Heiss is the main antagonist of the Nintendo DS RPG Radiant Historia, being the primary antagonist in both of the game's timelines. He's in charge of Alistel Forces' Special Intelligence Division and is the superior of Stocke, the main protagonist. Heiss was the unknown wielder of the Black Chronicle, forcing him to maintain a low profile and use the book to alter events in history to meet his desires. He was also manipulating in secret the heads of the continent's main cities: Alistel and Granorg; namely High Colonel Dias, Count Selvan, Queen Protea and General Hugo.