Little Boy is a villainous operative within the Machiner Platoon, a unit of cybernetically enhanced soldiers, and serves as the sidekick to Major Fatman. He appears during the conflict surrounding Noah's Ark, taking part in the assault on ARCAM Corporation's Turkish research center, where he single-handedly kills numerous ARCAM soldiers. His background as a cyborg soldier is typical of the Machiner Platoon, which relies on extensive body modification to create efficient killing machines. Little Boy is characterized by incredible speed and unbridled ruthlessness. He is described as the perfect partner for Fatman in carrying out atrocities, showing no hesitation or mercy in combat. His only known fear is of the Spriggan, the elite ARCAM agents he is tasked with fighting. His motivations are not deeply explored; he acts as a loyal enforcer for the platoon, carrying out orders without apparent personal agenda. His primary function is that of an antagonist during the Noah's Ark story arc, where he poses a direct threat to the protagonists. His most notable relationship is with Fatman, whom he supports in battle as a sidekick. He also has a key adversarial relationship with the Spriggan agent Jean Jacquemonde, who ultimately kills him. Little Boy does not undergo significant character development; he remains a static and ruthless killer until his death. His notable abilities stem from his cybernetic enhancements. He has molecule-thin wire cutters embedded in his fingers, which he uses like razor floss to slice through enemy soldiers with ease, leaving dismembered bodies in his wake. He also carries an arm-mounted weapon that deploys fiber wires, and he wears an Omihalcon-powered suit similar to Fatman's, which enhances his combat capabilities. His fighting style relies on speed and the deadly precision of his wire weapons, making him a formidable but ultimately disposable agent.