Captain Crook was McDonaldland’s pirate-themed character associated with the Filet-O-Fish sandwich.
McDonald’s used Captain Crook in advertising as a counterpart to the Hamburglar. While the Hamburglar was linked to hamburgers, Captain Crook’s stories centered on fish and the Filet-O-Fish. His pirate costume and nautical theme gave the sandwich a distinct character within McDonaldland’s larger cast.
The character appeared during the period when McDonald’s was using a broad collection of mascots to market individual menu items and create a connected fictional world. That approach made products easier for children to recognize and gave commercials recurring plots.
Captain Crook is sometimes confused with Mayor McCheese because both wore formal or themed costumes in McDonaldland advertising. They had different roles: Mayor McCheese was a civic character, while Captain Crook was the fish-focused pirate.