A human thief who led a party consisting of Agathe Helermann, Berthold Menckenberg, and Meinhardtus "Mein" Menckenberg. Together they recruited Ravendil Shadowstar, and through Ravendil, Martin Aulenbach to accompany them on a quest to a forgotten elven ruin within the Reikwald Forest. Within the ruin supposedly lay a forgotten elven armory to which Hart was in possession of a map. Upon arrival what was revealed was that this armory was really the Elven Warpstone Prison and Hart was actually a mutant in service to a dark master. He attempted to enslave the party with dark sorceries, but his will was not strong enough. He was put down with arrows by Ravendil.
A later trip to the site by the heroes, in the company of Templars of Sigmar, revealed the Elven Warpstone Prison was buried beneath a freak mudslide. Hart, however, had risen again, and served now as its protector in the form of a twisted Chaos Spawn, who was being coralled by Skaven. The heroes put down the Skaven, as well as a traitorous Templar who served them, before putting down Hart once and for all. His body commited to the cleansing flames of Sigmar.