James Black spearheads FBI operations against Japan’s Karasuma Group, leveraging his transnational upbringing in London’s Marylebone district and Chicago to craft cross-cultural strategies. A naturalized U.S. citizen, he first crossed paths with Conan Edogawa during a hostage crisis at an animal show, where the young investigator’s decisive actions earned James’s respect and the affectionate nickname “Cool Guy,” solidifying their alliance. Commanding FBI efforts in Japan, he delegates effectively to agents like Jodie Starling and Shuichi Akai, trusting their expertise while orchestrating covert maneuvers—including concealing Akai’s faked death. Though rational and unflappable, he subtly shields colleagues’ vulnerabilities, such as cautioning Andre Camel to avoid topics tied to Jodie’s past. His career spans pivotal arcs—Vermouth, Kir, Bourbon, Rum—and high-stakes cases from kidnappings to clashes with the Black Organization, notably during the Episode 425 showdown and the Scarlet Bullet incident. There, he linked a WSG sporting event kidnapping to a 15-year-old Boston case, showcasing his analytical precision. Observant of details others overlook, he correctly identified Masumi Sera’s gender, suggesting familiarity with Akai’s family history. Inspired by namesakes James Bond and Moriarty, his persona blends espionage savvy with strategic rivalry. Over time, his blond hair transitioned to silver, and his white Mercedes-Benz CLK320 became a recurring fixture. Across 41 manga chapters, 31 anime episodes, and 5 films like *The Scarlet Bullet*—where he mobilized FBI resources during a maglev train crisis—he balances institutional coordination with discreet action. Professional yet mission-aligned bonds define his ties to Conan and the team, punctuated by offhand references to his admiration for Lupin III’s Fujiko Mine.