Monkey D. Luffy, dubbed "Straw Hat Luffy," is a pirate captain driven by an unyielding ambition to claim the title of Pirate King, equating it with absolute freedom. Raised in Foosha Village, his childhood was marked by rigorous training under his grandfather Monkey D. Garp and the formative influence of pirate mentor Shanks, who bequeathed him a straw hat as a token of their promise to meet again once Luffy achieved renown. After unintentionally consuming the Gomu Gomu no Mi Devil Fruit, his body gained rubber-like properties, rendering him immune to blunt force but incapable of swimming. The fruit’s latent identity was later uncovered as the Mythical Zoan-type Hito Hito no Mi, Model: Nika, linked to the Sun God Nika and unlocking reality-warping abilities upon awakening. Luffy’s demeanor blends childlike exuberance with tactical acumen, merging fearlessness with selflessness. He instinctively distills complex conflicts to their essence, confronting others’ vulnerabilities with disarming directness. His loyalty to allies and intolerance for betrayal guide his actions, though early impulsiveness gradually matures into calculated resolve. Pivotal influences include his bond with sworn brothers Portgas D. Ace and Sabo—their deaths fueling his determination—and his two-year apprenticeship under Silvers Rayleigh to hone Haki after the trauma of failing to save Ace at Marineford. Leading the Straw Hat Pirates, Luffy assembles his crew through shared aspirations and mutual trust, prioritizing kinship over conventional authority. His leadership evolves from brash daring to tempered judgment, notably choosing strategic withdrawal during the Sabaody Archipelago crisis to safeguard his crew. Post-timeskip, he balances unshakable optimism with heightened strategic foresight, demonstrating resilience in adversity. In *One Piece: Stampede*, Luffy engages in the Pirate Festival, a chaotic contest for Gol D. Roger’s hidden treasure. When the event unveils a scheme to exterminate pirates, he unites rivals against the shared enemy, epitomizing his prioritization of adventure and ally protection. The film underscores his burgeoning role as a catalyst for pirate solidarity, showcasing inventive combat tactics and reinforcing his reputation as a leader challenging systemic oppression. Luffy’s evolution spans conquering personal grief, refining his rubber-based combat via Gear advancements, and awakening his Devil Fruit’s mythic potential. His journey embodies themes of liberation, inherited will, and the interplay between joy and duty, with his elastic fighting style mirroring his adaptability. While retaining his irreverent spirit, trials like Ace’s demise and clashes with entities like the World Government steel his commitment to dismantling entrenched power hierarchies.