Trafalgar D. Water Law hails from Flevance in the North Blue, a town eradicated due to the Amber Lead Syndrome. This fatal disease plagued generations, prompting terrified neighboring countries to exterminate its population. Law alone escaped, hiding amidst the dead. Witnessing the deaths of his parents and sister Lami forged a nihilistic and vengeful core within him. At age ten, he joined the Donquixote Pirates, intending to unleash destruction before his expected death within three years. He received rigorous combat training in swordsmanship, marksmanship, and martial arts from executives Diamante, Gladius, and Lao G. While Doflamingo groomed him as a key officer, Law's encounter with Donquixote Rosinante (Corazon) changed everything. Rosinante, secretly opposing his brother, saved Law by securing the Ope Ope no Mi Devil Fruit, curing his disease. Rosinante died shielding Law from Doflamingo and Vergo, urging him to live freely. This sacrifice became Law's burning motivation for vengeance against Doflamingo. Following Rosinante's death, Law established the Heart Pirates on Swallow Island, recruiting members including Bepo, Shachi, and Penguin. He mastered his Devil Fruit powers, achieving surgical precision with his nodachi "Kikoku." His tactical brilliance earned him the title of Warlord of the Sea during the timeskip by delivering 100 pirate hearts to the World Government, freezing his bounty at 440,000,000 berries. This position facilitated his strategy to dismantle Doflamingo's empire. Law later allied with Monkey D. Luffy on Punk Hazard, proposing to overthrow Kaido in exchange for targeting Doflamingo. This alliance cost him his Warlord status and reinstated his bounty, which surged to 500,000,000 berries after Doflamingo's defeat in Dressrosa. Law played a significant role in the Wano Country arc, where his bounty soared to 3,000,000,000 berries following the defeat of Big Mom alongside Eustass Kid. Law's personality merges calculated pragmatism with buried compassion. Initially cold and ruthless—earning the epithet "Surgeon of Death"—he avoids unnecessary fights but relishes observing chaos. He seldom smiles post-timeskip, reserving smirks for tactical wins or provocations. Though outwardly detached, he retains kindness instilled by Rosinante, reluctantly aiding civilians or allies, like curing poisoned children on Punk Hazard. He adheres to a personal code, refusing undue credit and despising needless killing despite his reputation. As a doctor, he prioritizes saving lives, though he makes lethal exceptions for enemies like Doflamingo. He resists authority and displays competitive pride, especially around Luffy and Kid. His design features tribal "DEATH" tattoos on his fingers, a heart-themed Jolly Roger honoring Rosinante, and his signature spotted fur hat. Post-timeskip attire includes a yellow shirt, black hoodie with fur collar, and a spherical hat. The Ope Ope no Mi grants Law dominion over a spherical "Room," enabling manipulation of matter and space. Within it, he teleports objects, swaps souls, extracts hearts, and performs non-lethal dissections. Advanced techniques include the "Gamma Knife," damaging internal organs, and awakened abilities like "K-Room," bypassing external defenses to strike internally. Combined with his swordsmanship and marksmanship, these powers make him a formidable fighter. His medical expertise allows innovative Devil Fruit applications, such as self-curing Amber Lead or creating antidotes. In the film *One Piece: Stampede*, Law participates in the Pirate Expo, aligning with Luffy and rivals against Douglas Bullet. He wears black pants, a yellow top, and his fur-trimmed coat. The Heart Pirates assist using their submarine Polar Tang. The film reinforces Law's role as a strategic ally and his tolerance for temporary teamwork against greater threats, consistent with his main series portrayal. After Wano, Law confronted Blackbeard near Winner Island. Despite using awakened Devil Fruit abilities, he was defeated and his crew captured. Bepo saved him using Chopper's Sulong-inducing medicine, enabling their escape. Law's current whereabouts are unknown, but his survival and possession of Road Poneglyph transcripts suggest potential future involvement in conflicts against Blackbeard or the World Government.