Roronoa Zoro stands as the combatant and master swordsman of the Straw Hat Pirates, serving as the steadfast right-hand man to captain Monkey D. Luffy. He wields three blades simultaneously in his unique Three Sword Style, one being the named sword Wado Ichimonji. This blade, inherited from his deceased childhood friend and distant cousin Kuina, embodies his solemn vow to become the world's greatest swordsman in her honor. Born in the East Blue, Zoro traces his heritage to the Shimotsuki Family of Wano Country, descending from the legendary samurai Shimotsuki Ryuma. His past as a bounty hunter earned him the moniker "Pirate Hunter" before joining the Straw Hats. He became Luffy's first crew member following a rescue from Marine execution in Shell Town. Zoro demonstrates unwavering loyalty to his captain and crew, exemplified by his pledge never to lose again after a crushing defeat by Dracule Mihawk. Zoro possesses a muscular build, cropped green hair, and sports three gold earrings on his left earlobe. His body bears numerous scars, including a prominent diagonal chest wound from Mihawk and self-inflicted ankle scars from an escape attempt. After a two-year timeskip, he gained a scar over his left eye, leaving it permanently closed. His typical attire features a haramaki sash holding his swords, black pants, boots, and a black bandana worn on his arm; he ties this bandana over his head during serious combat. Post-timeskip, he frequently adds an open dark green coat. Confident and impulsive, Zoro projects a stern demeanor and suffers a notoriously poor sense of direction. He adheres to a strict code of honor, rejecting underhanded tactics and refusing to flee battles. He shares a comedic rivalry with crewmate Sanji and prioritizes crew safety, often sensing threats first despite his directional flaws. Rigorous training defines his routine, matched by his high alcohol tolerance. Within *The Giant Mechanical Soldier of Karakuri Castle*, Zoro joins the crew's quest for the Golden Crown on Mecha Island. As the Going Merry approaches, he deflects a barrage of arrows fired by defensive robots. Following the island leader Ratchet's betrayal and seizure of a giant turtle island using his mechanical castle, Zoro confronts Ratchet's subordinate General Maji. Their duel unfolds along a roller coaster track inside the castle, culminating in Maji's defeat. Zoro later coordinates with Sanji and Usopp for a combined attack, enabling Luffy to destroy the mechanical castle and free the turtle. Zoro masters Armament and Observation Haki, possessing latent Conqueror's Haki. His swordsmanship continuously evolves through intense training and combat, developing techniques to project slashing attacks imbued with Haki. Across all adventures, his actions remain driven by his oath to Kuina and his profound loyalty to Luffy.