The title of the investigators of the Ferengi Commerce Authority, feared officials who audit, fine and ruin Ferengi who break the law, the best known being Quark's enemy Brunt.
A Liquidator is an agent of the Ferengi Commerce Authority, the body that polices Ferengi business practice and tradition. Liquidators can inspect accounts, seize assets and revoke a business licence, and Ferengi dread a visit from one.
The title belongs above all to Brunt, played by Jeffrey Combs, who first appears in the Deep Space Nine episode Family Business. He pursues Quark again in Bar Association, when the bar's staff form a union, and in Body Parts, where he buys Quark's remains in advance and then strips him of everything for breaking the contract.
Brunt is briefly dismissed after his scheme against Grand Nagus Zek fails in Ferengi Love Songs, but he goes on plotting to become Nagus himself in Profit and Lace and The Dogs of War.