Captain Crook was a pirate character in McDonald's advertising.
He belonged to the McDonaldland cast and was associated with Filet-O-Fish sandwiches. His design used familiar pirate imagery, including a captain's outfit and seafaring manner, to give a menu item its own memorable character.
Captain Crook was often presented as a rival to the friendly McDonaldland characters. This placed him in the same playful story tradition as the Hamburglar, although his defining theme was piracy rather than hamburger theft.
The character is sometimes confused with the Hamburglar because both were mischievous figures in the same advertising universe. Captain Crook's specific branding connection was seafood, while the Hamburglar's was hamburgers.