In the animated film Lupin III: The Legend of the Gold of Babylon, Chin is a supporting character who works as a henchman for the mafia, serving under a superior named Kowalski within the Marciano crime family. He is a man of Chinese-American ethnicity, characterized by his brown hair and black eyes. Chin forms a notable partnership with a fellow henchman named Willy, and together they are frequently tasked with carrying out plans to capture or eliminate the master thief Lupin III.

Chin's personality stands in stark contrast to that of his boss, Kowalski. Where Kowalski might exhibit more competence, Chin is depicted as being incredibly mindless and remarkably prone to causing accidents and experiencing failure. Despite these significant flaws, his partner Willy describes him as being always prepared, suggesting a level of readiness that his actions rarely reflect. Chin is defined by a singular and unwavering fixation, which is the assassination of Lupin III. This dedication is his primary driving force, and his dialogue throughout the film is extremely limited, with the vast majority of his spoken lines consisting of the simple, repetitive phrase, "me kill Lupin". This single-mindedness, combined with his incompetence, defines his role in the story as a persistent but largely ineffectual obstacle for the protagonist. There is no significant character development or notable abilities beyond his dogged determination and the equipment he might carry as a mafia operative. His key relationships are strictly professional, linked only to his employer Kowalski and his partner in crime, Willy.