Heckler holds the rank of lieutenant within the 2nd Special Fire Force Company, a disciplined military unit affiliated with the Tokyo Army. The company specializes in confronting Infernals—humans transformed into fiery entities—and analyzing cases of Spontaneous Human Combustion. Stationed at Special Fire Base 2, its members train rigorously for emergencies and compete in events like the Rookie Fire Soldier Games to hone combat and response skills. While leading an underground mission, Heckler faced unexpected interference from Arthur Boyle, a member of rival Company 8, whose actions jeopardized the operation. Drawing on a countermeasures manual authored by Shinra Kusakabe, Heckler adjusted tactics mid-mission, successfully redirecting Arthur’s focus toward mission objectives. The incident underscored Heckler’s ability to balance protocol with improvisation during high-stakes scenarios. Discrepancies exist regarding his rank: some sources identify Heckler as Company 2’s captain, conflicting with references naming Gustav Honda in that role. No additional personal history, prior missions, or expanded character arcs are documented in the provided material.