His Vengeance trilogy (Sympathy for Mr. Vengeance, Oldboy, Lady Vengeance) are masterworks that deconstruct revenge psychology, consequences, and moral ambiguity.

He consistently crafts narratives centered on righteous vengeance and cathartic violence, from Kill Bill to Inglourious Basterds, celebrating the act of retribution.

His spaghetti westerns, especially the Dollars trilogy, elevated revenge into operatic myth, exploring the code of vengeance and the cost of retribution in the Old West.