Douglas Bullet, the Demon Heir, emerged from the ashes of war-torn Galzburg, abandoned at birth and forged into a weapon by the Galzforce military. Among soldiers stripped of individuality and branded "Douglas," he carved his identity as "Bullet" through relentless combat. By nine, battlefield prowess earned him multiple Medals, marking him as Galzburg’s deadliest soldier. At thirteen, he consumed the Gasha Gasha no Mi, a Paramecia Devil Fruit granting dominion over inanimate matter—disassembling and reconstructing it at will. Harnessing this power, he nearly halted Galzburg’s endless war by fourteen, only to be betrayed by fearful superiors. His retribution annihilated both Galzforce and the nation, drawing the World Government’s gaze and propelling him into piracy. In his mid-teens, Bullet crossed paths with Gol D. Roger, challenging the legendary pirate repeatedly but falling each time. Compelled by respect for Roger’s strength, he joined the crew, yet grew contemptuous of their camaraderie, deeming it a liability. He departed after Roger’s terminal diagnosis, and following the king’s execution, unleashed devastation until captured by Sengoku and Garp. Confined in Impel Down for two decades, he escaped during Teach’s breakout, though the wary warlord left him unchained. Driven by a philosophy of absolute self-reliance and strength forged in betrayal and bloodshed, Bullet spurned alliances, clashing with Roger’s ideals. His sole pursuit became claiming the Pirate King title by crushing the world’s strongest, including the Four Emperors and Worst Generation. At the Pirates Festival, he colluded with Buena Festa, baiting rivals with a fabricated quest for Roger’s treasure—an Eternal Pose to Laugh Tale. Unleashing his awakened Devil Fruit, he reshaped landscapes and warships into a titanic mechanical exoskeleton, overwhelming foes. Even the combined might of the Worst Generation faltered against his Supreme King Haki, Armament mastery, and Rokushiki techniques. Victory slipped only when pirates, Marines, and revolutionaries united, with Luffy’s Gear Fourth striking the decisive blow. Post-defeat, his fate lingers in shadow, hints pointing to renewed captivity in Impel Down. His legacy endures: a storm of destruction, mechanical ingenuity, and the unyielding creed that strength alone commands destiny.