A phantom thief shrouded in mystery, their gender, age, and nationality unknown, operates by a strict code that elevates artistry and principled theft above personal gain. Globetrotting aboard the airship *Troubadour*, they are accompanied by two loyal aides: Joker, a human accomplice, and RD, an artificial intelligence. Their targets are culturally significant artifacts, often stolen to rectify historical wrongs—such as reclaiming the gemstone *Rose of Linden* (originally *Nefertiti’s Smile*) from a wealthy businessman to restore it to Egypt.

A master of adaptability, they thrive on challenges posed by rivals like the enigmatic circus troupe White Face, whose theft of the *Rose of Linden* sparked a high-stakes game of wits. Outmaneuvering the troupe’s hypnotists, magicians, and acrobats, they blend strategic brilliance with theatrical flair. Yet, after victory, they ally with White Face, aiding his quest to bring the circus to a war-torn homeland tied to his past—a gesture revealing unexpected empathy.

Their dance with authorities like Inspector Kamikoshi weaves a complex cat-and-mouse narrative, where criminality and moral justice often intertwine. No media—novels, the 2022 theatrical OVA, or the 2025 film—betrays their origins or true identity. Narratives chart their escalating heists, shifting alliances, and clashes of ideology, preserving their mystique. Deliberately stripped of explicit backstory, the character embodies elusive intrigue—a shadow defined by audacious deeds, unwavering principles, and the enigma they leave in their wake.