Dee'em is a Dwemeor (dwarf) arch-mage and architect within the the Gold Digger universe. He is a geek culture reference to the character Dungeon Master from the Dungeon & Dragons cartoon.
Dee'em has been around at least since the end of the Age of Magic when he and other dwemeor artisans built the world's largest golem, Labyrinth. In modern times, he was in Seer's Hamlet where he consulted on Brianna's hybrid condition with other arch-mages. Later on, he helped guide Gina's group through the golem Labyrinth to reach the super-weapon Gigliathon and attempt to remove its beta-technology Giga Engine.