The Flame Poison Dragon, also called the Fire Venom Dragon, serves as a high-ranking member of the Demon King’s forces, holding the title of Ten Elder. His command over fire and immunity to its damage define his role as overseer of the Demon Castle’s subterranean magma heating network, a vital system sustaining the fortress’s operations. This responsibility underscores his technical expertise and strategic influence within the hierarchy.

During a clash with the hero Dawner, he fought relentlessly for three days before defeat, later discovering his combat gear had been covertly swapped with non-lethal substitutes by fellow demons. This sabotage sparked internal friction, as allies shifted blame to the castle’s princess to conceal their betrayal.

Tasked with intercepting heroes on another occasion, he missed a critical departure ceremony when the princess disrupted preparatory meetings, exemplifying how her unpredictable behavior frequently complicates his missions. Interactions with peers often reveal strained dynamics fueled by misplaced suspicions and external chaos. A masked visage remains his defining physical trait, setting him apart visually among demon ranks.