon . As the lord of Divergence , he is the first servant of the Prince of Demons and is the self - proclaimed ruler of the area of the Underdark known as the Depths of Madness . Personality . Gestal appears to have . His other known personality is an innocent young man who calls himself Liet Sagrin , who is unaware of Gestal ’ s existence , though Gestal knows of his . Gestal claims his own personality is the original personality , and he uses this to his advantage , for he is aware of all of Liet ’ s memories and uses Liet as a lure to find a suitable female companion to rule the Depths by his side . Gestal has rather perverse tastes , using candles of human fat and kneeling on blankets of skin when he prays to Demogorgon — demanding power from the demon prince rather than begging , since Demogorgon would give nothing to the weak . His private chamber is filled with a horrid reek , and adorning the walls are murals painted in blood , excrement , offal , and other foul substances depicting human and snakelike figures engaging obscene and depraved activities . Liet Sagrin . Liet Sagrin is an innocent , boyish , and kindhearted young man of about twenty - eight years who claims he is from Harrowdale . He is shy around women and in some ways , it seems as if he were teenager trapped in a man ’ s body . Physical description . Liet is a handsome young man of about twenty - eight years . He has mismatched eyes — one green , the other gray - blue — and sandy , wavy hair , although he is not very muscular . The skin on both his arms is gray and puckered , which Liet is embarrassed about and keeps covered with the sleeves of his tunic . Whereas Liet wears a dirty tunic , Gestal cloaks himself in tattered gray robes covered in filth , with madness seeming to bleed from the gaps of his robe . The flesh from his shoulders down to his wrists is black and scaly and crisscrossed with grotesque scars . When Gestal is in control of his body , he can use a demonflesh spell , causing the inky blackness and putrid sores to spread across his skin except for the right side of face , for a brand depicting a two - headed snake wrapped around a serrated blade appears on his right cheek . Background . Gestal is the highest - ranking servant of the demon lord Demogorgon , and he had decided to rule over the Depths of Madness for the sole purpose of finding a female companion and lover , for the glory of Demogorgon . To this end , he uses the alternate personality of Liet Sagrin to gain the love of his intended female target — though whether Liet ’ s personality was intentionally created through magical means or merely a product of a mental disorder is unknown . Throughout the Depths , tribes of demon - blooded lizardfolk living in filthy warrens serve Gestal , but Gestal ’ s most prized and faithful servant is a physically altered troll named Tlork . Gestal can telepathically speak to Tlork , giving him commands . Another of Gestal ’ s servants is a female halfling named Daltyrex Blacksoul , also called Slip . She serves Gestal by infiltrating herself into a party of adventurers , as Gestal does with Liet , and leads them to their deaths . Gestal can also see through Daltyrex ’ s eyes while Liet is awake . Gestal ’ s principal enemy is a sharn called Ruukthalmuramaxamin that dwells in the ruined Netherese city of Negarath within the Depths . Events in " Depths of Madness " . Gestal finally found a perfect potential female companion when the moon elf who calls herself the Fox - at - Twilight entered the Depths with a band of her fellow adventurers . Her band was ambushed by Gestal ’ s fiendish lizards , and she awakened in a dungeon with other prisoners , including Liet and Slip , with her memory wiped of the recent events . The prisoners united in a group to escape the Depths , unknowingly being tested and toyed with by Gestal and Daltyrex . Twilight and Liet fell in love as Gestal had planned , but when Gestal revealed himself to Twilight , she refused to join him . Later , Gestal , weakened , desiccated , and already near death after being hit by a powerful spell that had just been cast by Ruukthalmuramaxamin , was finally killed by Twilight as she ran him through with a dagger , though she never stopped loving Liet . Appearances . Gestal is the primary antagonist in " Depths of Madness " .