Monkey D. Luffy, widely called "Straw Hat Luffy," captains the Straw Hat Pirates with the goal of finding the legendary treasure One Piece and becoming Pirate King—a title symbolizing ultimate freedom. Born in Foosha Village on Dawn Island to Revolutionary Army leader Monkey D. Dragon and an unnamed mother, he is the grandson of Marine vice-admiral Monkey D. Garp. As a member of the enigmatic Clan of D, Luffy endured survival training under Garp and mountain bandit Curly Dadan. In childhood, Luffy idolized the pirate "Red-Haired" Shanks. At age six, he stabbed himself below his left eye to prove his resilience. After accidentally eating the Gum-Gum Fruit—later revealed as the Human-Human Fruit, Model: Nika—Luffy gained rubber-like physiology but lost the ability to swim. Shanks sacrificed his left arm to save Luffy from a Sea King, inspiring Luffy's piracy dreams. Shanks entrusted Luffy with his straw hat, vowing to reunite once Luffy became a great pirate. Under Dadan’s care, Luffy forged sworn brotherhoods with Portgas D. Ace and Sabo. The trio exchanged sake cups, pledging to become pirates. Sabo’s apparent death at the hands of a World Noble devastated Luffy and Ace. When Ace sailed at 17, Luffy trained another year before launching his piracy career at 17, pledging to recruit ten crewmembers. Luffy displays a carefree, optimistic nature with immense resilience and a huge appetite. He shows unshakeable loyalty, risking his life for allies. His simple thinking bypasses complexity, yet he intuitively senses others’ cowardice or hypocrisy. He despises betrayal, helplessness, and declarations of "impossible" goals. After Ace’s death at Marineford, grief and doubt overwhelmed Luffy until Jinbe and Rayleigh’s guidance restored his resolve, prompting two years of rigorous training. His rubber body resists blunt force and electricity but remains vulnerable to piercing attacks. Combat techniques like Gum-Gum Pistol and elastic "Gear" transformations leverage his physiology. Upon awakening his Devil Fruit in Wano Country, Luffy gained heightened flexibility and creative combat prowess, with some heralding him as the Sun God Nika’s reincarnation. Post-timeskip, he wears a red open-chested cardigan—revealing an X-shaped scar from Admiral Akainu—and a yellow sash, echoing Gol D. Roger’s style. In *One Piece: Stampede*, Luffy joins the Pirate Festival on Delta Island, orchestrated by Buena Festa. The event becomes a hunt for Gol D. Roger’s treasure on a floating island. Luffy allies with Trafalgar Law, Sabo, and former rivals Crocodile and Rob Lucci against Douglas Bullet, a former Roger crewmate. Bullet merges warships and structures into a colossal construct using his awakened Clank-Clank Fruit. After a massive battle involving pirates and Marines, Luffy defeats Bullet with Gear Fourth. He destroys Bullet’s Eternal Pose to Laugh Tale, rejecting shortcuts and affirming his commitment to earning One Piece through his own journey. During the fight, Luffy coordinates with allies: Sabo creates a fire wall for the pirates’ escape, while Usopp’s sniping weakens Bullet’s construct. His rejection of the Eternal Pose underscores his dedication to achieving the Pirate King title through adventure and self-reliance.