Marble was a sorcerer also known as the Malefic. He was a priest of Shadow in Capustan. Marble described himself as "second only to Rath'Shadowthrone himself! ... feared among all the cowering citizens of Capustan! A sorceror of powers unimagined!" Others were less charitable and described him as "a tall, gaunt, black-robed man"; "stumbling, half hopping like a huge ebon-winged vulture".
Amidst the Siege of Capustan, Buke came upon Marble hastily retreating from the estate of Bauchelain and Korbal Broach. The angry priest vowed revenge on the necromancers, claiming he had been rebuffed with a boot to the backside. He promised that his master would respond to the insult delivered to his most valuable servant before storming off.